[Jewelry making - Article 00280] - Re: [Orchid] [Source] Opal cylinder

[Kevin P. Kelly]

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    Thanks for all the responses. Every response provoked a reflection on
    my part; and I learned from each. 

    Mark at 'fourth axis' suggested the 'Centerless Grinding' process. I
    had never heard of "centerless grinding". I followed through on the
    suggestion and went to MSSOnline and found a straight forward
    description and a very helpful visual. 

    That and Mark's detailed description have inspired me. No hands
    needed! 

    I have a 'Cabmate" and an fixed arbor from Diamond Pacific. I'm going
    to try to set up a centerless lapidary grinding unit using a 6" x 1 &
    1/2" wheel and the fixed arbor. The wheel rotates downward or
    counterclockwise while the arbor surface rotates clockwise rotation
    on the fixed arbor I would think. That should keeps the stone in
    place. First, of all, I'll preform the cylinder on my faceting
    machine. 

    Of course I'm going to use another material before I go to the opal. 

    I'll post the stages of this venture as I go along. But I'm also
    preparing for two upcoming shows. 

Thanks again
KPK
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