[Jewelry making - Article 00372] - Re: [Orchid] Reuse Sterling Silver from flatware

[richard hart]

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>     This saves me the agony of applied mathematics and also prevents
>     potentially expensive mistakes due to math errors. It is in Open
>     Office format. If anybody wants it, I can e-mail it to them. 

    Lee, this is in Oppi Untract's book, and you just have to "zerox" the
    pages. It has several tables. Raising or lowering karats. One is for
    what  karat you have from .999 down to I think 10kt, and it has the
    percentage of what the pure gold is for whatever karat you need. 

    Basically you start with dividing what ever karat you need by 24,  
    18 kt is 18 divided by 24, or .75. If you need 10 grams of 18kt to
    cast with, 10 x .75=7.5 grams pure gold, 2.5 grams alloy. 

Richard Hart

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