[Jewelry making - Article 01120] - [Orchid] Oxidizing silver & Patination tricks

[Mona Clee]

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    Hello all, Last Saturday I took a course on kum-boo at the Revere
    Academy in San Francisco, taught by the excellent Christine Dhein.
    The class learned a lot of interesting techniques, but one of the
    neatest tricks was Christine's demonstration of Kodak rapid selenium
    toner acting as an oxidizing/coloring agent on silver.  You can get
    a nice gray or black with the proper application of liver of sulfur,
    but you can also get rainbow colors if you're not careful (or if in
    fact that's what you intend to do).  The selenium toner imparted a
    beautiful matte gray as long as the depletion-gilded silver with the
    applied kum-boo was heated in warm water before being plunged
    briefly into the selenium solution. 

    I thought I'd read every article on kum-boo in existence (and a lot
    on patination in general) but I'd never heard before of using
    selenium in place of liver of sulfur.  Now I'm wondering, what other
    oxidzing/coloring tricks are out there that you only hear of by word
    of mouth?  (I'm slowly wading through Hughes' "The Coloring, Bronzing
    and Patination of Metals" but haven't seen anything about selenium in
    there). 

Mona


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