[Jewelry making - Article 00347] - Re: [Orchid] Accidental Copper Plated Gold

[Noel Yovovich]

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>     I found that 30% nitric acid removed the copper in a few seconds. 

    Since it is copper you want to etch away, not silver, wouldn't it
    make more sense to use ferric chloride, which etches copper and not
    silver? Nitric acid etches silver like crazy-- why risk it? 

Noel
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