I've got a question. I have a puzzle box for a Singer 27. I took it to quilt guild to show a friend and she was wondering what one of the attachments was, so we looked in the book. It is an underbraider. She said she had one in her puzzle box too, and wondered how it worked. I told her that most of the attachments from the 27 should work on any low shank machine. She was wondering if the underbraider of the Singer 27 will work on a Featherweight. Does anyone know?