[Jewelry making - Article 00073] - [Orchid] Silver Copper coating removing tip

[Joseph]

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    We sometimes use it to remove the copper coating from silver that
    has been accidently pickled in an iron contaminated bath by a
    student.  

    1/2 Cup Hydrogen peroxide (3%) (same stuff they sell in the drug
    store) 

    1 Tablespoon FRESH Sparex solution pickle or sulferic acid pickle
    (5-10%) 

    Warm the peroxide up to 190 to 200 degrees, a small crock pot works
    fine. Now add the tablespoon of FRESH pickle. Do not add more pickle,
    this is only a catalyst. Place the items to be pickled in the warm
    peroxide solution and agitate with a feather or plastic spoon. The
    peroxide will bubble and this lets you know it is working. Check the
    progress of your items after a minute, it won't take long.  

    Afterwards let the peroxide solution cool and store it in a dark
    brown bottle. The solution is still good as long as it bubbles when
    used.  No bubbles, the solution is spent. Neutralize it with baking
    soda to dispose of the solution. 

Happy Metalsmithing
Joe B. 

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