[Jewelry making - Article 00344] - Re: [Orchid] Using a tumbler

[John Donivan]

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    There is a nifty little book -"The art and science of automatic
    jewelry finishing." By James V. Stevens ISBN 0-9602386-0-3, that lays
    out the basics quite well. Mine is Copyrt. 1978 - hope is still in
    print. Quickly, though:  Use tumbling soap, even with SS shot (keeps
    dirt suspended, all clean, etc.)  Fill tumbler 1/3 - <1/2 with shot
    and work, add 1tsp. or so of soap (depends on soap brand), just
    (only) cover mix with water, and tumble for 4-8 hrs. depending on
    work. notes: you must have about 80% shot, 20% work or less, or work
    will just bang into each other. Raw castings will be cleaned up,
    filed, and emeried pieces can be just about finished up. (tumbling in
    shot does not give you a truly "finished" polish-there's no substitute
    for a hand-worked final)  Flat pieces don't tumble very well - if you
    don't remove at optimum time, will begin to get peened.  You need to
    keep sqweaky clean - run a work-less cleaning cycle, heavy on soap,
    frequently.  Dirty shot DOES NOT POLISH. Fill tumbler (as above) run
    for 1/2 hour, and open it.  You should have foam not quite to the
    top, and it should be pearly white. Lastly - these are guidelines-
    tumbling is an art-your own work, and needs, will determine your own
    procedures. Good Luck  John Donivan, SF, Ca.

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