In Veeduber wrote:

The truth is, most homebuilders are using dull drills, having the
wrong angle, chucked into a K-Mart Blue-Light special turning maybe
1200rpm. I've no idea if they are using plain carbon steel or
nitrided cobalt -- and neither do they. But I do know that if they
are making bad holes the SFM formula I cited will PROBABLY help them
make better ones.

I guess I just associate with a higher class of homebuilders over on the
Bearhawk list. 8^) We don't typically get into drill speed formulas
but for the most part we all use decent tools. Then again, there are
enough holes to drill in the BH wing that using the K-mart special would
almost certainly drive the user completely insane in short order.

----------------------------------------------------
Del Rawlins-
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