[Jewelry making - Article 00522] - [Orchid] Casting Cleanup

[Todd Welti]

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    Hi Ganoksin, I have a cast sterling silver piece that has some
    traces of casting investment still in it. Perhaps I did not smooth
    the wax sufficiently before sending it out to cast. Anyway, i can't
    get the stuff out of some of the smaller details without removing the
    detail. I tried scrubbing with toothbrush, brass wire brush (removes
    detail if i use it on my flexshaft, or doesn't work if by hand).
    Someone suggested using an ultrasound, so i ordered one. haven't
    tried it yet... 

Any suggestions?
thx
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