Happystitcher, thanks for another good use for dryer sheets. Is that a used dryer sheet? Thanks to all the rest of you for your tips. I had no idea about all this. I have never used thread from the bobbin, but I might someday. And I've never paid any attention to which leg of the thread I've tied the knot. This has got to be the most informative board on the web. Thanks to all for sharing.