On 2009-08-11, Ignoramus17579 wrote:
On 2009-08-11, Calif Bill 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

[ ... ]

The wheel in Drill Doctor is not diamond, it is CBN.

That may depend on when it was made. Mine came with a diamond
wheel according to the maker. And I ordered a spare when I got mine.

Enjoy,
DoN.

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