Am wondering if anyone has experience using old receiving blankets or sheet blankets for the middle layer on rag quilts instead of putting batting there. Are those fabrics woven loosely enough that they would fray out like the outside pieces? If so, they could be cut the same size as the blocks and would add to the fringe. (I'm assuming everyone knows what a sheet blanket is--kinda the same fabric as a receiving blanket for baby but for use on a big bed, sometimes between the sheet and the blanket--s'pose that's where it got it's name?!)