[Jewelry making - Article 00535] - Re: [Orchid] Metalurgy of gold

[Daniel Ballard]

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    There are many spring golds. Some old formulas heat treat to a
    reasonable amount of spring without special additives. Our #75N/D
    alloy is one of the oldest, most understood alloys- basically half
    copper half silver. Use that to make 14 or 18kt as a simple one. If
    you need more spring than that you need something with an additive.
    Some use magnesium, some nickel, we have both. But it takes some
    experience to get the heat and the timing just right with any of
    them. We plan to make a video out of Gary Dawsons heat treating
    seminar at Kraftwerks this weekend.  We will have copies of the
    basics of the website fairly soon I think. Feel free to contact me
    next week when I get back to my desk at HQ. 

Daniel Ballard
WWW.Pmwest.us

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