I used another scroll saw to cut the round knob into a wing nut shape on my Craftsman 16". I also replaced the main tension knob on the back with a flip down lever from a very old 16" Delta, since it didnt have a tensioner near the head. My poor Craftsman has been rebuilt and adapted many times over the past 21 years, but I just got the 22" Bauer just over a month ago myself. Keeping the Craftsman Franken-Saw though. It has kept me scrolling for many years (originally from a pawnshop for $15.00.)