Look at the Martelli binding system -- much lighter and much less $$. It is a set of feet and the doohickey that mounts on the DSM. You feed your fabric strip in it, it folds the strip into binding and wraps it around the edge of the quilt and stitches both sides down at the same time. A video is included which shows how to mount and use it, including turning corners. I bought one several years ago and plan to permanently mount it on one of my FWs, but haven't done it yet. I can't use it on my Berninas, because it needs an adaptor.