Cut one four-inch-by-four-inch piece of copper sheeting and one matching size piece of aluminum sheeting using your metal snips. These sheets can be purchased at your local hardware store or home improvement store.
Hold the two metal sheets together with your metal tongs over a lit gas stove. Keep them there until the metal begins to glow red with heat. This may take several minutes. Wear your fireproof safety gloves and goggles during this step.
Lay the metal sheets on a hard stone or metal surface, not a wooden one. Pound the metal sheets together using your hammer. Do this while the metal is still hot. Wait until the metal cools. Wear your safety goggles and gloves for this part.
Pick the metal sheets up with your tongs and hold in the flame again until they glow red with heat. Repeat the pounding, cooling, heating process three more times.
Place your metal sheets in a metal baking tin, and put it in the refrigerator until it is cool to the touch. Compare the ductility of the alloy you have just made to the original aluminum sheet by performing bending tests on each one. The new alloy should bend much less than the aluminum alone.