On 2009-08-11, rangerssuck wrote:

[ ... ]

And hey, wait a minute! the Drill Doctor is an example of a machine
DESIGNED to grind HSS with a diamond wheel. I've done hundreds of bits
on mine, including a couple of broken ones that needed a lot of
grinding, and the wheel still cuts fine.

Well ... the diamond wheel on the Drill Doctor is something like
1" diameter. I forget what the RPM was, from which we could calculate
the SFM -- but I have always wondered about the choice of diamond for
that. I think that it was mostly so they could also sharpen the carbide
masonry drills. :-)

I could go downstairs and set up the StroboTac again, but I am
under doctor's orders to not work machine tools until tomorrow.

Enjoy,
DoN.

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