Annealing Pan 7" W/Pumice (rotating). Comes with pumice. May contain silica & toxic fumes. Annealing pans are used primarily for annealing your metal: heat your metal with a torch until it turns red, then cool it in cold water. The metal becomes more bendable/maleable and more easy to work with. Annealing also helps when texturing or stamping your metal, so the imprint appears more clearly and easily.