Hi...10 years ago I made two quilts while taking classes...Lovers Knot & Double Irish Chain, using monofilament thread stitch in ditch and tieing in blocks. The materials are still great, the ties are there but the monofilement thread is broken everywhere from washing. Now I don't use them as often as one might if they only had a couple quilts but as a quilter, I have many & change frequently with the weather or mood, so they are not over washed. I am so unhappy that I have never used monofilement thread again on my quilts. Kayrn