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I Forge Iron

Kiln building


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I am sure someone here has probably built a kiln before. I have Harold Hoffmans book with its plans for a minuscule kiln for heat treating pocket knife blades and springs. I also have David gingery’s “lil’ Bertha” book. Both are pretty old sources. I have elements, thermocouple bricks and a PID. The Hoffman kiln has an interior that is 2.5x4.5x4.5, which seems small. I have played with the bricks and have an arrangement that is 4.5x4x14. Is there anything I should be looking for in kiln size?  Also, I am not familiar with PID wiring. Is there a good guide anyone can recommend?

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If you're looking to fire pottery, I can maybe help with several types of primitive kilns. They work pretty well, although you'll have the occasional loss in the most modern of kilns. If you're talking about treating small blades and springs, I usually go with a toaster oven, as my wife gets upset when I use the kitchen oven for small stuff.

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