[Jewelry making - Article 00557] - Re: [Orchid] Drilling investigated

[Peter Deckers]

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>     The problem was always solved by using jewelers saw with 8.0
>     blade. Whatever inaccuracies that may arise out of this approach
>     are diminishing with practice and easily corrected when bearing is
>     cut. 

    After this method a precise ball burr will do the trick. I have the
    whole sequential series from 5 mm to.4 mm with a.1mm step difference
    for getting holes to the right size (from Fisher). My broach pins are
    more rusting away then used; with this precise series no need for
    them anymore. 

Peter Deckers
New Zealand
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