Originally Posted by Venice
I just bought a walking foot or darning foot and it has a spring and then in the bottom of the pkg was a little bar with grooves in the middle of it. What do I do with that???
A walking foot and a darning foot are 2 different animals. The walking foot is usually a very large gizmo (since we are using technical terms in this thread) that replaces your regular foot. It has little feed dogs (or grippers) on top of the foot so when your needle goes up and down, the fabric is pulled along from the top by the foot and the bottom from the feed dogs in your machine. This is why it's also called, a dual feed foot. A darning foot is much more variable. I have a viking and there are probably 4 different darning feet that viking offers, plus more from after marketers. Since you mention a spring I'm guessing it's a darning foot, but I would follow the advise of a previous poster and put a picture up to get more specific help, also tell us what type of machine you have.