This is a great project for finishing up dibs and dabs of threads on all my old wooden spools. For instance, I have lots of "Belding Corticelli Pure Silk size A" and lots of nylon, including an old spool of "Heminway Bartlett Made for xxPont" (Dupont?) Nylon 490 that sold for ten cents. I have no idea how old it is, but I am guessing at least 80 years. I love having - and using - old threads for Inchies! Sure, I have a few battles with breakage; uncooperative threads get moved to the bobbin.