Hmmm . . . I've done a whole quilt top with hexies but I did not do QAYG. I think you would definitely need to catch the batting around the edges or it would shift with washing.
I had some time so I went and looked around a bit. Most of the tutorials I found that actually showed you how to put them together either a) didn't seem to address the batting or b) used a decorative stitch either by hand or machine that went thru to the backing thus anchoring the batting.
Last edited by cashs_mom; 06-21-2021 at 11:37 AM.