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Old 08-25-2011, 09:40 PM
timothale timothale is offline
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Chip clearance hole

When drilling metal it's best to just start cutting to mark the hole location then get a small drill bit and drill a couple holes for the chips to exit, start a center punch just inside the ring then drill a hole thru then change to a bit to enlarge to the ring. If you don't clog the teeth with chips they cut faster cooler and last longer.
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