We fired up one of the flower pot foundries we build last week to test some cheap crucible designs. We tried propane cylinder crucibles, and stainless steel can, but the power of our furnace was too much for either. Next week we'll try using ceramic and thicker steel to build our crucibles.
Reaching aluminum or brass melting temperature is not going to be a problem. Even the smallest hair dryer had more power than we needed. We'll keep you posted on upcoming sand casting classes.
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