I am making a rag quilt for my grandson out of old denim and new plaid flannels. I am told the flannel needs to be prewashed. Do I do this is the machine? Will it not start it to raveling even before I use it? I remember when I was in high school home economics when we used to "relax the fabric" by stitching all the way around it, wetting it. smoothing it out on a counter and letting it air dry. Is this what they mean about prewashing the flannel? I'm ready to start cutting, so I need help as soon as possible. Thanks a bunch!
