I made the bom from last year on The Quilt Show designed by Sue Nichols and her sister Pat Holly. It had lots of raw edged applique which was fused down then the blanket stitch used around all the edges. Sue said she has never had a problem with fraying. I washed the quilt: no fraying of course has been washed only once. Used steam a seam light using the edge technique which only has the fusing around the edges.