My jewelry is hand fabricated from sheets and wires of sterling silver and gold. Metal is cut with a jewelry saw-hammered and also hand formed with pliers. My pieces are soldered with an acetylene torch then when all pieces of the design are finished I apply a patina which reacts with the sterling silver to create the darker areas to contrast with the polished areas of silver and yellow or pink of the gold.  My wall pieces are similarly constructed by cutting sheet steel and rods with band saw or plasma cutter. I often utilize rectangle stock that is cut and then bent in a vise once all the pieces of the design are welded into place I apply a multitude of different patinas to color the steel and create more depth and contrast between parts.