Originally Posted by OurWorkbench

I'm guessing that it may have been turned, but one could probably could zigzag the edges. Here are some links for what I think you may have seen.
https://www.youtube.com/watch?v=c8GAg9zByvE
https://www.needlepointers.com/main/...tubepageid=175
https://lifesewsavory.com/fabric-bas...al-for-spring/
https://kamsnaps.com/blogs/news/kam-...ic-basket-tray