I had to quit with hand quilting, and not able to machine quilt so I started tying quilts. I have used yarn, didn't like it after it was washed, have used floss and crochet thread with knots coming untied even with a square knot. I wonder does the perle cotton hold its knot? You ladies/gents have all the answers. I don't comment often but read your wonderful advice every morning. Smiles