> If the carbide ones last longer, they'd
> be worth, but only
> if they lasted 4x as long. Is there some rough guideline for
> life expectancy of these
> bits? Certainly, 10 minutes was not what I had in mind; the bit
> was so dull at the
> end that it didn't even phase my work gloves...
Mike, I can't really answer your question, but I've got a set of cheap
carbide burrs (ISTR I paid under $30 for the set of 6 in a nice wood box,
either from Enco or HF) and they last a lot longer than 10 minutes. Can't
say for sure how long they do last ... I've never worn one out.
Biggest problem I have is that they're so aggressive, they're hard to
control.
Randall
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