[Jewelry making - Article 00354] - Re: [Orchid] Vibratory vs. Rotary Tumbling

[Judy Hoch]

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>     I just did my first real round of casting and tumble polished the
>     pieces w/ ceramic media and steel shot in rotary machines....but
>     just picked up a nice little wet/dry Vigor 3 qt machine on ebay
>     today. How would you compare vibratory vs rotary? What works
>     better for which media? I know time is reduced on the vibratory
>     machine. Someone said rotary is better for steel shot? 

    Jeanne - the vibratory wet/dry machine is far superior for the
    grinding abrasive process. You can wash away the junk with the flow
    thru, it's quicker than the rotary for the abrasives by a factor of
    10. 

    On the other hand, the rotary is used for the steel primarily as a
    matter of economics. You can move a lot of steel with a relatively
    inexpensive machine. You can certainly use a vibratory for steel,
    but it needs to be rated for steel and that makes for an expensive
    machine, to say nothing of the cost of buying enough steel to fill
    the thing. 

    There's a fair amount of detail to this tumbling thing. My book
    "Tumble Finishing for Hand Made Jewelry" supplies a lot more detail.
    Available from Rio Grande, Otto Frei, Alpha supply, Gesswein and
    others. 

Judy Hoch
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