Fretwork or piercing work is sheet metal cut with a fine fretsaw. It can give the most intricate results. It is a relatively quick technique to use but it needs a good focus of attention when working on a small scale - a split second of distraction can spoil an intricate or symmetrical pattern. I often work in two layers, cutting a pattern in the top layer then soldering on to another sheet of metal (Applique), then oxidising, enameling or setting stones into the recessed shapes.