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Old 05-31-2023, 05:49 AM   #8
special-K
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Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,863
Re: Killer Drill Bit?

This bolt is also recessed into the block, so no flattening. I'm hoping once I get an 1/8" pilot hole I can move up in size with left hand bits. Those are Harbor Freight, so hopefully can at least bite in enough to spin the bolt shank. I'll order up one of those bits from McMaster.

Those step-tip bits are interesting. I'll look at those, too
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