Thread: How can I drill a hole across a bolt?
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ckelly78z ckelly78z is offline
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Join Date: Jan 2012
Location: NW Ohio
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Flatten out the thread portion where you will be drilling, and peen the start of the hole. Use pressure and slow speed. I also use a cutting oil to keep the drill bit cool and cutting a nice curl.
Old 06-26-2018, 02:10 AM
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