Question about cover material.

[Robo]

My mom taught me to sew. I been sewing and repairing this an that since I was in my late teens. I'm 59 now. That Singer is one superior piece of U.S. machinery. It handled four fat layers of canvas just fine. Didn't even break a needle either. Cramming all that canvas through that tiny portable while stitching a flat fell seam was a trip though. ;D