My recent blog post on adapting lace edgings from published sources containing studio punchcards patterns led me back to reviewing a blog post from 2013 that included a hand technique and an automated pattern.
Since then I have moved beyond mylar sheets on the 910 or using punchcards. The present swatches are knit on a 930 using img2track. The pattern images and corresponding direction of transfers, in this case, occur on the purl side, therefore lace motifs need to be reversed either in the original image processing prior to download, or after download by remembering to use the mirror button to reverse the image horizontally, which is an episodic forgotten detail on my part. Adjustments in the horizontal repeats as charted here may need to be made depending on the other KM models as well.
Prior to my using Excel and now Numbers to produce my design charts, images such as this one were created using Intwined, a software program that became quickly unsupported, buggy, and then with no updates for use on Mac. It has long since been abandoned by me.
The first revisited repeat 
edited for automation on the 930 
The lace carriage makes 4 passes, followed by 2 rows knit. The arrangement at the end of each transfer sequence will have pairs of double stitches moved onto the adjacent needles, leaving 2 empty needles in between them. Placement on the needle bed should be planned, added “border” stitches can be moved away and toward the starting number of stitches to keep eyelets forming at the side edges for all over uniformity
the end result will produce 2 pairs of doubled stitches achieved by the repeated transfers with 2 empty needles between each pair where loops and floats will form. Their locations alternate as each sequence is completed
Blank rows between transfer segments are there to make certain the knit rows will happen in the proper locations at the top of each transfer sequence. The first design row transfers are to the left, the transfers to the left begin on design row 8.
LCOR ready for the first tow of transfers to the left 
LCOL ready to make transfers to the right 
after the transfers single needles are empty, with double stitches in adjacent ones, transfers to the left are repeated once more, this is the result, with transfer needles pushed out to show doubled up stitches 
After all the sequence transfers are completed, there will be adjacent pairs of doubled up stitches with 2 empty needles between each pair. As the following 2 rows are knit, the first row creates loops in the empty needles, the second pass skips those needles, forming a “float”. Looking a bit closer after the knit rows
as the process repeats, the first transfer 
the second transfer
The pairs of stitches that have been moved anchor the 2 side by side loops and result in the 3 strand stitch pairs, with every other remaining pair of needles empty between them. The LC returns to the left with no needle selection 
Knit 2 rows, continue in pattern.
Adjusting the tension will make for a tighter knit, I decreased it by a full number halfway up the swatch below. There is one “operator error” where I attempted to correct a dropped stitch. This fabric is composed of myriad double stitch transfers in both directions and definitely a challenge to produce in any significant size. Making those transfers by hand may wind up being the solution if yarns and automation refuse to work properly. 
Those short “floats” at the top and bottom of the eyelets can be reduced. This adds a hand technique to every opening, whether results are worth it becomes a personal decision. 
After the 2 knit rows use a tool to lift the float onto the needles holding the side by side loops 
Before the 2 knit rows, there will be the doubled up loops in each of those needles, and the 2 doubles up stitches made from the transfers are added to them as transfers continue. For all those strands to knit off properly, the whole row might best be brought out to E position before using the knit carriage. The differences in the hooked up float version of the pattern and the let it be one are shown in areas below the lines in the bottom corners and by arrows in the close-up 
Much easier and quicker to knit, though quite different, is large mesh combined with tuck stitches 
This chart was used in 2013 as a guide for hand technique using a 2/8 wool 
Knitting lace sequences in a single orientation produces a mesh that is biased. It could be the start for one more chevron shape but was not the intended fabric.
The adapted repeat: the odd number of passes between each repeating segment ensures that the following selections reverse the direction of the transfers
the proper orientation for use on the 930
Working out the actions in a spreadsheet, border stitches outside the fabric width may be added and subtracted to keep mesh formation along both side edges.
Needles preselected for transfer to the left 
during transfer, needles are preselected for transfer to the right. Doubled up stitches will now be moved 
during transfer, needles are preselected for transfer to the left. Doubled up stitches will now be moved 
during transfer, needles are preselected for transfer to the right. Doubled up stitches will now be moved
during transfer, no needles are preselected. Doubled up stitches will now be moved, resulting in doubled up stitches on every other needle.
Pairs of knit rows follow each of these sequences.
A repeat that produces a smaller mesh with the swing right to left is found in other posts and references. Below part of a published punchcard is shown, with the resulting swatch, and in turn, compared with the large scale version of the same mesh structure knit on the same number of stitches 
Category: Lace
Lace edgings on Brother machines- automated with slip stitch 2
Recently I have begun to look at lace edgings in a slightly different manner than in the past. I am looking back at my post from 2018, written while using the older version of Ayab software and working on a 910, and another including an edging written this month. Of late, most of my proof of concept swatches have been knit on a 930 using img2track for downloads.
I am using a punchcard machine knit carriage with an added magnet as my knit carriage (KC). Adding needle selection to one side of the 910 electronic LC eliminated issues I had previously encountered with some inaccurate needle selections. The arrows indicate the direction of the adjustable slots in the mechanisms.
The 910 LC is also missing its magnet (left), gluing on a magnet in the position shown below made it usable again on the electronic again.
The direction of the repeat matters, its programming may vary with KM models or the software used to download them. These instructions are intended for holding to happen in 2-row sequences to and from the right, and for the eyelets at the outer circumference of the pie shape to occur on the right of the purl side as you knit (B). If those same eyelets occur on the left (A), the repeat needs to be mirrored horizontally. 
Reworking some of the former swatches in no particular order, beginning with this one:
The 2018 repeat is charted on the left, the amended 24 stitches wide repeat is in the center, and the mirrored image for download to my 930 is on the right. 
Although I am attempting to have the trims in this post no wider than 24 stitches, the design repeats shown for use on electronic machines are not suitable punched as they are for use on a punchcard kms. One of the critical differences when using 2 carriages to select patterns, is that with the electronics on machines such as the 910 or 930 each carriage pass advances the design repeat one row. When using punchcard models, the LC begins selection begins from the left, the carriages do not advance the punchcards on their first pass from the opposite side once the carriage in use is returned to its original position.
Having the repeat 24 stitch width allows for positioning the knitting other than on the very center of the machine following the markings on any 4.5 mm punchcard machine needle tape. If this is done in electronics, the design should then be programmed for all over patterning, not for single-motif.
Splitting the bottom 2 all black row of pixels/punched holes and moving the one row to the very top of the design is another of the new changes.
I prefer to plot out these repeats at the start of the decreasing angle. The first row then sets up the needle bed preselection on the widest stitch count of the pattern. The original repeat was charted using Numbers and scaled in Gimp to produce a downloadable file. The method as it was worked out in chart form, and symbols used
The resulting, more successful swatch 
2018 failed attempt at a continuous pattern
Charting it out anew: on the right is the amended repeat adding 4 more rows to the top of the original
The resulting swatches:
A= the LC switched to fine lace “accidentally” for a few rows.
B= on the very edge eyelets are single on decreasing angles, double on increasing ones.
C=Though the very edge has those differences, the number of knit stitches between the inner shape on the left and the outer one on the right is fixed.
D= the lines created by the transfer sequences to create the diamond shapes are far more successful.
These charts illustrate the above repeat on the left. On the right, the edge transfers are imagined reduced to single eyelets on the increasing angle. In turn they would result in a wider area of knitting in the zigzag shape between the curved edge and the diamond shape. Another possible solution follows, using expanded graphs with extra LC passes 
“A Machine Knitter’s Guide to Creating Fabrics” by Susanna Lewis (1981) is the ultimate resource for punchcard knitting for knitters with any amount of experience. On page 223 she offers a repeat for a lace trim. It is shown on the left below, after being reorganized to start on the full 24 stitch width row of the edging. In the center chart, rows of black pixels are added, and on the right, the full electronic repeat is shown mirrored for download to the 930 
2818, a 26 stitches wide swatch
2020, 24 stitch version
The curved edge is noticeably different and more uniform than in edgings where the increasing angle is formed only by a single stitch being transferred to the next needle on the left, creating an eyelet immediately to its right.
The above design, as well as the Brother one published and shared at the bottom of the 2018 post, add two more passes of the LC for stepped decrease/ increase shaping. Three needle positions are involved in each sequence. The decreasing angle will have a single edge stitch, followed by a right-hand transfer with 2 stitches on that needle, and an eyelet to their right after the four LC passes are completed. The increasing angle will be formed by two single edge stitches with an eyelet to their right as well after those four LC passes are completed. 
Moving on to the Brother published chart at the bottom of the 2018 post: the original is on the left, readjusted for planning to begin with the decreasing curve in the center, and charted for download on the right (mirrored in turn for use on the 930). The original was said to be 68 rows high but proved to be 72. It is also 18 stitches at the widest point, not 24. I did not follow the publication’s directions for alternating between fine and normal lace either, simply left the LC set to N.
The test swatch
A fellow Ravelry member reminded me of Tessa Lorant’s lace publications. I had forgotten I actually owned this single one from 1981.
Upon examining it, I rediscovered her patterns, many for hand knitting with accompanying written row by row instructions and charts, others at the back of the pub, with punchcard machine repeats.
The 24 stitch card designs provided were for use on Knitmaster/Studio 260 and 360 machines. The repeats are typical of lace often referred to as “simple”, a specialty of carriages that are capable of transferring and knitting in single carriage passes. For some ways to use such cards on Brother models please see post, or search subsequent shares.
The increases and decreases are achieved through row tracking and hand manipulation. Many of the edgings pictured are very open, and the suggestion is made that they be starched. Using different yarns and working in trims that contain more stocking stitches in their body make for more practical use nowadays.
Transfers are made in the same direction, which may factor into the results biasing. The edges in some, in addition, are shaped with multiple increases and decreases. If knitting long strips, a small piece of scrap yarn with weight on it may help keep the cast on stitches knitting and transferring properly.
I am not sharing any of her published directions, only providing ideas for analyzing and converting some of the punchcard repeats.
The first is from page 48, marked up for identifying transfers to the right (later decreases, magenta line), and transfers to the left (later increases, cyan line). A template with solid black pairs of rows to indicate slip stitch knitting sequences is a good place to start and can be expanded to suit the repeat. The yellow squares on the right indicate a beginning plan for increases and decreases. They and black squares to their left would be eliminated from the final design. 
Working one chart through to knitting: the bottom left image shows part of the original card. Magenta squares indicate transfers to the right and cyan ones to the left. The straight edge border with the larger number of eyelets was a bit fiddly to knit, so the second option is also offered and tested.
The repeats were mirrored for actual knitting on my 930
I knit to the left after all the needles were preselected at the end of the decreases and then cast on over the empty needles on the left, bringing them out to hold so they would be knit for the second row as the knit carriage returned to the right side. A garter carriage weight seemed to be enough to help anchor down the newly formed stitches during subsequent transfers. 
Making a pattern design more one’s own: part of the original design from p. 52, split so the pattern may begin on the widest part of the repeat, punchcard “holes” marked for left and right transfers
Here it was charted out in Numbers with the intent to produce the 2 stitches stitch edge along the outer curve and a less open one on the straight vertical side 
This sort of knitting can be a bit fiddly. I believe if I were to produce any such trims in great lengths and had the option, I would choose to dedicate a punchcard KM to the project so it would be easier to step away from and return to it as the spirit moved me.
If any loops are formed (A) and rows are not unraveled to correct the situation, it is best not to tug hard with the work on the machine. Stitch sizes on several needles may be altered, and the movement of the pairs of eyelets may become distorted. Because the knit carriage must be moved to the far right to be disengaged from the belt, this will tend to pull down extra yarn from the tension mast. A very gentle tug at the start of the first knit row should keep loops from forming.
The condition of the latches and needles is important. In stocking stitch knitting one of the signs of a “bad needle” is stitches tucking repeatedly on a needle that is not intended to be patterning in any way. The stitch in the hook is joined by a loop that does not knit off properly. It helps to start in a light color and a “friendly” yarn. Clearly identifiable stitch formation helps to develop an understanding of its structure. Eyeing the row of transfers upon their completion helps pick up improperly transferred or dropped stitches, saves runs that result if the latter go unnoticed before continuing to knit. At times there may appear to be a needle problem with a loop sitting over a needle or a dropped stitch and attempts to form “properly” knit stitches in transfer rows will create simple stockinette. Eyelets will not form properly, and stitches will want to get longer and not maintain their shapes. B and C point to the resulting differences in structures. 
The last Tessa sample, from page 60, brings up the topic of large eyelet lace, also revisited in a recent post. I thought the 24-stitch repeat too narrow, I expanded it to 32 and added eyelets on the straight edge.
I began by splitting the card in order to begin the pattern at its widest point and decreased the number of eyelets in the shapes to allow for automatic shaping. In these punchcards, rows with no transfers are part of the program, are free of any holes. Black pixels are used to program slip stitch all knit rows.
More transitions in planning:
two of the rejected swatches 
Consideration needs to be made in terms of whether some small ladders are a design element or not, hooking up “floats” helps reduce or eliminate them on decreasing angles on both sides of the shape, but the resulting eyelets appear a bit larger and different than the rest.
When at first I attempted 2 single eyelets following each other at the intersection of the shaps I needed to cast on after a single float was created between the center needles and followed by the first all knit row from right to left. That turned out to be unnecessary in the final swatch with the number of eyelets increases immediately after the single one in the final repeat. Using it will place a transfer left and a transfer right, holding down the loops in the 2 hooks affected on the second knit pass to the right. Leaving the bottom float alone echoes the remaining fabric.
The image on the left illustrates the result of not casting on on that center eyelet if it is to be repeated. The other photos show picking up floats and hooking them up in needles not receiving any transfers. 
The Tessa trims are knit in fine yarns. This shows a portion the inspiration large eyelet trim, note the appearance of the space between the two center eyelets is different
My version with the floats hooked up and onto the needles with no multiple stitches already on them at the center eyelet as the pattern shifts:
Sometimes less is more, here extra hookups are not used, making the trim quicker and easier to knit. At this point, I am experiencing sticky latches, not improved by light oiling, likely to be fatigued from constant use of the center 24 stitches. The needles do not look obviously in need of replacement. One alternative is to swap and shift the center 24 needles to a less used part of the needle bed.
Another image of the Tessa sample in repeat followed by my own test swatch 
At the top of the piece I did have to deal with closing the eyelets to facilitate 2 knit rows and binding off. I prefer to work from left to right, dealing with the right side of the loops first: drop loop on the right side, use a tool to enter the float created from its back 
twist tool and yarn clockwise
lift the e-wrap onto the empty needle on the right 
Repeat the process with the loop on the left of that needle pair, and do so across the bed before continuing to knit. The wraps will create full stitches on the next pass of the knit carriage.
An example working with a randomly selected pattern from Stitchworld, #156: 
A: the pattern is divided and shifted so as to plan the trim beginning with decreases rather than increases
B: with the superimposed table grid in numbers, the eyelet transfer squares were traced, adding all black rows for slip stitch selection of all knit stitches in between each transfer sequence
C: increases and decreases are planned by removing black squares
The image was then scaled in GIMP, and downloaded with img2track.
The straight edge eyelet detail alternates the direction of transfers to the right and in turn to the left in each segment.
On the curved edge, increases and decreases were performed manually prior to each 2 knit rows. Empty needles need to remain in work positions throughout.
I chose to use the fully fashioned method for shaping, moving 2 stitches to the left for decreases, and two to the right for increases, then picking up from below the adjacent stitch to their left to fill in the empty needle. This was slower than having planned needle selection for eyelets do the work of shaping.
A very similar charting process may be used to construct circular “doilies”, where the slip stitch rows are used as a substitute for hand-selecting needles to holding/ short row positions. I have revised my 2011 post on lace meets hold and goes round/, plan on following that up with one using edging repeats to achieve that type of shape.
Lace knitting tips, to mesh or not to mesh 7
Early versions of the Brother Lace Carriage (LC) for machines such as the 830 did not have the capacity to control end needle selection. If any needles were selected for transfer to an end needle not in use in the piece, the LC still will attempt to move that stitch, and if no needle hook is there to accept it, the stitch will drop. Where an and needle has been selected on either or both edges, the option that remains for folks with no automatic way to cancel end needle selection is to push those needles back to B position by hand. Since selection is likely to not happen every row, it may be an easy thing to forget as the length of the piece grows.
Later LC models include mechanisms like those seen in punchcard knit carriages that override the selection made by the patterning device on the end needles.
There were also point cams, that help to change the spacing between vertical lengths of design repeats. For images of the Lace carriage and use of point cams please see posts 2017/10/05/lace-point-cams-…brother-machines ..
Electronic carriages are equipped with a magnet, and must always travel past the center needle 0 position center mark on the needle tape. Markings on factory punchcards give clues as to which carriage to use and for how many passes. They also may vary depending on the year the punchcards or mylars were issued. To review, here are some of the markings commonly found
The graphic from the KH 860 punchcard model manual 
Illustration modified and adapted from multiple decades-old Japanese magazines of fine lace
single complete transfers 
Multiple transfers may be made either as a hand technique or expanded for use in electronics. Because single stitches are moved with each carriage pass, pattern repeats can become quite long, with few punched holes or black pixels 
Generally, it is best to use a yarn that is smooth, has some stretch, and does not break easily. Because the yarn will be transferred to and from or in addition also be shared between needles, some extra yarn may be needed for proper stitch formation. In overall meshes, it is best to start testing using a tension at least one whole number higher than when using the same yarn for stocking stitch. Too loose a tension can result in dropped stitches or loops getting hung up on gate pegs, too tight and the stitches will not knit off properly or drop, or the yarn may even break. When eyelets are few in number, adjustments in tension may not be needed.
Begin with waste yarn and ravel cord, then followed by casting on and knitting at least 2 rows before beginning to use the LC. The cast on will need to stretch to accommodate the growth in width which increases with increasing numbers of eyelets. The same applies to the bind off. One option for matching both is seen in this “answer lady” video.
In most punchcard repeats, if when the row of transfers is completed there are two or more empty needles side by side, troubleshooting is required to solve the problem unless are intentionally planned in the design, with deliberate adjustments to components of the overall pattern repeat.
The needles need to be in good condition, with latches that open and close smoothly and easily. Also, check for any bent gate pegs, and use a tool to even out the spacing between them if needed.
Error corrections need to be made matching the proper stitch formation. As in any other knit, if tuck stitches occur in the same location and are not part of the planned fabric, it is likely the needle is damaged and needs to be replaced. If a loop is sitting on top of a needle with a closed latch prior to knitting the following row, that stitch will drop. If it is noticed prior to knitting the row, the loop can be knit through the stitch manually while being mindful of what action that same stitch should take in the progression of the pattern. The appearance of tuck loops, red row
To form eyelets a loop is created on the needles emptied by the transfers on the first pass with the knit carriage to the left (red), the stitch on that needle is completed as the knit carriage returns to the right (cyan)
If when trying to correct the direction of a transfer or a dropped stitch the transfer is not formed properly and the stitch in that location is knit manually the eyelet will be absent 
The traditional placement is for the LC on the left, the KC (knit carriage) on the right, but there are patterns that can work with their placement reversed or even swapped at regular intervals as knitting progresses.
Bringing needles out to E before the all knit row may help avoid additional dropped stitches when there are multiple stitches on any needles. Though knitting may proceed smoothly, checking the work frequently visually will make rescues of problem areas possible as opposed to having to restart the project. It test swatches are hard to knit, it is likely the problems will multiply when a larger group of needles is in use and the project should be put aside.
Because there are so few markings in lace, the lace card does not necessarily resemble the finished stitch appearance. Needle pre-selection does not make as much sense as in other types of patterns. Where knit stitches occur in vertical stripes may also not be immediately evident. Some shifting on the needle bed rather than centering may be required to have a cleaner edge, which also matters in seaming.
There are a definite top and bottom direction to lace, so in knitting scarves or sleeves that is a consideration. One solution is to knit 2 pieces in mirrored directions with many possibilities for methods to join them. No top-down on sleeves if you wish to match the body and it has been knit from its bottom-up.
It is possible to use short rows combined with lace patterns, but any shapes created are likely to change visually, so planning is required unless those changes are deemed suitable. Traditional holding by changing the knit carriage setting may not be used. Needles to be put in hold need to be knit back to A position and brought back into work as needed. Ravel cord or any tightly twisted cotton may be used. If needles have a tendency to slide forward when holding large sections or at the hold starting side as the piece progresses, some tape may need to be placed in front of the needle butts on the metal bed to hold those needles in place. These illustrations of the process are from an early Brother machine manual 
As with any knitting, there are times where nothing seems to work for no good reason after intervals of smooth knitting and no other changes, and a break is best for both operator and machine.
The greater the number of eyelets in the pattern, the wider the finished knitting. Blocking in some form will usually be required to set the stitches, and may be required if the piece grows in length and narrows as it is worn or hung when stored.
Out of habit I usually leave weaving and tuck brushes in use for all my knitting, but particularly when creating textured stitches and lace.
Gauge swatches should be larger than usual, all in the pattern, and treated as the final piece will be in terms of pressing, blocking, washing, and allowed to rest prior to obtaining measurements for garment calculations.
When stitch symbols first appeared in Japanese publications they were represented as the stitch formation occurred on the knit side of the fabric, which could cause confusion since in machine knitting we are looking at the purl side. Eventually, Nihon publications made the transition and other pubs followed. 
A comparison of hand to machine stitch symbols with illustrations and more information: 2013/07/21/hand-to-machine-symbols-5-lace/
For cross-brand use: 2019/02/23/revisiting-use-of-lace-patterns-studio-vs-brother-machines/
I have been blogging for years and sometimes return to topics after long absences. In terms of more information on lace design and some tips on translating hand knitting instructions for machine knitting please see: 2013/07/23/from-hand-knit-lace-chart-to-punchcard-1/
2013/07/24/from-lace-chart-to-punchcard-2/
2013/07/26/from-lace-chart-…3-adding-stripes/
2013/07/27/frome-lace-chart…-4-a-border-tale/
2013/07/29/from-lace-chart-to-punchcard-5-to-electronic/
2013/08/29/from-lace-chart-to-punchcard-6-to-electronic/
A punchcard tale: after the chevron post, single color sideways chevrons appealed to me. Two variations from a Brother Punchcard Volume
A= the full 24 stitches wide repeat, half the required height for the punchcard user. B= the single electronic repeat. C= the single electronic repeat tiled X3, checking to see that pixels actually line up properly.
Punchcard markings of note: A= design row 1, B= mark for first row visible on the exterior of the machine, the card reader is actually reading 7 rows down, C= typical markings for the direction of the LC movement on that row, and for knit rows
The two rows at the bottom of the card reflect the overlap when punchcard snaps are in use to keep the pattern continuous. 
Looking at it in more detail 
Column identification at the bottom of the chart: A= direction of the lace carriage, pixels or punched holes preselect on that carriage pass
B= direction of transfers; note there are extra blank rows where their direction is reversed indicated also by the change in the color of the arrows. Multiple rows in one direction only, happening here in series of 5, will result in bias knitting. As bias is reversed, the zigzag shape begins to be created.
C= markings for 2 rows worked with the knit carriage, the pattern does not advance on those rows on any machine
D= markings on factory punchcard
E= design rows
When working with electronics, the actions need to match those indicated on the factory design beginning with row one punchcard marking on the right.
The width of the planned swatch or piece may be programmed for use with the single motif setting in img2track or the required default in Ayab. Adding a blank square at each end ensures the end needle will knit on every row, no pushing back needles by hand will be required.
Changing fibers opens up a brand new world: this swatch (unblocked) is knit in a tightly twisted rayon, edges also begin to create clearer shapes than that achieved by knitting the same design using wool.
Spacing out the zigzags, another 24X30 repeat. This is the minimum repeat for electronic KMs as well, knit stitch spacing (white squares) can be planned to suit 
Once again, one must be aware of whether the lace repeat needs to be mirrored on the specific model machine. I initially forgot to do this on my 930, which results in an erroneous repeat if the lace carriage is operated from the left. Planning the placement on the needle bed controls the number of knit stitches on either side of the resulting mesh shape. Today the rayon was having no part of knitting properly, this swatch is once again in wool. 
At one point I shared ideas for automating mesh patterns in lace edgings using the LC and the KC (knit carriage) set for slip stitch
Changing the above repeat for a zigzag border: in my first experiment, I tried keeping the number of eyelets in the zigzags across rows constant, did not like the visual “extra” line away from the edge, was happier with my second try. This fabric would do better with a yarn that can be blocked to shape, the wool used here is a tad too thin. There will be some tendency on the part of the eyelets on the very edge to appear smaller as the edge stitches are stretched into shape. It appears I also have a needle that needs to be changed
The transfers of the stitches by the LC while using the knit carriage set to slip in both directions to create the knit rows, will automatically create increases and decreases along the left edge. Due to this fact, there will be one less eyelet in each transferred row than the number of pixels/punched holes in its corresponding pattern row. The knit carriage in this instance preselects rows for the lace carriage, the lace carriage preselects all needles required on its way back to the left for the knit carriage to knit on its next pass. This chart attempts to show movements of the carriages and location of stitches after they have been moved along with eyelet symbols in their locations after the transfers 
The pattern repeat on the left below is as I drew it and intended it, on the right, it is mirrored for use to knit it on my 930
The first preselection row is from right to left, the knit is centered with 10 stitches on each side of 0. I canceled end needle selection on both carriages. The first row is knit, when the KC reaches the left side, set it to slip in both directions. As it returns to the right it will knit a second row on all needles in work, and preselect for the first LC pass. Extension rails must be used as both carriages will lock onto the belt for pattern selection. At the start of the piece, as the LC moves from left to right it will transfer preselected needles to the right. On its return to the left, it preselects needles that will knit as the KC returns to action from the right. Each carriage in this design makes alternating pairs of passes.
When the top half of the pattern repeat is reached, the LC makes its pass to the right on a blank design row. As it does it preselects for the next row of transfers, which are made to the left as the LC returns to its home there (A). Though the Brother LC does not knit and transfer on the same row as the Studio one can, it is able to transfer and preselect for the next row of knitting (B).
The above fact allows for planning transfers in both directions while still keeping the routine at 2 passes for each carriage to and from their original home. Based on that, here is another trim with eyelets in alternating directions along the side opposite the zigzag shape. The repeat is now adjusted to 22 stitches X 48 rows to accommodate the reversing eyelets arrangement. It is shown here mirrored for download to my 930. There is a blank square at the top right corner, the corresponding stitch will be cast on by the knit carriage on its move to the left, and transferred automatically when there is a return to transfers at the bottom of the design repeat. 
The yarn used or the swatch is a 2/18 wool-silk. There will be 2 stitches on each needle (A) at the very edge where stitches are transferred for decreases and look different than where the edge stitch is simply moved one needle to its left (B), leaving behind an empty needle. A parallel, similar difference is also noted at the inner edge of the zigzag shape. The sample is pictured turned 90 degrees counter-clockwise, its bottom edge appears on the right 
To mesh or not to mesh 6: chevrons
While creating the test swatches for a version of single bed 3D scales using the lace carriage 
I was intrigued by the chevron effect that became more obvious with color changes 
The fabric was capable of changing considerably in look and width that could be encouraged to remain more permanent with blocking. There is a visible asymmetry, with one side of the chevron actually containing an extra eyelet. Still trying to retain the 24 stitches in width design constraint, I began to work with simply counting eyelet transfers matching in number, guessing rather than planning. Tiling the repeats can help get a sense of how things line up horizontally and vertically. Electronic repeats can be minimal unless one is programming the pattern as a single motif that includes edge knit stitches etc when downloading via cable to an electronic or using Ayab interface.
A and B continue to produce uneven numbers of eyelets on each half of the resulting “V” shapes. The greater the number row repeats of eyelets in a single direction, the more the resulting bias. If asymmetry is the goal, then this may meet the need. I knit most of the swatches on 48 stitches, with more needles added on the right if needed to ensure the edge stitch will be a knit one. Larger shapes require wider tests. The photo is rotated to reduce its length on the page 
This effort produced uneven sides of the Vs, and the eyelets along one of the vertical center column were not properly formed, resulting in an added knit stitch 
The added eyelets in pattern C produce an interesting change from a sort of V shape to more of a W, but the fabric is still unbalanced 
Back to the drawing board: a different mesh, with eyelets in alternating numbers, resulting in a more balanced fabric. Here the charted repeat is shown X2, side by side.
Different day, same yarns, both were having none of it. When knitting progresses in this manner, it’s a good time for the machine and its operator to practice social distancing. 
The quality of the lines produced by the mesh was different and heavier than the one I was seeking, though the number of eyelets remained constant on both sides of the center stitches, alternating on the alternate pairs of design rows. Back to charting things out in Numbers: though the LC, usually (but not always) starts located on the left, preselects on its first pass to the right, and begins to transfer to the left on its second pass back to the left, in order to visualize the direction, the repeat is mirrored. Cyan cells indicate transfers to the left, magenta transfers to the right. This 24 stitch repeat shows where 2 transfers wind up on a single needle while an extra knit stitch is also formed in the blank vertical column, seen in swatch above. In programming an electronic KM the black pixels alone with 2 blank rows above the second set of transfers is enough. I like to program repeats that are a bit larger, and usually will tile them as well, looking for any errors my eye might notice before any actual knitting 
Using electronics one may expand or reduce the number of stitches in the repeat to reach an estimated equal number of eyelets 
With any mesh, the number of knit rows may be varied between each pair of transfers. My swatch was knit using a 26 stitch repeat width
The cast on used is a temporary one. In final pieces, the quality of any bind off and cast on should be tested as well to accommodate the changes in width lace fabrics may have, increasing exponentially on the number of total eyelets. The knitting this time went smoothly. The eyelet count was as planned. That said, I was 6 stitches away from completing the bind off when the yarn simply ran away from me and chose not to make any effort at rehanging the piece. In the top blue stripe, the number of knit rows between transfers was increased from 2 to 4, while in the top white stripe I alternated between 4 and 2 rows of knitting. Playing with such intervals between transfer rows of transfers can produce interesting differences and perhaps a more static quality in the fabric after blocking the completed item. The knit carriage is set to N, so it has no effect on the advancement of the programmed lace pattern.
As often can happen in machine knitting, another day, same yarns, same tension, same operator and stitches drop, get hung up on gatepegs, and perform other unwanted actions. My next test aimed for that “W” shape. I downloaded an image that accounted for all needles in use for my swatch, so in the 930 using the isolation button on by default with img2track was OK. Your machine may vary as to which side of center the extra stitch will be placed when the total number of stitches in width is an odd one. If uncertain, plan the repeat for the next even number, in this case, 52, divide it evenly on each side, and either air knit to sort out selections before casting on or simply transfer that extra knit stitch over one as you begin to knit. In a final piece, good notes will provide reminders for such small details 
The blue yarn refused to knit off properly, so the added colors were tried to see if I fared any better using them. My first swath was discarded, the second one is shown. The repeat is sound, the visible “errors” are the result of stitch formation issues. The swatch stretched in length that could be set with blocking
has a very different look when lightly touched with my now fiber burning iron 
Different day, all other things being equal, same needle locations resulted in easy success. I programmed for a 60 X 24 repeat, planning for different size Vs.
During knitting, these fabrics will appear to be producing straight color stripes
It takes a while for the change to begin to be noticeable 
This was the result as the work came off the machine, relaxed, with no treatment of any sort the ribber is in place there are avid beliefs expressed by folks in terms of whether or not to bring the knitting to the front of the ribber, I am a between the beds’ advocate. Also, even with the ribber off my machines have always been set up with ribber table clamps in place since having them flat simply never worked as well for me in any of my knitting.
A one-color zig-zag from a Brother punchcard pattern book with a different approach, that could serve as trim or form an accessory. There are limitations in producible width. The stretch of the cast on and bind off and the fact they need to match as closely as possible while allowing the mesh to stretch sideways in blocking must be taken into consideration, as is the fact that every end needle selection will occur regularly and those selected end needles must be pushed back consistently. There is no way to avoid that on a punchcard machine, in electronics one could again program the width and add blank pixel column on each side. Here the cast on was using waste yarn and continuing in the pattern, the manual end needle canceling of selection was inconsistent at the sides, and LTBO (latch tool bind off) around single gate pegs was simply not stretchy enough. 
Here the cast on and bind off match very closely. I used the looser cast-on method described by the “answer lady” in the video, but I bound off around 2 gate pegs instead rather than wrapping the needles as shown, a method often used on the Passap
More information: a hand transfer striped lace variant 2014/03/27/striping-in-lace-fabrics-1/, and another using a stock punchcard 2013/07/26/from-lace-chart-to-punchcard-3-adding-stripes/
Single bed scales made with stitch transfers
WORK IN PROGRESS
In the past, I have explored several ways to knit scale-like fabrics aka dragon teeth/scales, and a multitude of other names. My test swatches were created using racking, pattern repeats were provided for both punchcard and electronic machines. Some of the archived material:
2018/07/19/more scales and chevrons racked fabrics 4
2016/02/22/ hand knit dragon scales
2016/02/02/ vertical racking 3: automating half fisherman in pattern-2
2016/01/13/ racking 2: vertical chevrons and herringbone
With summer here and a long absence from lace knitting, I was curious about producing scaly fabrics single bed. Lace transfers may be used to create folding fabrics with permanent pleats, so what about 3D shapes? I began with a repeat suitable for a punchcard machine and its limitations, adjusting it in 3 different ways 
A variation of Card C, with 2 rows blank after each pair of transfers throughout was used in borders in some of my lace shawls including these, made in 2011. 
All 3 card designs share the fact that the lace carriage (LC) makes 4 passes followed by 2 rows using the knit carriage set for normal knit to complete the eyelets with exceptions. The exceptions are in areas where there are extra blank rows, there the lace carriage will make 6 passes in order to reverse the direction of transfers. Brother lace cards usually start with punched holes on the very first row, have 2 blank rows between LC passes that complete one sequence (here each sequence is 2 rows in height), and 2 blank rows at the top of the card. Lace markings are few and far between, errors are easy to make when punching long cards and working in designings with pixels in particular. In this case, I did not notice until I began composing the post, and after I had completed the first test swatches that the repeat on the left has an extra 4-row segment in the top half, making it 24 stitches X 54 rows as opposed to the other two at 24 X 50.
In any lace patterning if a zig-zag is wanted in parts of the design, having 3 blank rows in planned locations will reverse the direction of the transfers from those below them. Blank squares in rows containing no punched holes (or pixels) will have no transfers, so in their absence stitches in those areas will be knit, producing extra stocking stitch rows. The spacing for such knit areas on the card may be adjusted to suit. This segment of the above designs identifies the areas in both rows and columns with no punched holes (or pixels)
The knit side of the fabric is the most interesting. The swatches were at first photographed as they were immediately after their removal from the knitting machine. I also tried to photograph them at an angle to show the protrusions from the surface. Pattern A:
A short test version using cards B, and C
When using card A, the shapes alternate vertically between all mesh ones with all knit rows at the outer edge of the folds. Using Card B, all protrusions have a fixed number of knit stitch rows at the outer fold. Card C produces an all mesh fabric that made me think of ocean waves somehow. Turned sideways, and pressed to set the folds, the resulting fabric could provide a springboard for a host of other, different ideas: 
A larger swatch started on waste yarn, with 2 rows of knitting at the bottom and at the top before binding off. The design is card B, with 4 rows added to each half of the design. I am still working with the constraints of a punchcard machine, and for the moment, of retaining symmetry in the width of the “scales”. The working chart, turned counterclockwise to save space 
Planning for 3 repeats based on 24 stitch widths 
the above arrangement will, in turn, need to be mirrored for the lace pattern.My sample was knit using 2/15 wool at tension 7, using needles 36 left to 35 right 
The actions reviewed once more
The knitting in progress
I cast on loosely enough, but the bind off was too tight at the top, which should always be tested on swatches before committing to a project. The resulting fabric was photographed immediately as it was removed from the machine. I tried to touch the edges only with an iron, and mine is now overheating and doing a good job of burning my wool, thus the color changes in spots 
With an attempt at some steaming and pressing, the folds are retained 
Often the question of what fine lace is and how it is made comes up. Fine lace is a fabric against which I have a personal bias. It seems to involve a lot of work for the result unless one is using a light-colored yarn with a smooth surface to show the subtle and at times hard to observe surface changes. It fares better visually when mixed with eyelets. The yarn is shared between the needle that would normally be left empty and the one with the formed stitch already on it to its right or left depending on the direction of the transfer. If the shared yarn is dropped instead of staying in the hook of the transfer needle, as the next 2 rows are knit there will be eyelets on the ground lacking them anywhere else. Card C, knit using only the fine lace setting on the LC, looking very different from the previous fabrics, both knit and purl sides are shown, with a couple of spots where the yarn was not shared by 2 adjacent needles, forming eyelets
Now evaluating the possibility of mimicking my hand-knit version:
Planning out a repeat in chart form:
Knitting began with working in a 2/15 wool, tension 6, using a 7 prong tool with all prongs engaged to transfer groups of stitches onto their new positions on the needle bed. The first two images review picking up from the row below to fill in needles emptied by transfers. It is one of the machine-knit equivalents for the M1 direction in hand-knitting patterns. As a result, the number of stitches being knit remains constant throughout the piece
The stitch structure so far appeared too loose to me, so I then switched to a 2/8 wool, at tension 7 with the intent to test knitting as tightly as possible while still facilitating the multiple moves of stitch groups on each row. The resulting fabric was stiff and wanted to curl strongly to the purl side, needed pins to help it lie flatter. The shapes refused to stay poked out to the knit side.
I seldom wash my swatches, viewing them simply as proof of concept of technique concepts, not usually as springboards for finished pieces. Generally, I stop at steaming or ironing if needed.
When I made garments for sale in wool I usually tested the swatches and washed the finished garments as well. The “hand” and the behavior of the finished piece can change considerably. The hand-washed sample in the second illustration below lies flat, has a soft, drapey feel absent in the unwashed, retains the flatter shape with no encouragement needed. In its 2/15 portion, the “scales” became more flattened as well.
Washing wool removes any sizing and excess dye. Open spaces in the knitting become reduced in fulling, as opposed to closing tightly in felting. Using a constant temperature in both the wash and rinse and avoiding excessive friction, in turn, avoids excess shrinkage. 
On electronic machines, one does not have the limitations in terms of the width of the repeat maxing out at 24. For example, the number of eyelets on either side of the block components of the repeats may differ, the greater the number of eyelets, the wider the spacing between the 3D shapes. Gradations may be planned in height and width of repeat blocks across the full needle bed, limited only by patience in designing, the capacity to download, and the tolerance for both the yarn and the operator to complete wide, long pieces using the technique.
Experimentation can yield quick results, sometimes with unexpected but pleasant surprises. One of my best selling felted items for a couple of decades was an accessory that was planned deliberately to mimic a test piece that had almost been tossed in the trash. It’s good to return to things after a break for another look, and then it is really helpful if notes were kept. Another variation of the A-C cards in single repeat was tested at the bottom of the swatch below
and in a staggered one, tested at the top of the swatch
The “scales” were more like twisty bumps, with subtle variations vertically in some of the stitch groups. That said the results were dramatically different when color changes were added to the pattern knitting in the shorter repeat. Blocking may make an even more marked difference depending on whether the mesh (lightly steamed) or the tighter knit (vertically pulled, should be washed) produces the preferred effect. The looser stitches at the top outside edge ie at the top left corner are the result of a stitch that got away from me. The cast on was a bit too loose, I knit 4 rows at the bottom after the cast on and 4 rows at the top of the repeat before binding off.The differences in the width in the same fabric are dramatic. Any overall mesh/ lace fabric blocked for openness such as on the left will grow in length over time, is best stored flat, and will benefit from episodic pressing/ steaming to reset the width. Then I began counting eyelets, which were equal in number in the schematic for the repeat, but not equal in number on either side of the center pivot for the bend in the herringbone shape when the piece was finished. Any extra eyelet rows in the same direction will result in increased biasing in those sections. Time to test more mesh variations, a topic for another day.
Long stitches meet transfer lace
Eons ago, when I was exploring long stitches I shared directions for a tuck stitch combination fabric 
At about that time I came across this image on Pinterest.
It combines transfer lace and long stitches, has characteristics that make some lace patterns unable to be reproduced on home knitting machines. Upon inspection, one will see that the number of stitches varies in different parts of the repeat. Aside from creating eyelets, the smaller triangular shapes increase in width, the fan shapes are decreased by half on their top row. Long stitches are created across all needles in work, then they are reconfigured so the center single stitch of the triangle and the center 2 stitches of the fan shape realign in the same position. The number of stitches at the start of the pattern and after the long stitches are created remains constant. 
Trying variations on inspiration sources can lead to success, failure, somewhere in between, but also increase learning and skill that will carry over into other knitting techniques, even if the results are never used for a finished piece.
The Brother ribber is used to produce the long stitches. A bit of review: the bracket lever has 3 positions:
Dropping the ribber down 2 mm on each side gives enough clearance for thicker yarns. At a seminar, I saw Susanna use the position to create transfer lace in ribbed fabrics, something I have been threatening to try for decades, but have not yet. Here the lace carriage is shown in position, clearing the ribber’s gate pegs. 
My preference is to create a chart in order to visualize and plan an “attack” prior to any knitting. White squares represent needles emptied by transferring their stitches to the right and to the left respectively. One must remember to keep empty needles in the work position to form eyelets. 
I found making the transfers easier an the process more visible if I dropped one side of the ribber to the second, 17 mm. position
The ribber remains set to slip <– –> on all transfer rows, and any all knit rows on main bed only. 
The ribber is set to N <– –> for three rows. On the first pass, all its needles will pick up the yarn, creating loops on every needle
With the ribber carriage alone, still set to N/N, free it and make two passes to and from its starting side. The first pass releases the loops, the second returns it for coupling with the knit carriage. Below the long loops can be seen. My needle tape is “somewhere”, has not yet been returned to the ribber after my racking handle adventures were completed.
Return the ribber settings to slip in both directions, and repeat the process. Dropping the ribber to the lowest position at any point can verify goings-onHere one row has been knit on the main bed only, anchoring the loops, returning carriages to the opposite side prior to starting transfers once more
A word of caution: if loops are picked up on any single row that in theory was set to slip and was to be worked on only single bed, check to make certain the tuck lever has not been accidentally brought up to the tuck position. Although tuck <– –> can serve for a free pass on the main bed, having this setting on the ribber will create loops on all needles in work 
My test swatch had a couple of different# of transfer trials in horizontal segments and a few operator errors. It was knit in wool for the “spring” of the fiber, and unpressed formed pleats of sorts, while with a hard press it flattened out considerably, with not as much of a wave as I might like. 
My later effort led to a fabric that was different from the inspiration one, but far more interesting to me than the one above. I began with a schematic, originally planning only 4 eyelets, then adjusted for 5 (yellow line marks the change) 
I cast on 55 stitches 27 left, 28 right. A ribber comb and weights are required.
Having a chart with any numbering that makes sense to you is helpful.
I used a water-soluble pen to mark the center needle location for the start of transfers on either side, in this case, 18 left, 1 and 19 right. The 55 stitches include 2 full repeats of 18 plus a half (9) on each side edge.
Brother has 2 #1 positions, one on the left and the other on the right of center, separated above by the red line. The fact is something to be kept in mind with stitch counts for hand techniques where needle selection is not automated across the needle bed but is reliant on accurate counts by the knitter
A 3 prong tool was used to make transfers, the pattern could be translated for use with lace carriage if one desired to do so.
At the bottom of the swatch I stopped after 4 transfers before creating the long stitches, and then switched to 5 guessing I would like the transition better, also a clearer stopping place occurred when a single stitch was left with doubled-up ones on either side of it.
I did not find it necessary to drop the ribber at all to check on the progress of transfers. Below the swatch is shown on both sides, both relaxed (to my eye the more interesting) and after light pressing
It appears to me to be the sort of fabric that is worth revisiting after a break. 😉
Revisiting use of lace patterns Studio vs Brother machines
2011: There are several brand KMs still around and in use, most are no longer being manufactured. Questions often come up on using one KM brand pattern card on another. Card readers inside the machine are below eye level, so exterior number/other markings on cards or mylars reflect that, providing the knitter with a visual cue as to where they are in the repeat. If machines pre select, the needle selection may not bear any relationship to actual design row on the punched card or mylar as opposed to what one sees. In addition to this variable in lace one often has 2 carriages in use. It is possible to develop cards etc. from lace hand knitting graphs, but there is enough going on so a good place where to start experimenting is with pre drawn ones. Lace preselection on any single row may have no obvious relationship to where the lace hole will ultimately end up.
Here are some random facts gathered from both sources and experience, they are applicable only if the knit carriage is set for plain knitting and no other function ie. slip or tuck is involved; plain knit rows do not advance the card reading mechanisms. In mixed structure fabrics the rules change.
The Brother and Toyota lace cards can be used on studio punchcard machines as long as they are patterns which have 2 blank rows after each transfer sequence
Brother and Toyota have u shaped arrows to identify when to knit with the knit carriage, both brands read cards 7 rows down
The first row on Brother is transferred from right to left, while on Toyota it is transferred from left to right; Brother and Toyota cards are interchangeable provided the card is mirrored vertically (or a simple cheat: use carriages on opposite sides of usual)
For Studio knitting find the row number of the U shaped arrow and circle the 2nd and 3d row below that row that number to identify rows in which carriage is changed/set to knit
Brother ends with 2 blank rows
Studio starts with 2 blank rows
on Studio begin brother card by locking card 4 rows before row 1, on row 3
Brother/Knitking lace carriage does not carry yarn, does not knit or trip the row counter; the stitches get transferred in the direction that the lace carriage is being pushed
Studio/Singer has a lace carriage available that transfers as it knits; on more complex laces one is sometimes instructed to set the carriage not to knit for a specified number of rows, the yarn may be removed, other adjustments are often required
though Studio and Brother lace cards are not directly interchangeable; aside from the numbering issue the transfer method is different, so a studio lace card working on brother or vice versa is a happy accident and likely to result in different fabric
Brother information is applicable to its new clone, Taitexma
A few references :
Machine Knitting: the Technique of Lace by Kathleen Kinder
Knitting Lace and A Machine Knitter’s guide to Creating Fabrics by Susanna Lewis
Machine Knitting: the Technique of Pattern Card Design by Denise Musk
John Allen’s Treasury of Machine Knitting Stitches
The Harmony Guide to Machine Knitting Stitches (their Colorful Guide to Machine Knitting Stitches does not include lace)
322 Machine Knitting Stitches (Sterling Publishing,1988)
2013 In this instance I am exploring the use of punchcards that are designed for transferring and knitting at the same time as seen in Studio simple lace in machines such as Brother, where the operation is the result of using 2 different carriages.
the Studio card used
the resulting fabric
The method: both carriages are used to select needles, use lace extension rails on both sides of the machine. Cancel end needle selection on knit carriage underside if possible, or push end needles back manually if needed to avoid their corresponding stitches being transferred throughout the piece. Set up for knitting the pattern as usual, punchcard row 3 (marked in pencil) becomes row 1 of the design when the above card is used in brother machine. The arrows always indicate the direction the lace carriage will move across the knit to make transfers in the direction of that same arrow.
- begin pattern knitting with COR, card locked, change knob on KC, no cam buttons in use. This will result in needle selection, but the fabric produced is in stocking stitch. The lace carriage is engaged o the opposite side, moves toward the knit carriage to make the transfers, as it travels across the bed the now empty needles will once again be in B position.
2. (lace carriage) travels back to right and is released off the machine (same needle selection appears, but those needles are now emptied of yarn)
3. COL: KC moves left to right, knitting the single row, all needle hooks now are now full, new needle selection occurs
4. LCOL: makes transfers toward the knit carriage, and then makes a second pass to return to opposite side and is released.
These 4 steps are repeated throughout the knit, with the knit carriage knitting and selecting, the lace carriage following its selection to make the required transfers. Not every transfer row will match the direction of the arrows as marked on the studio punchcard.
If there is no pattern needle selection with the KC pass on any row(s), continue to knit until there is needle selection, and begin process using lace carriage to transfer toward the knit carriage from the opposite side and once again releasing it after its second pass.
A caution: hesitation and reversal in movement of carriages in Brother machines advances the card in the reader, and results in mistakes in patterning; if errors are to be corrected or such movements need be made for any reason, it is worth locking the card, checking row numbers, remembering to release the card before continuing, and visually checking pattern after the next knit row.
2013: While working out yet another HK to MK lace pattern, I sorted out the following method for using Studio simple lace on the electronic KM. It is a method that does not work on the Brother punchcard to produce the same fabric however; on punchcard machines as either carriage is moved to select from opposite side of the bed, the card will not advance on the first pass, interrupting selection. I tried a swatch and got a very different lace design; depending on the starting pattern the results may be interesting (do not use elongation), but not the ones intended to match any original.
The knitting samples shown below were knit on a Brother 910. On electronic machines, as seen in previous posts on knitting with 2 carriages, the mylar (or otherwise programmed) repeat advances a row with each pass of the carriage, no matter on which side of the bed the pass originates. Dropped stitches are harder to repair in these fabrics than in patterns for multiple transfer lace (there knitting can be unraveled to the start of a sequence where 2 or more knit rows usually occur), so checking transfers, gate pegs, and adjusting stitch size and weights matter even more. There is no need to mirror the image horizontally; draw repeat as is on punchcard onto mylar, all variation buttons down
start knitting with KC (knit carriage) on left, Lace Carriage (LC) on Right program pattern double length
on the first row the LC selects, the next row it will transfer; LC always makes 2 passes first toward the KC, then away from it, even if those 2 rows in repeat have no needle selection. I is then removed from the bed to be returned to the bed on the opposite side after the knit row with KC that follows. In summary:
KC knits a single row to opposite side
*LC is placed back onto machine opposite the KC to make 2 passes, is removed.
KC follows with a single knit row to the opposite side*. * to* steps are repeated
3 total carriage passes complete one row of knit. The chart below shows actions and placement of carriages
This sample was knit beginning with lace carriage on left, as can be seen in marked areas, the alternating repeats have a different quality in the sets of transfers marked red vs green
The successful swatch knit beginning with KC on left, LC on right in the method described above
April 2019 I attempted the same repeat on the 930 with img2track. I flipped the repeat horizontally and elongated it X 2 prior to knitting it. The arrows in the chart indicate the movement of the lace carriage, beginning with the first preselection row from the left 
I had issues with the proper needles being selected (proofed also in fair isle), but with random stitches not being transferred. A switch in lace carriages, needle retainer bar, yarn, did not eliminate the problem. I finally had to perform some of the transfers by hand. This swatch also shows the joy of missed dropped stitches in lace knitting, the yarn used is a thin acrylic
December 7 2018: an interesting method using 2 electronic lace carriages found on youtube . The repeat used in the video is actually the same used in my sample above, programmed using img2track. In the video the repeat is mirrored prior to knitting, there are extra knit rows to allow LCs to continue pattern from alternate sides 
2011: Studio transfer lace on Brother bulky and standard machines
Studio multi transfer lace punchcard use on Brother punchcard machines
112
Studio multiple transfer lace with single rows knit between repeats on 910
This image shows the published inspiration used in post (bottom), and a studio punchcard book version found at a later date for the same repeat>. At this point in time my image editing has evolved. Both repeats below were obtained by processing and scaling the original image in Gimp, for process please see posts 1, and 2
on 930 img2track use #1 variation key with pattern repeat as shown, or flip horizontally prior to download. Ayab knitters pre latest software release: mirror repeat, tile repeat width across the number of stitches to match the number of needles to be used in your final piece. There will be no needle selection at the end of each sequence, signaling the need to release the LC, knit one row, and continue with LC brought to opposite side. This is a very fussy knit. At several points it is loops formed on previously empty needles that get transferred rather than full stitches. They love to get hung up on gate pegs. It took a significant amount of time to produce the proof of concept swatch. It is a lovely lace. Knitting it on a punchcard would give one the luxury of frequent pauses and markings to make for additional clues
LCOL 9 passes, release
KCOR knit one row to left
LCOR 7 passes, release
KCOL knit one row to right
LCOL 5 passes, release
KCOR one row to left
LCOR 3 passes. release
KCOL knit one row to right
Mesh experiments using thread lace punchcards . This image also illustrates the yarn lines created in the eyelet spaces: single thread for when single rows are knit between repeats, twisted double threads when 2 rows knit between transfers.
A complex published transfer lace to electronic repeat for download/ GIMP editing
Lace on the machine can render beautiful fabrics that closely resemble hand knitting, but programming very long repeats is a challenge both in placing every hole in the correct square in a punchcard and in programming individual pixels on a mylar or as pixels for download correctly. I found the “leaf lace” repeat below shared frequently on Pinterest and thought I would test the approach discussed in the post on using numbers and gimp to create images for electronic downloads. Because it is 16 stitches wide, it is not suitable for punchcard knitting, which requires a factor of (4, 6, 8, 12) and up to a 24 stitch maximum width.
The published pattern on the left is shown as shared on Pinterest. In turn, in was captured, opened in Gimp, and magnified. After a threshold adjustment, it was converted to a BW indexed, scaled to its 16X96 original stitch and row count, and then saved in 100% magnification result for the possible electronic download.
On far left below is the first BW processed single repeat isolated from its source. To its right it has been adjusted so the first row is a preselection row for the lace pattern, and the full repeat ends with blank rows (Brother KM characteristic). The latter in turn was saved as an image for download. Since the leaves change direction in the way they lean, the spacing between each pattern swing in the repeat is actually 3 all blank rows, not the “standard” 2, including at the top. The bottom half begins with the first row resulting in transfers to the left, while after the first 3 knit rows the transfers will begin to the right. The plan was for me to use Ayab for knitting a proof of concept swatch. In order to achieve that, the full repeat is first flipped horizontally (ayab will auto mirror it, so starting with it this way it will be in the correct orientation when knitting). The mirrored repeat may be used in unaltered machines as is with LC operating from the right, KC operating from the left (not possible in ayab without adjustments). The full repeat consists of 16+14+18+16+14+18= 96 passes of the lace carriage, for every 12 rows knit. My sample was programmed horizontally for 3 full repeats, the width of my planned swatch. I added one additional needle in work on each side, with the LC end needle selection canceled, allowing for the full pattern as programmed with a single stitch all knit border on either side 
A tightly twisted cotton yarn did best in terms of handling the multiple transfers and not resulting in split stitches or breaking. I had occasional selection errors, seen in the center panel at the top of each repeat (my common experience with the interface), but the repeat itself appears to be sound.
Lace repeats that have even numbers of rows for both and LC transfer and knit ones are easy to follow. Punchcards are also easily annotated and if knitting is interrupted needle selection is easy to return to or restore if necessary. In electronics, there may not be any memo to indicate row # location for each carriage pass in pattern, or when to switch carriages. Because in this instance there are so many transfers (some of multiple stitches) between knit rows and dropped stitches are best corrected as noticed during knitting if possible, I created a “cheat sheet” of sorts to help keep track of actions. Each block outlined in red here represents one full repeat, read from their bottom-up, with blue borders at the center and red at the end of each half sequence. A visual check at the end of each segment’s # of rows in the series is well worth it to prevent unnoticed runaway dropped stitches and large holes. A check-in box next to # could indicate the completion of transfers. and a number added manually in that same row for that sequence, record the row on which knitting was interrupted ie. stopping on row 8 out of 16 to fix dropped stitches would be a reminder 8 more LC passes are required before the next visual check. 
9/23/18 In now have been experimenting on a 930, where each pass of the LC is actually tracked, akin to following numbers on a punchcard. Built-in patterns also offer a memo window, which will alert the knitter as to when knit rows are due 
In testing the pattern with img2track I found the LC passes are still counted, but the memo window is absent upon download. I generated a chart in Mac Numbers, reads from the top-down, expanding on the one above. It illustrates the number of LC passes (left column) required to produce any significant length of fabric. Patterns such as these are not for the faint of heart and require a friendly yarn. 2168 passes of the LC (33 full repeats, outlined in green; red line separates half repeats) are accompanied by 396 rows of “actual” knitting. 
In actual knitting, the pattern advances from row 1 to 96, and back to 1 again. A check-off list can be much simpler if one is desired. The numbers on left appear in the LC window in a 930, when reached 2 rows are knit with the KC. The numbers at the top reflect completed repeats. Boxes can be checked moving to the right as those rows are completed
Another option is to download the pattern in img2track, and then enter memo information prior to knitting it. Two youtube videos that show how to enter memos in machine models that allow it, 930 included https://www.youtube.com/watch?v=S0tXNT76v10 and https://www.youtube.com/watch?v=nR8MheT5Bao. The number 2 may be entered after numbers on left appear in the LC passes count window, and provide an easy guideline to follow. And this is what testing lace patterns can look like. In this instance, a tighter stitch tension, a bit of change in weight, and visually checking after each row of transfers brought me some success. This is not a stitch pattern that lends itself to easy “repairs”. 
Lace edgings on Brother machines- automated with slip stitch
August 2020: I wrote this post (unaltered) in March 2018. I returned to the topic of automated lace edgings on Brother machines in July 2020. As often happens after some distance, details may be freshly observed or seen in a different light, and approaches may then in turn vary. Some of these edgings have been reworked, and new ones will be added. My blog posts have evolved into “works in progress”, with my adding information as I have time. The latest swatches are knit on a 930 using img2track, but the same repeats should work in the 910 with ayab, after mirroring them.
The initial goal here is to produce a knit fabric using lace transfers in a familiar way, but the knit carriage will now be set to slip <–>, selecting needles with each pass. In routine lace patterning, the KC is set for plain knit, does not preselect needles, advance the mylar, punchcard, or another electronic patterning.
This image, where all blue squares represent knit stitches and white squares unworked ones, is provided with the intent of its being produced as a piece of knitting on the machine. The initial hand technique approach might be to use a single prong tool to move the edge of the blue in one stitch to the right for a decrease and out one needle to the left for an increase. When the decrease is made on the bottom curve, the needle from which the stitch was taken is put back out of work. When an increase is made, a stitch is moved to work on left, and the last stitch on that side is transferred onto it. As knitting continues, that now empty needle location will create an eyelet.
I decided to “wing it” for the first swatches. This illustrates the same knit shape. Blue rows represent all knit rows and stitches, the empty pairs of rows leave areas to insert lace eyelets in a pattern.
Arrows indicate the movement of the lace carriage on left, knit carriage on right. Red squares now represent transfers to right, green ones transfer to left
A second transfer to the right is included in the pattern close to the left edge of the trim to create eyelets next to the decreases, matching those eyelets created by stitches moving out in the increase segment of the chart
A theoretical series of right and left transfers is then inserted, creating a shape in the center of the trim’s width
Now reducing it all to black and white squares or pixels for first preselection from right-hand side using an electronic. This repeat is not suitable for use in a punchcard machine even though it is 24 stitches wide. Electronics advance a design row with each pass of the carriage when cam buttons are pushed in and with both carriages set to needle select. Punchcard machines in those circumstances do not advance when the alternate carriage is brought into work from the opposite side. This charted repeat is usable as is on an unaltered 910, with the first preselection row from right to left. LC operates from the left, KC from the right.
For use with Ayab software two other things need consideration. Ayab mirrors lace repeats, so either mirror the repeat of the original design or choose action mirror in the software prior to knitting. This is a screengrab of the repeat used for my initial swatch test. I later changed the section where the diamonds cross in at the center of the eyelet repeats 
In addition: those first 2 rows need to be all knit, so the top row of the design was moved down to row 1 position.
KC preselects left to right, knits black squares to left, preselects the same needle selection again to knit those same stitches traveling back to its home on the right, creating the two knit rows that in “normal lace” would be worked with the KC simply set to knit. As the KC now knits the second row, it preselects needles for the first row of transfers, rests on the right
LC transfers to the right as it travels to the left preselects the next row of transfers. As it moves back to left it transfers to left, preselects for first of 2 all knit rows, rests on left
The sequence is repeated until the piece reaches the required length.
End needle selection is off on both carriages. As LC travels to left, because of no end needle selection, the first needle on the right is not selected. An option is to manually pull that needle out to insure it knits. I decided I actually preferred the chain created by those single stitches knitting only every other row but was not happy with the elongated stitches on alternate rows edge stitches on the increase side. These would be the carriage actions 
To review: end needle selection is off on both carriages. As LC travels to left, because of no end needle selection, the first needle on the right is not selected. An option is to manually pull that needle out to insure it knits. I decided I actually preferred the chain created by those single stitches knitting only every other row. I had a serious yarn tangle on the right about halfway up the swatch, with some of the evidence visible in the approximate center of the swatch photo 
changing that crossing of the diamond outlines, still winging it
My fiber is now crisp cotton, unmarked weight, tension 8, and it is much easier to observe areas that may still be a problem for me as the designer. Ideally, I would prefer the lines created by the transfers marked in cyan to match the quality of those immediately below or to the ascending part of the diamond on their opposite side, which would require changes in the transfer sequences and space between knit rows. The LC nonselected stitches on the straight creating every other row slipped stitch is still something I like. The difference on the edge stitches in the ascending angle is happening because with each transfer out, there is a single thickness of yarn on the new edge stitch, and moving the stitch over a needles space elongates it. Longer loops btw are also created when single increases are made by bringing needles into work on the carriage side prior to knitting a row across all needles. In the trim’s decrease edges, the transfers in each new edge stitch have double the yarn thickness contributing to a different appearance, highlighted with magenta arrows. There are 2 rows that have no edge transfers programmed intentionally in the center before reversing direction, so that area has no resulting edge eyelet. 
The last shot at adjusting the repeat, with improvement in those cyan, marked areas. Plain knit rows may be added between each repeat, the edge of the knit will be different than in the remaining trim on each side
Going back to the wheel that has already been invented, how can pre-drawn published MK lace repeats be used instead of “winging it” endlessly or not having the confidence to perform the necessary assigning symbols and proceeding with the required separation? Still trying to work with a pattern that knits for 2 rows, transfers for 2, a chart from Stitch World:
marking the 2 all knit rows that will be plain knit by programming black squares 
The pattern is actually for an all over lace. All the transfers in the central diamond actually are happening in the same direction. If the repeat was programmed in the usual manner, beginning with LC on the left, those transfers on the first design row and in the whole of the center diamond shape would all be to the left. I can live with them all being to the right, and would be interested in more eyelets at the edge of the trim. Here is a new repeat, with the increased eyelets at the curved edge 
Remember if using ayab to mirror the above repeat (seen on right) prior to preparing to knit it 
There is a disruption for 2 rows in the very center of the diamond, where no increases or decreases occur on the shaped edge prior to reversing the shaping. It was there in the earlier sample marked with arrows as well, but not as noticeable where the edge was created with the addition of single eyelets on increase and decrease rows.
Not finding any other candidates to alter for this purpose in stitch world at the moment I am left with the option of going back to the Brother punchcard book collections, and reviewing what needs to be changed for those same patterns that work so well with the KC set to plain knit but are now to be knit with the KC set to slip <—–>……
3/7/18
a lace punchcard repeat with transfers in opposite directions 
Assigning colors to transfers: red to left, blue to right. In theory the same repeat could be used flipped horizontally for operating the lace carriage from the right. Yellow lines highlight the 2 blank rows in card that will be replaced by black squares/ pixels (remember rules are different for slip and lace in punchcard knitting)
Since the goal is a trim, things are rearranged for knitting to begin on the full 24 stitches 
There are 2 ways to get the above repeat to work, one is by adding extra blank rows. I chose to reverse positions for transfers, moving left transfers upon row, and red down one row. With lace carriage operating from the left this is my new repeat, with edge shaping added for trim edge
KC is set to slip after the first preselection row, first set of transfers is selected on its second pass to the right. The first transfers with the LC are made to the right, the second set to the left. If knitting the repeat using Ayab remember the above is mirrored by the software, so choose action mirror prior to configuring
I knit a swatch using the thinner yarn again. The difference in increasing angle can be seen here as well, the pattern is short, so the outer curve of the trim reflects that 
This would be my test repeat for knitting the same trim in ayab with the LC operating from the right. The software would mirror it, no action needed. The last row is shifted to the bottom to allow for the knit carriage to find a home on the left. The first row knit would preselect 2 needles only, with KC then set to slip in both directions, the next two rows should knit, preselecting the first row of transfers to be made by the LC operating from the right.
I am unable to test the repeat. I have had intermittent problems with patterning in the software from the time I installed the kit. In multiple efforts and restarts, I am now getting no selection at all or wrong selection with LC operating from the right, while rows advance in the software and beeps continue. I have knit lace with the LC on the right before, but not with the KC selecting needles as well. Possible solutions and causes to be determined. 3/8/18 I have been told upon testing by others the same issues have been encountered that I did when using the KC to select from left and the LC from the right and the problem appears to be the result of a bug in the software to be addressed in future updates.
3/10/18: an adaptation of Susanna’s automatically shaped trim for Brother KM, p. 223 of “A Machine Knitter’s Guide to Creating Fabrics”. This chart shows the first rows of the published punchcard. Please note: using my own lace carriage, when I tested canceling end needle selection, the problem was not solved. Brother setting recommendations made for a similar transfer pattern in an edging published by them, are given and repeat is pictured at the end of my post.
Row 1: LC moves to the right, no needles selected
Row 2: LC moves to left, preselects next row of transfers
Row 3: LC moves to the right, transfers preselected needles to right (red dots), selects needles (if any) for next pass to left
Row 4: LC travels to and transfers to left (green dots), preselects for the first row to be knit by KC In this particular pattern the direction of the arrows match the direction of the transfers with movements of LC operating from left
Row 5: KC from right, set to slip <– –> knits all needles in D position, repeats the same selection as it travels to left (yellow marks)
Row 6: KC travels back to right, in the second shaped knit row, preselects for the next transfers to be made by the LC
Row 7: LC travels to and transfers to right, preselects for next row of transfers
Row 8: LC travels to left, transferring to left if any needles have been preselected on the previous pass, and the process continues
The numbers on the punchcard chart do not reflect actual row numbers in knitting because when row 4, 10, etc is reached, on the next pass (a blank row in the card), the card does not advance and the previous selection is repeated. For each carriage to make an even number of passes to travel to and from its original position, the total length of the repeat must be an even number of rows.
Here are the 24 stitch repeats adjusted for knitting on the electronic. A for an unaltered 910, B indicating the direction of transfers (red to right, green to left). Arrows mark the problem row, and my solution to it C on the far right, along with the repeat adjusted for use with Ayab.
the ayab screen image for working the edging 
Both KC and LC are set not to select first and last needles in my directions. When the decreases start to happen on the left of the chart because the end needle selection for transfer to the right again does not happen in areas marked with magenta arrows, there is an extra stitch that remains on the left that does not get transferred (orange dot) so it is not knit off and simply get held as subsequent rows of knitting take place. Restoring needle selection in the LC is not a solution for the problem, so the final repeat has been amended by me to get that edge transfer. The pattern starts on cast on 20, not the full 24 stitches. Ayab knitters: use the LC to begin selection from left. The first pass will select for a knit row, push those needles back to B, and the LC will select for transfers to right on the next row as it moves to the left. When knitting is to take place there is a clear distinction in the number of selected needles (black squares). The KC will be set to slip <– –>. Make certain to remember to return the remaining 4 of the 24 total stitches back to B so the full repeat is in work on the needle bed before continuing in the pattern, otherwise there will be needles there to accept stitches moved over for increases to left.
The two extra passes of the LC in this method result in a 2 stitch border on the increasing and decreasing angles of the piece, creating a much nicer edge than that in the samples at the top of the post. The eyelet so close to the right edge stitch which also winds up being slipped every other row made for very messy loose stitches in the thicker cotton that I could not control. The sample did better when I pulled the non selected needles on knit rows out to hold prior to moving across them with KC. 
When working on electronics the 24 stitch limit in width for the repeat is no longer there, extra knit stitches may be easily added to the right of the pairs of eyelets along the non-shaped edge. Having those extra stitches knit on the right side of the repeat made it possible for me to use my cotton again, giving me a controllable edge on that side without having to pull stitches out to make them knit. To my eye, I find the extra passes with the LC and those extra knit stitches on the right are well worth the effort and planning in the finished piece
the ayab repeat 
Something to try: I found instructions ascribed to Brother
for another version of edging using a pattern that has the same eyelet sequences along the shaped edgings. Their recommendation for a 950i is to remove the non-selection mechanism on the lace carriage, and mention was made of the “rubber wheels on the carriage” being uppermost, allowing the end needles to be selected. My lace carriage has fixed, old fashioned brushes, not rubber wheels, and my eliminating end needle selection did not solve the problem with that single stitch in the center of the repeat. And if there is not enough to keep track of, this also combines fine lace and traditional transfer lace, would work fine as just lace.
3/15/18 after more testing I have come to the conclusion that end needle selection cancellation on my 910 LC is working properly, but is not operative when I am working with my Ayab interface.
Lace punchcards meet Ayab
1/8/18 It appears I now have acquired preselection from left to right on the first pass with my Ayab software, which I have been told is its “normal”. I am revising the information I have offered since I began working with Ayab if needed because of this, beginning with lace. This punchcard design is worked with each carriage operating for 2 rows, and all transfers in the same direction. The LC (lace carriage) on left, the KC (knit carriage) on right. An added note: sometimes punchcard designs may be used as provided, not altering the repeat in any way. Accidentally marking squares or pixels in the wrong spot, or deliberately starting with the LC on the wrong side, may still produce interesting fabrics. As always keeping good notes is more than well worth it. 
punchcard actions: transfers are all to the left (seen leaning to right on the knit side)
With the first preselection row using Ayab beginning with the LC on the left, the same transfer sequences occur as in the punchcard machine or a single repeat on a mylar
swatch knit with the LC operating on the left, the KC on right throughout
For use with the color changer, the same repeat may be used. Transfers, however, now need to occur with the LC operating on the right giving the knit carriage the opportunity to travel to and from the color changer in 2 (or more, even #) row sequences. Using a punchcard, one would turn a punchcard over before inserting it into the card reader to work with the LC beginning on and continuing from the right. To achieve the same fabric using Ayab, shift the top row to the bottom of the repeat, and either mirror your image prior to importing it into Ayab, or use its mirror action in the pull-down menu. The chart shows the repeat prior to mirroring, with desired actions described to its right. It is not possible to read the first row from beyond the right set line using Ayab, so the LC begins on the left, travels to the right on the first blank row, selects on the second pass to the left, transfers stitches as it travels to the right again and stays there, operating from that side for the remainder of the knit. All transfers are now reversed and made to the right, and seen leaning to left on the knit side of the fabric. After the first 3 LC passes, each carriage operates for 2 rows at a time, all transfers are to the right, lean to the left on the knit side of the fabric.
Possible striping choices: the differences between areas marked A or B is in the location of the color change. In A areas the color is changed immediately after the single transfer at the top of the “triangle”, in B areas the last eyelet is completed in the same color used up to that point, and the color change is made after the first row of 4 transfers at the base of the “triangle”. More complex lace repeats create much more interesting variations in the direction and movement of the stripes.
verification on a different day, LC on Left, repeat not mirrored
The punchcard for fabric from 1/25/18 post. This fabric creates large eyelets, there will be 2 empty needles side by side for the duration. Some of the old pattern books referred to it as one of the “mock crochet” ones.
operating with LC on the left 
operating with the LC on the right: the repeat is mirrored 
the original repeat (re-worked on 24 sts)
Ayab for operating with the LC on the left, repeat is mirrored 
Ayab for knitting with LC on the right, original repeat, rows split
The bottom of the swatch was knit with the LC operating from Left, the top with the LC operating from right after its third pass illustrated in the “triangle” lace description above 
repeated testing, bottom LC operating from left, top LC operating from right
A sample of weaving and lace see discussion of a punchcard to mylar conversion
for full details. The punchcard was originally designed for operating both the knit and the LC carriages from the right. If KC I is used resulting in end needle selection on only the first and last needles in use, prior to passes of the LC push those needles back to B. If there are 3 empty needles on the edge on either side on rows preselected for weaving, bring the outside needle to work/ E prior to laying in the weaving yarn. 
The image tiled for the width of my knit, in this case, 32 stitches, a multiple of 8
I actually cast on an extra stitch on each side at the beginning of the piece with the intent they not be in pattern and create a single knit stitch border in areas of transfers. Here are the results, barring a couple of spots the weaving yarn did not get caught properly. The pattern as drawn produces a fabric that is interesting, but different than the intended
With the pattern flipped horizontally / mirrored, we now have the same results as in using the 589 punchcard
So to mirror or not to mirror? that is the question… I tested 643 and 650 from Pattern book #5, found mirroring was indeed required for transfer accuracy. I verified that the “triangles” do not need to be mirrored to match the punchcard swatch. The notable difference in the latter is that all transfers are in the same direction and that each carriage operates for only 2 rows.
Two more to try, directions are not ayab specific: a large diagonal eyelet lace combining lace and tuck
12/28/17: tuck lace meets hand technique 
For more lace samples and symbols and suggestions from punchcard books on knitting the fabric, please see punch-card-book-symbols-and-samples
A Fair isle sample with deliberately mirrored lettering proved the program knits what it sees, so my letters were still reversed, as drawn.
On 12/25/17 I shared my first try at lace using Ayab and the workaround for the first pre-selection row occurring from left to right. The LC is the one to select for transfers, the KC knits to complete the formation of stitches. Brother punchcards for lace usually begin with selection rows, end with 2 blank rows at their top. Because Ayab requires a first pass from left to right for the next row to be selected, to get the pattern to work one needs to split the 2 rows at the top, bringing one of them down to the start of the repeat. If knitting continues with the LC pattern as originally drawn, the transfers will occur in the opposite direction of that intended. To work around that, the image may be mirrored in the paint program before download, or use action/mirror in the Ayab menu before knitting. One nice added feature is that blank rows may be left at both sides, creating a knit stitch border, and eliminating the problem of paying attention as to whether end needles are selected or not, and what measures to take. This fabric creates large eyelets, there will be 2 empty needles side by side for the duration. Some of the old pattern books referred to it as one of the “mock crochet” ones. These repeats do not hold with first-pass preselection from the left.
the original repeat
the repeat mirrored
the resulting fabric, knit and purl sides
no mirroring, software patterning errors in one of the test swatches
operating from the right, using the color changer
