How long can felting take? I have a vest that I made years ago with yarn I bought about 20 years ago. I've never worn it because it's too large. I thought I'd try to felt it and see what happens. I'm trying to felt a swatch, and it's been in the wash over an hour and the stitches are still distinct. Is it time to give up? I don't have a label for the yarn. I didn't think they made superwash back then.