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Old 11-23-2019, 08:47 PM   #2
Getter-Done
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Join Date: Dec 2009
Location: TN.
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Re: Used Craftsman drill and bits

Those drills with that drill holder was used for Bronze, Brass and Aluminum.
Bronze and brass tend to pull a regular twist drill into the work-piece quicker than a person can control. Those straight flute drills don't make that long stringy chip.
A trick to use a twist drill on non-ferrous material is to dull the sharp edges a little so it won't pull in as bad.










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