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【GRAPHITE CRUCIBLE】: Notched graphite crucible made of natural graphite, with good thermal conductivity, high temperature resistance and low coefficient of thermal expansion at high temperatures. Developed for easy removal from the furnace: No metal is wasted. If you are doing precision processing of gold and silver, it is recommended not to use the same crucible for different metals. 【INTELLIGENT PRECISION CONTROL】: Equipped with advanced pid module and digital control system, it achieves precise and convenient melting of metal, monitoring the actual temperature of the melting chamber every 2 seconds so that it is not overheated or undercooled. 【RAPID MELTING】: The integrated furnace wire sealing machine can be heated quickly, can be heated up to 1150 ° C, and can melt metals with a melting point lower than 1150 ° C in 40-50 minutes, such as: Gold, pure silver, pure copper and aluminum. 【PREVENT BURNS】: The melting furnace design of the heat insulation net can effectively prevent burns. The graphite crucible has been polished many times, so it is very smooth, which can fit the hole wall well and increase the heat transfer efficiency. 【PERFECT 7 IN 1 MELTING KIT】: The package included includes a gold furnace machine/graphite crucible/graphite ingot mold/tweezers/high temperature gloves/power cord/instruction manual. This furnace is ideal for professional use in industry and workshops. Warm reminder: When working, the most important thing is to protect yourself and avoid high temperature burns.