1 gallon paint can metal melting furnace interior mold

thingiverse

A mold for the internal chamber of a paint can furnace using furnace cement. The nozzle of a bernzomatic ts8000 map/propane gas torch goes in through the side with a 10 degree slant towards the top to help disperse the heat from the bottom to the top of the furnace in a vortex. Place part 1 in the bottom center of the can and hot glue it in. Then fill the bottom of the can evenly with 1 1/2 inch or 38mm and let it set. Then put the mold inside of the can centered with the stem against the inside wall of the can where the entrance hole for the torch will be. Fill the rest of the void between the mold and the can with furnace cement and let it cure. I used sand in the center of the cavity of the mold to hold it in place. Cut the entrance hole for the torch in the side of the can and use the torch to burn out the mold. Part 1 is a drain hole in case of crucible failure.