[Jewelry making - Article 00409] - [Orchid] Oven Soldering For Sterling

[troy hines]

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Hi everyone,

    Does anyone know of any good resources on jewelry oven soldering?
    Books? Internet links? I am trouble-shooting a problem and in my
    research I have found very little useful information. 

    We keep our oven set at a constant temperature of 1500 deg F and
    regulate the solder flow by adjusting the belt speed. I am beginning
    to think that 1500 is way too hot for some applications, even with a
    faster belt speed, but do not want to reset the entire system
    without a bit of research. If my hunch is a failure, my colleagues
    will point and laugh, and it could be very expensive. Any tips from
    the marvelous brains out there? 

    Also, why would some of our sterling castings come out of the
    furnace with a pinkish color all over, and sometimes come out just
    fine? What is happening inside to bring so much copper to the
    surface? Is there some kind of possible contamination from our
    solder? Rotten batch of metal? Chemical reaction in the furnace
    atmosphere? Elves? Magic?


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