I never wash any of my fabrics anymore but I do starch them. I use a dishpan with my home-made starch mixture, soak them, then run them thru my home-made wringer gadget to get the excess wrung out. This eliminates all that fraying a washer would cause them. Then I either hang them up to dry or lay them flat on a towel. I've done this to 5", 10" and jelly rolls. Once dry I mist them and then press them flat. Very little stretching out of shape doing it this way. I also no longer buy pre-cuts as I've found them to be not cut correctly or on an angle of the fabric which causes too many headaches to handle. I'd rather cut from my stash these days.