Thread: How to Make a Clean Hole with 1 1/8" Dill Bit?
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Unread 08-03-2014, 22:01
AlexH AlexH is offline
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Re: How to Make a Clean Hole with 1 1/8" Dill Bit?
i'd start with something like a #4 center drill go up to a 1/2" , then a 3/4" and then the 1 1/8.

also check your RPM against this SMF calculator. you might be going too fast or slow.
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