Drill bit question
"SteveB" wrote in message
...
I bought a bunch of drill bits at yard sales recently. Some only have
flutes about a third of the way up the shaft, then clear shaft. They're as
long as normal bits, so they haven't been resharpened until becoming that
short. Can someone explain these to me?
Steve
They're called "Kaufmann" drills. I don't know how I know that.
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