1 gallon paint can metal melting furnace interior mold

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A mold for the internal chamber of a paint can furnace is created using furnace cement. The nozzle of a Bernzomatic TS8000 MAP/propane gas torch is inserted into the side with a 10-degree slant towards the top to disperse heat evenly throughout the furnace in a vortex. First, part one is placed at the bottom center of the can and secured with hot glue. Then, the bottom of the can is filled evenly with 1.5 inches or 38mm of furnace cement and allowed to set. Next, the mold is centered within the can, with its stem against the inside wall where the torch entrance hole will be. The void between the mold and the can is then filled with furnace cement and left to cure. Sand is used in the center of the cavity to hold the mold firmly in place. Finally, a cut is made for the torch entrance hole in the side of the can, and the torch is used to burn out the mold. Part one serves as a crucial drain hole in case of crucible failure.