On 2009-08-11, Calif Bill wrote:

"Ignoramus17579" wrote in message
...
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.

[ ... ]

I seem to remember mine said diamond. Unfortunately I loaned to someone.
Can not remember who I loaned it to. So may buy the one that does split
points.

Note that while it does split points fairly well on *larger*
bits, it is close to useless doing 3/16" bits or smaller. I was having
great problems with mine, someone else in the club was posting that it
was doing a great job, so we both brought ours to the club meeting so he
could try mine and vice versa. I brought along a drill bit of the size
I was trying, and he brought along one of the size he was trying (1/2"
or so, IIRC)

Well ... he was able to do a nice job on his bit in my DD, but
not able to do anything reasonable with my drill bit (3/16" or 1/4")
with either DD.

http://www.drilldoctorstore.us/drilldoctor.html Describes it as a diamond
wheel

As I remembered from back when it came from the original maker.

All of them at that site look different from the one I have,
which is from the first maker.

Enjoy,
DoN.

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