HOSIERY BAGS DON'T HELP!!!! Found out that yesterday! Was finding that the black fabric I'm using seemed to shrink while I was using it (maybe steam pressing?) So I thought I'd better wash the 12 1 1/2" strips I'd cut for the borders. WRONG!!!
Did manage to unravel and straighten it, but , boy, does black tend to unravel more that other colors! Usually I don't pre-wash either, just a brief dunk in light starch.