[Jewelry making - Article 00238] - Re: [Orchid] Fire scales after texturing

[Margaret Malm]

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    I have a different question re preventing fire scale: Will Prips work
    for copper too? I know this is a bit different sort of fire scale,
    but I have been working a bit with copper plus silver; and not being
    able to use (because of the silver) the nitric acid bath usually
    used for copper, I end up with the usual horrendous dark scale that
    can only be removed by sanding. 

Margaret

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