Welcome to the QB from SE Michigan! I too have a Singer 66. I don't put this machine to work very often. I picked it up a few years ago at a garage sale for $10. It is currently sitting in my living room with a small quilt on the top. I am sorry I can't help you with the foot and I will keep my attachments for my older machines. Again welcome to the QB Thanks for jumping right in and I hope to see a lot of you.