[Jewelry making - Article 00134] - Re: [Orchid] Tumbler turning jewelry black

[Roger Bowersox]

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    A warning about using lye (sodium hydroxide) on tumblers with
    aluminum parts. 

    The aluminum will develop lots of pits and holes is the lye is not
    completely cleaned off the aluminum. Remove the aluminum plate from
    the rubber lid gasket and clean it. 

    I use Sodium Bicarbonate (baking soda) to clean our tumbler barrels
    and stainless steel shot.
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