[Jewelry making - Article 00031] - [Orchid] Keum boo burnishing marks

[Bruce Raper]

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    Morning folks, After seeing a few orchid posts about Keum-boo a buddy
    of mine, who had a .03 mm 24k sheet, and I decided to try the process
    last week. What fun we had! After all the mystery around this
    process we found it so simple and successful...er almost. I saw
    Richard Mafong show someone how to do this years ago and but don't
    hardly remember a thing about the technique. The directions in the
    book Metals Technique (and I believe Charles Lewton-Brain's comments
    on Keum-boo support this too) say that the resulting burnishing marks
    may be removed from the surrounding silver by placing the finished
    piece in hot pickle. Our experience is that this doesn't remove the
    burnishing marks nor does it restore the the frosty white finish to
    the silver, which we like. 

    We were working in my friend's studio so I don't know how fresh her
    pickle is. My buddy had the idea that pumis powder might be the thing
    so I tried that (I have the finest grade pumis I believe, triple-F)
    with some oil on a soft cloth and this dulled the gold so much that
    its barely perceptible. I now suspect that multiple layers of the
    .03mm are required to get a stronger gold appearance.  As I remember,
    Richard Mafong didn't have any resulting burnishing marks. Did he
    avoid this by not going past the edge of the gold? Hmm. Any ideas
    anyone could give me for removing the burnishing marks and finishing
    would be greatly appreciated. 

    Also Charles Lewton-brain wrote that pieces may be soldered and
    formed AFTER kuem-booing. What are anyone's thoughts/experience on
    this? Is it best just to cold connect OR do all the fabrication
    before-hand? Thanks in advance for your consideration. Bruce Raper 
 

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