[Jewelry making - Article 01426] - Re: [Orchid] Inert environment in the kiln

[David L. Huffman]

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Hello Giedrius;

    The first mokume I made was done in a gas kiln, back in 1989. We were
    using copper, nickel and brass, which are more reactive to oxidation
    than gold alloys, so it would work fine for gold, I would think. I
    was at a conference in Buffalo that Bradney Simon put together and
    while there, I saw someone demonstrating a simple, small gas forge
    designed for knife makers. I think that you could build something
    like that with a large coffee can lined with fiber-frax insulation
    and fired with a hardware store propane torch pointing into a hole in
    the side of the canister. You'd want a pyrometer, and it might be a
    bit tricky to hold the temperature evenly, but if you can keep the
    billet at 1350 degrees Fahrenheit for an hour, you can bond most
    alloys. As long as there is a reducing atmosphere, you won't need
    charcoal or a shielding gas. 

David L. Huffman
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