[Jewelry making - Article 00251] - Re: [Orchid] Tumbling Hardening and Polishing

[Judy Hoch]

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Matthias

>     This is what I would like to do: After sanding, smoothing my pieces
>     (14k or 18k gold, maybe platinum) and giving them an intermediate
>     polishing step I would like to work harden them by tumbling them
>     with stainless steel shot in a rotating barrel. Do you think it is
>     necessary to give tumbled pieces a last polishing step to finish
>     them? Do I loose the hardening effect when I polish my pieces with
>     a very fine grit? 

    - You can harden your work at any time during the finishing process.
    And you can't undo the hardening, unless you heat the work. Tumbling
    with steel gives a burnished effect that you may wish to refine with
    a final polishing step. If I wish to have a refined high polish after
    burnishing with steel, I run the work for a day or two in a vibratory
    tumbler with some kind of charged dry media - rouge charged walnut
    shell for example. 

Judy Hoch
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