[Jewelry making - Article 01183] - Re: [Orchid] Hammer handpieces

[Ian W. Wright]

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>     You should not exceed 5000 rpm going into a hammer handpiece. The
>     mechanisms that translate spin into impact are delicate, and burn
>     out at high speeds.

    On an almost unrelated matter, does anyone know how an air driven
    ultrasonic dental handpiece works? I assume it is virtually the same
    as a hammer handpiece but working at around 20,000 b.p.m. I had
    wondered whether the same system could be used with abrasive for
    drilling/carving stones. 

Best Wishes,

Ian
Ian W. Wright
Sheffield  UK


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