Preventing damage to delicate metal parts.
Step 1: How It Works.
I service sewing machines. I often have to polish the needle hole in needle plates. It is nice to return the sewing machine to the customer without a marred plate. A pair of hinges are held to the vice jaws with small rare earth magnets. The magnets are placed between the vice jaws upper surface and the underside of a hinge. They stay in place well. They are easy to remove. They provide a nice smooth clamping surface.