I bought the 1/4" foot for my machine and use it a lot. But while putting together a "Biscuit" quilt, found the width of the foot got in the way because of the 'puff'. Well, I pulled out my zipper foot, the one where you can adjust it to one side or the other ... guess what? It's exactly 1/4" wide. BTW if I had EVER put in a zipper since 196??? I probably would have known this.