I bought a jelly roll of red fabrics for a binding and did not want to take the chance that they would run or fade. I put them in a lingerie bag and washed them. Bad mistake. Once I have them trimmed back to normal edges instead of 2-1/2 inches for my binding I will have probably 2-1/4 if I'm lucky. Even in the bag they raveled. Never thought about sewing along the raw edges. Might have helped.
mltquilt