Or, buy/build a forge burner for more efficient flame. Look into the torch used for burning weeds for a larger flame, they can work pretty well. Torch the outside for a few minutes to heat it up some then point the torch into it. The new crucible was for sure absorbing too much heat. Once we refine our melting techniques, we've got some casting sand we can make cool stuff with. Maybe it's just soaking up too much heat? We can try pointing the torch into the crucible next time? The crucible I got was about twice the size of most of the ones I found online. Torch is blowing at the bottom and all it did was bleach the cans. Our furnace was much better than before, though still not sealed. It didn't work! We spit fire at this thing for about 4hrs while drinking around a fire and nothing melted. 12kg graphite crucible (legit and freaking big).Melted about 15-20 cans before our coffee can gave out again. We collected some firebricks we found and acquired a propane torch.Īlso worked! We just stacked bricks as tightly as we would. While being super inefficient, it worked! We melted a bunch of soda cans and frantically attempted to pour them into our mold (a muffin tray) when the bottom of our "crucible" gave out.
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