This easy-to-operate furnace has a high-temperature ceramic chamber, enabling extended casting time. The digital regulator, with built-in auto stabilizer, offers precise temperature control and maintenance. Use this unit to melt down precious metals and jewelry; such as, gold and silver; and base metals: copper, zinc, tin, aluminum, and more. Each unit Includes tongs, a graphite stirring rod, and a grooved graphite crucible matching your furnace size. Replacement crucibles are available for purchase.