My first DBJ tests from a previous post on knitting with elastic. used an axometric shape, with the tentative repeat worked out and in turn, elongated X2 and tiled to check alignment.
Until doubled in height the original repeat is composed of an odd number of rows in height. Usually, double bed knitting relying on color changes or automatic DBJ KRC separations require an even number of rows in the motif. The first sample was knit using single-ply cotton and elastic yarns respectively, fed through separate upper tension disks but knit together as a single color. The swatch is 72 stitches in width but measures only 14.5 mm (5.7 inches) in width, producing a gauge of nearly 13 stitches for inch, not achievable when knitting with standard fibers on a standard 4.5 mm machine. The pattern is subtle, more visible on the knit side, hard to tell there are pockets in the knit. The cotton is space-dyed, and as true when using such yarns, that causes some confusion in immediately identifying a clear pattern. The ruffled effect is simply from a plain knit start and color-changing stripes to test tension and knittability on the planned needle width. Machine settings: opposite part buttons, no lili
Here the same pattern was executed on the same number of stitches with the white wool used above, but the elastic was plied with a 2/24 acrylic yarn and knit as DBJ with the blue, stretchy combination creating the solid color backing. 
A comparison in scale 
The same pattern repeat knit with striper backing is far less interesting 
The solid color backing in DBJ can be produced by changing ribber settings with each color change from N/N to slip <– –> and back. I have sometimes knit DBJ with 4 carriages or with a third, knit-only carriage working the rows normally slipped by the ribber. The sinker plate for one knit carriage is altered as described in the post. The knitting requires that the ribber stops be removed, and that carriage(s) be off the bed on extension rails while the other(s) are in use so as not to damage the belt. The maximum width of the fabric is limited by the necessity of having the knit cleared on both sides with all carriage passes.
My mongrel setup includes a 930 bed, an 892 punchcard carriage with a magnet attached coupled with the 850 ribber carriage, and a 910 carriage with the modified sinker plate. As a bit of possible disaster prevention, the knit/ribber combo has an elastic to ensure the ribber stays on its own bed as well, while I grabbed extras to help support the rail on the other side just in case the 910 carriage went too far. 
Because when using the KRC separation the white squares knit first, I planned the repeat for 64 stitches color reversing the repeat used the FI and thread lace samples in the previous post.
to this, 
I used a 2/18 wool at tensions 3/3 for the backing fabric and two strands of the elastic with no added changes to its yarn mast tension, at tension 7 in the single knit carriage.
Using this method of DBJ, which is the same as that used in 2 color quilting, when the ribber and knit carriage both knit, the fabric is sealed where there are needles selected on the main bed. When the ribber is set to slip in both directions, or the method here is used, the main bed only knits selected needles and skips the nonselected ones, creating floats and pockets in the fabric in those areas. 
The appearance of the fabric when stretched and weighted, still between the beds 
and off 
Going the far more traditional route of traditional dbj with the use of the color changer, striper backing with the ribber set to N/N yields a wider, flatter fabric with an interesting purl side 
while my very brief effort at attempting to knit with one side of the ribber set to knit, the other to slip, met with immediate dropped stitches by the elastic. 
The birdseye version had more of a bent on
the surfaces of both colors. I stopped knitting when a few of the elastic stitches on the left purl side dropped off. It would appear at this point that the most interesting effects in the simplest to execute DBJ setting are ones with balanced positive and negative spaces in the design.
Previously I used the repeat on the top left, also shown tiled. The subsequent swatch was knit using the bottom 66X22 tiled repeat, planning to start KRC preselection from the left on a white square, the ribber set to N/N
I found the fabric attractive on the purl side, but I was having issues with dropped stitches I could not explain that would need sorting out if producing larger swatches. 
Adding a third ply of elastic was disastrous at any tension. Better results occurred simply by increasing the ribber tension by 2 whole numbers, the knit tension by 1, and reverting to the previous yarn usage. There is a single dropped stitch in the elastic, and the result has much more of a 3D effect. 
The test swatch in progress 
I used a short cast on comb for weight across the piece, moving it up cautiously on a regular basis 
It is helpful when starting in waste yarn or simply using plain knit rows at the bottom of a test swatch to choose a clearly contrasting color. Here I did not do so, the drawn line is to help define the start of the shape formation created by the holding sequences and eyelets. The eyelet on the outermost edge of the circumference “disappears” as that edge gets stretched to the max. Two eyelets in the diamond shapes are not formed properly
knitting without a knit gauge can be dangerous, here a guess is made as to how many more units might be required to make the final shape go round
I committed to 8 wedges, another attempt at a check for size prior to seaming the shape.
Before joining the stitches permanently, a quick look to see if there was enough knitting to form that pie 
The least satisfactory and most visible join is the latch tool bind off. Grafting by hand off the machine is the least so. For the sake of ease in identifying open stitches easily, both methods would benefit from a couple more all knit rows between each segment as seen in the repeat in the original doily post in spite of the fact that the shape around the very center opening will change.
Planning for diamond rather than bow shapes, the repeat was changed from a 28X68 one to a wider, 32 X 64 
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, and 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 
after the transfers single needles are empty, with double stitches in adjacent ones, and 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 
and 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 
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. 
Before the 2 knit rows, there will be the doubled-up loops in each of those needles, and the 2 doubled-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 the E position before using the knit carriage. The differences between 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 
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
Needles preselected for transfer to the left 
during transfer, needles are preselected for transfer to the right. Doubled up stitches will now be moved 
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. 
its 22X48 png 
Most of the more recent proof of concept swatches have been knit on a 930 using img2track for downloads.
When using the slip stitch setting and changing the number of needles in work, or having ladders created by having needles out of work in the A position, the knit carriage end needle selection needs to be canceled (KCII).
In a working later model LC, end needle selection is in work (W) with the slots in the horizontal position, out of work (OW) in the vertical position.
The resulting, more successful swatch 
revisited 2024, the repeat PNG 
Charting it out anew: on the right is the amended repeat adding 4 more rows to the top of the original
The resulting swatches:
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 
Returning to the above repeats after a break in 2024, a new design, 24X48 is more resolved, columns of knit may be added along the straight edge, with or without planned eyelets, and the shape at the center of the XX also offers enough room for forming a DIY smaller shape. 
2020, a 24 X70 stitch version beginning at the widest part 
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.
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 png for the repeat as drawn, 18X72 pixels
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.
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.
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
The last Tessa sample, from page 60, brings up the topic of large eyelet lace, also revisited in a recent 
More transitions in planning, a 32X32 repeat:
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.
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:
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
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 
Use a smooth yarn that has some stretch and does not break easily. Because the yarn will be transferred to and from or in addition also being shared between needles in fine lace, some extra yarn may be needed for proper stitch formation. In overall meshes begin 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, tension adjustments may not be needed.
A comparison of hand-to-machine stitch symbols with illustrations and more information: 
The two rows at the bottom of the card reflect the overlap when punchcard snaps are in use to keep the pattern continuous. 
Column identification at the bottom of the chart:
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 
The transfers of the stitches by the LC while using the knit carriage set to slip in both directions to create the knit rows, and 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 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.
The above fact allows for planning transfers in both directions while still keeping the routine of 2 passes for each carriage to and from their original home.
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 the Ayab interface. 
A and B continue to produce uneven numbers of eyelets on each half of the resulting “V” shapes. The greater the number of 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 
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. 
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 
Exploring a smaller repeat, also 24 stitches wide 
The white yarn used is the same cotton as in the previous sample, knit at tension 9, the chenille is rayon, 1450 yards per pound, the eyelet patterns are stable and distinct, 
Another variation 
As often can happen in machine knitting, on a different day, the same yarns, same tension, same operator, and stitches drop, get hung up on gatepegs, and perform other unwanted actions.
The blue yarn refused to knit off properly, so the different added colors were tried to see if I fared any better using them.
and has a very different appearance when lightly touched with my now fiber burning iron 
During knitting, these fabrics will appear to be producing straight color stripes 
Taking the guesswork out of repeats, one may begin with or use published cards as they are, this is from a Japanese magazine, 
Here the cast on and bind off match very closely. I used the looser cast-on method described by the “answer lady” in the 
A very different chevron in an advanced technique combining tuck stitches with lace and fine lace patterning 
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. 
The knit side of the fabric is the most interesting. The swatches were 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: 
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 
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 knitting in progress 
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, looks 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 
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.
On electronic machines, one does not have the same 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. Graduations 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.
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. 
Adding a second color and reversing directions of shapes brings lots of yarn ends and its “price to pay”
Some handknit large scale inspiration to begin my revisit to MKing them: 
The chart is actually rotated 90 degrees counterclockwise, could serve as inspiration for an electronic pattern.
Automated holding sequences may be planned for single or multiple stitches in width, as well as for single and multiple rows in height. For the new initial test, which proved to need editing, this was my repeat
A tiny test in too thin a yarn 
I am knitting on a 930, the image needs to be mirrored in order for it to appear in the direction I intend on the knit side. The above repeat did not work properly when knitting a whole row of shapes. With some patience, a final, edited, and mirrored repeat was developed that enabled a completed a full row of shapes using the slip setting and holding, and starting with working it from right to left. Sometimes differences are subtle, especially in designing using single-pixel units. The new repeat proved to also work for rows of shapes in the reverse direction after horizontal mirroring and restarting the pattern or design row 1. When working from right to left, the initial preselection row is from left to right, while when working from left to right, the first preselection row is from right to left. After a full row of repeats is completed, the pattern is rolled back to row 1 and mirrored. Punchcard knitters could turn the card over and start again on the proper row. I used contrast color knit rows initially in between rows of shapes to help me note transitions more clearly. The “leaf” is not pointy enough for me, but at times what was not planned may lead to a pleasing result of a different sort.
To knit: cast on with a multiple of 12 stitches on each side of the center 24 on the needle bed
Moving on to a wider version, using 24 stitches in width to allow for using the pattern on a punchcard: this repeats works both as-is and mirrored, the groups of stitches moved in and out of work is now half of the new design repeat = 12. 
The lovely mess in the swatch happened when I stopped paying attention to everything but what was happening on the needle bed and missed the tangle of yarns in my yarn mast. There is enough knitting, however, to note that the repeat is sound and that the edges on both sides are formed by the narrowest part of the shapes in each direction. One way to solve that is by casting on and binding off along tops and bottoms of shapes as seen in the yellow and green swatch at the top of the post. 
Planning things out to release those edges as seen at the top of the post
Problems to solve: maintaining an even number of rows in-between shapes and a straight edge along both sides. The latter could happen with triangles prior to knitting full shapes at either or both ends, the first sample failed on the left side due to both triangles being knit in the same sequence; 
Begin on waste yarn, decide on the color of the cast on, and any additional knit rows prior to beginning in the pattern. Each of the side triangles is shaped using manual holding techniques over 12 stitches. If starting on the right, the first preselection row needs to be made moving from left to right as above on the first 24 stitches. With knit carriage set to both slip in both directions and holding with COL make certain the first 24 stitches on the right in B position make a free pass to the right.
Observations: there are elongated loops on the knit side of the fabric, likely created with slipped stitches. There appear to be eyelets on the purl side. The total number of stitches remains constant throughout the knit. The row repeat spacing is fairly close, so at least to start with I tried single repeats to achieve the look, was not pleased with any of the initial results. That led me to an online search for what would visually appear to have similar qualities in handknit samples. Knittingfool.com is an extensive resource and, to my eye, this slip stitch pattern, 
as do “oats” found in a 1984 handknitting publication 
and then transitioned to translating any repeats for use in machine knitting, keeping in mind that in hand knitting actions are made as the row is being knit, while in machine knitting they take place prior to returning the carriage to the opposite side thus knitting that row. This was my first repeat after replacing cells with squares representing knit stitches with black and white planned pixels for electronic download.
The slip stitch setting is used in both directions throughout. White squares represent areas where needles on the bed are skipped/slipped, not being selected forward and thus knit. This happens for 3 rows, resulting in the required elongated stitches. On the 4th pattern row, the group of 3 not selected needles is where the stitch transfers and crossings occur. Any cabling, eyelet fill-in, etc, needs to be performed prior to knitting that row and moving the carriage to the opposite side. The work is always done with purl side facing, so matching the direction of patterning to a hand-knit may also require mirroring of crossings, depending on your knitting machine model. The goal is to have the K3tog with the long loops in front of the single knit stitch in the center position.
Move the stored original center stitch back onto that center position, there will now be 3 stitch loops held on the single needle 
repeat the process across the bed, bring all the needles used out to hold position prior to knitting the next row 
The yarn used was 3/8 wool at loosest tension possible, the result is subtle as any spaces between stitches get pretty well filled in. Moving on to denser patterning 
The elongated stitch crossings now happen every 4 rows, but across two needles, not one. I used a tightly twisted rayon for the test swatch thinking they might be more visible, but the openness in the stitch formation because of the fixed spacing on the metal bed confuses the texture a bit. Simply leaving the empty needle out of work and continuing to knit (1) created too large an eyelet to my taste. Trying to pick up the third slipped loop (2) had the same effect. The best result was obtained by picking up from the row below on each side of the three stitches that are removed and then returned to the needle bed (3).
e wrapping the third row of floats can be tested by inserting a single eye tool front to back, twisting either counter or clockwise and rehanging on an empty needle, thus casting on an “extra” stitch 
the appearance on the knit side 
Charting the actions for a hand-knit version: the top images illustrate the moves on the purl side while on the machine, below it those on the knit side when hand knitting the pattern
Plotting out borders and repeats for a small test including make-1 increases in order to keep the total stitch count constant. I do little hand knitting nowadays, so when doing so I add as much information as possible including some stitch counts until the pattern is established and I can visually follow it more easily. 
The resulting test swatch 
This is an illustration of the method I used to “make one”, in my swatch I kept the direction constant
The 910 in my default setting produced the “image’ as drawn on the knit side of the resulting fabric. The post was written prior to my tiling the repeats as a matter of routine to check their alignments. Doing so would have shown a couple of missing pixels, and pointed to any other errors in filling in mylar squares.
All transfers were made in the same direction.
As always, ideas need error-proofing and refining, easier done in a chart if possible prior to any actual knitting.
There are a number of changes to make if it is necessary to get the pattern to reverse direction in alternate rows of completed shapes in a brick layout.
Attempts to visualize holding can happen in spreadsheets, documents, image processing canvases, or even simply on graph paper, moving/ “drawing” back and forth across the cells mimicking carriage movements and marking them accordingly.
The 930 automatically mirrors downloaded motifs, if direction matters, as in these samples, either mirror the design horizontally prior to saving the png for download to the machine, or use the mirror button selection on the operation panel after the download.
while here the repeat for all full-size shells is planned, 
Marking up the needle bed with water-soluble markers or pencils helps track placements of repeats across the desired number of needles in work: dark lines indicate placement beginning with the mark for half a repeat to maintain straight side edges on the finished piece. Red lines mark the placement of the stitches when they are moved to the left in order to knit the full shells across the bed. 
Scaling the image to render it a bit more legible:
The machine will be set for slip stitch in both directions and holding. End needle selection is canceled.
I used two repeats side by side to eliminate having to consider and choose the position option on the 930 needle bed, resulting in having the pattern centered in each 24 stitch fixed segment of needle selection.
I was too aggressive with clipping yarn ends on the left side, especially while in the process of changing colors, not ever a good idea. Automating the pattern fully on electronic models using only slip stitch patterning is possible. The length of such patterns grows exponentially in proportion to the size of the repeats. Reviewing errors in the beginning concept 
An attempt to visualize the placement of the shape variations in the finished piece using the shell motifs beginning with the shapes created in order to create a straight side edge
COR: knit a base row in color one from right to left
Preserving the 3D texture relies on using yarns with “memory”, ie wool and avoiding aggressive blocking. Using thinner yarns makes the stitch formation more evident. Hard pressing, in this case, knit using acrylic yarns, flattens the fabric considerably, and often, permanently. Both the hold/slip (top) and fully automated swatches (bottom) are shown.
2023: a screen grab from the shell charts was cropped to its outline, opened in ArahPaint, and using the program’s tool “
A return to the original 14 stitch repeat, illustrating a way to begin editing for an extra row in width at the bottom of the shape and ending on 2 stitches rather than a single stitch at the top
A Prada sweater using similar shapes 
If you are interested in any large size clamshells, and intarsia appeals to you whether in hand or machine knitting, 
the common illustration for shaping triangular shawls using such motifs 
