03-01-2007, 08:00 PM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
Posts: 3,887
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a diamond core drill lubricated with water would be ideal. second choice a silicone carbide hole saw. I saw this on the home tv network. drill through a synthetic sponge several times and leave the sponge up inside the hole saw fill the sponge with water then drill your hole at a low speed like with a cordless drill
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