[Jewelry making - Article 00124] - Re: [Orchid] PnP changing color

[michaela]

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>     Does anyone have the recipe for the Muriatic Acid / Peroxide mix? 

    First of all: this mix will not etch silver! but it is very fast on
    copper. 

    When I use it I mix 1 part 35% peroxide (H2O2), 1 part conc.
    hydrochloric acid (HCl) into 3 parts water. If you're used to ferric
    chloride this mixture is several times faster on copper. It is very
    corrosive. As always, if you don't know what you're doing - don't do
    it. 

michaela
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