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My furnace, its crumbling a little due to my poor homemade refractory.
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The beginnings of my crucible.
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Finished crucible, nice thick metal (it's about 5mm thick)
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Fish casting pattern nearly finished.
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The sand mold ready for casting.
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The other half of the sand mold. |
The finished casting, it took two tries to get the right the first one (below) had a shrink cavity that made it look a bit anorexic.
Casting gone bad, it has a shrink cavity.
The finished casting.
The Oil Burner
The furnace burns wast vegetable oil, to do this I built this simple oil burner. It's simply a copper coil imbedded into a refractory lining. The end of the pipe is hammered into a small nozzle for the oil to drip through. The very base is filled with Perlite.
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Perlite lining in the base of the pan. The pan is just an old stainless steel cooking pan.
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This is the copper preheat coil.
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Refractory lining. The lining is made from bentonite clay and sharp sand. I followed the instructions by Dave Gingery for this refractory.
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Before the burner is used it must be preheated using coal or wood.
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Testing the flame! This is on the lowest oil flow setting, which is controlled by the little flow valve you can see in the bottom left.
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