Huston, we have Swatching!
Right now I'm only concerned with recreating the pattern on the straight grain and testing my theory on the border. If you want to knit along with the crazy woman, here's my test swatch pattern #1:
There are a total of seven eyelets in each openwork chevron, and the scale is VERY large, given the size of the strands you can see between them. I have two theories on this: larger needle than would normally be used for the size of yarn used, OR double YO that are treated as single YO in the next row
. I'm thinking full size it's sport or worsted on fat needles. I have some 11s and some really fat ones that I can try for actual size with after I figure out the pattern. For the moment, though, I'm swatching for structure.
I'm making two swatches, and one will have a simple yarn/needle size discrepancy (fingering and size 9 needles) and the other will be sock yarn, 9 needles and double YO.
This has two full repeats of the chevron pattern, straight grain, so that I can figure out how deep to make the solid chevron between open repeats. it starts with the double-eyelet foundation row like the shawl.
sock yarn, cast on 31 sts on a size 9 needle.
Purl all sts first row and every odd row.
Row 2: K2, (YO,K2tog) 13 times, YO, K2.
Row 4: K2, (YO,K2tog) 13 times, YO, K2.
Row 6: Knit all sts.
Row 8: K4, *SSK, YO, K5, YO, K2tog*, K5, repeat *to*, K4
Row 10: K5, *SSK, YO, K3, YO, K2tog*, K7, repeat *to*, K5
Row 12: K6, *SSK, YO, K1, YO, K2tog*, K9, repeat *to*, K6
Row 14: K4, *SSK, YO, K1, SSK, YO, K2, YO, K2tog*, K5, repeat *to*, K4
Row 16: Repeat row 10
Row 17: Repeat row 12
Row 18: Repeat row 14
Row 20: Repeat row 10
Row 22: Repeat row 12
Row 24: Repeat row 14
Row 26: K7, SSK, YO, K13, SSK, YO, K7
Row 28: Knit all sts (not sure about this row - may be too much for the solid chevron!)
Even numbered rows 30-50: repeat rows 8-26
Row 52: Knit all sts
Bind off, wash and block with pins. I think it might block out to a non-rectangular shape.
ETA: It may be a flattened version of this, too, with double YOs and 2x as many stitches width, but I haven't charted that yet.