[Jewelry making - Article 00190] - Re: [Orchid] Realistic rocks drilling

[MJOAT]

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    If they are any type of rock that is softer than a 9 (carbide) on
    the Mho's scale you can head to the hardware store and pick up a
    concrete carbide tip drill bit. They come in sizes from 1/8" up. If
    you have a drill press so much the better a plastic pan filled with
    water to cover the stone. Mostly to keep the dust down. You probably
    wouldn't need a 1/2 inch peg to hold the stone up with a good epoxy.
    Any thing from a couple of 1/8" dia holes to 1/4" would work. 

    Then use a metal instead of a wood peg, to mount the rock on. The
    carbide bits are a lot cheaper, than the diamond bits sold at the
    supply houses. And they will with some the addition of some water.
    Drill just about most stones out there. I have drilled thru any
    number of minerals and marble and granite types. 

    After all they are using all that kind for the overpriced counter
    tops and they have to get a starter hole in them some how for the
    sink cut out. 

    The water will not only keep the dust down but will act as a
    coolant. Heat is probably the biggest destroyer of stones when
    drilling. Just remember to lift the bit to clean the hole and let
    fresh water in often. 

glen
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