[Jewelry making - Article 00815] - Re: [Orchid] Graver Meister Pneumatic Stone setting

[Dave]

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Hi Thomas,

>     Does the item being worked on need to be locked in a very rigid
>     position, like in the GRS devices or can it be hand held in a ring
>     clamp?  The person suggested the item must be very rigid for the
>     pneumatics to work with out problems. 

    I'd suggest that the more rigid the piece being worked on can be
    help the better, regardless of whether it's being manipulated by
    machine or by hand. 

    If the piece isn't rigid, any movement reduces the effectiveness at
    the point of contact between the tool & the work. The piece needs to
    be stationary for the tool to make an effective mark. Any movement
    of the piece is just lost motion. Maybe all that lost motion
    contributes to the wear & tear on the wrists, fingers & arms that
    causes our aches & pains. 

Dave

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