Aircraft Spruce has a glass cloth designated #7533. Their description is "5.85 oz/sq. yd. Lightweight boat or tooling cloth. Plain weave. Thread Count 18 x 18. Breaking Strength 250 x 250 lb./in. Finished weight 5.64 oz.sq. yd. Thickness .009" as used on KR aircraft."
It comes in a 60 inch width and is priced at US$ 5.75 per lineal yard. I used it on my KR-2 without any serious problems. If I could get it to work, anyone can work with it. Jim Vance va...@claflinwildcats.com