GREAT Site with all kinds of info on metalworking! More information on Embossing & Tooling Copper Foil, Brass Foil & Aluminum Foil A basic how-to for artists and crafters by The Whimsie Studio craftsmen
Clamp metal between plywood to cut it with a jigsaw. Cut sheet metal without shredding it by clamping the workpiece tightly between two thin sheets of plywood. Begin by drilling saw blade starter holes inside all pattern circles. Cutting through a plywood sandwich is slow-going. For the smoothest cuts, select metal-cutting blades that have 21 to 24 teeth per inch.