Anyone have one of the Delta grinders (7", but I think one of the 6"
grinders may have it too) with the horizontal groove on the inside part
of the wheel guard that takes rests and other accessories? If so, I
wonder if you could measure it for me. Distance below centerline of
wheel, and distance inboard of wheel.
I picked up a Delta drill grinding jig that fits that grinder, and am
wondering where to mount it on a non-Delta grinder.
Hi John, I do have one of those grinders. I'll try to take a picture of
it tomorrow and see if I can get those measurements.
Do you have the paperwork that came with the drill grinder? I also have
that and can make a copy if you need it.
Thanks, John. I do have a copy of the manual for the grinding jig
which I downloaded from the OWWM website. I'd sure appreciate those
The jig is missing the rod with the ball handle and the drill length
stop which slides on it, but those don't appear to be critical and
should be easy to make.
Sounds like you have one of the drill jigs. How do you like it?
John: Did you receive the jpg copy of the owners manual c/w dimensions sent
to your email?
dist below centerline = 2.5" (7" grinder)
centerline of grinder wheel to inside face of slot (face closest motor)=1
I too have one of the Delta drill grinding attachments. I got it at a
flea market for $10. I think it's complete, but don't know for sure. I'd
appreciate a copy of the instructions if you can send them.
One option, if you have a FAX, is to send it to my attention at (810)
Or contact me at: firstname.lastname@example.org and we can negotiate other means
if that's more appropriate! Thanks,
Daniel A. Mitchell
Univ. of MI - Flint
John, I'm sorry I didn't make it to the shop like I thought I would. Do
I read that you have all you need now, or would you still like a
measurement and/or picture?
I have the drill attachment, but I will confess that I haven't used it.
I found it under a pile of junk in a used store. It was covered with
rust and I offered $1.00. It sat around my shop for a while. I wasn't
even sure what it was.
Later I attended a meeting in Dallas and across the street was a tool
store. I picked up a Delta catalog, and while thumbing through it,
there it was. Now I knew for sure it was a drill sharpener. From them
(or somewhere) I got a copy of the paperwork. A while later I stumbled
onto the Delta grinder. I traded a double barrel shotgun for it. I
shot the shotgun about once each 5 years. I use the grinder a lot.
Part of the excitement of finding the grinder is that it would fit my
I have a Drill Doctor, and it does a pretty good job, so the Delta
attachment hasn't made it to the top of the job pile yet. I think it
will probably do a better job than the Drill Doctor.
Hmmmm ... It seems the grinder in the manual offered is different than
the one I have. I suspect mine is an earlier model, and definitely a
Delta and not a Rockwell version.
The drill-holding portion (vise and drill feed mechanism) are nearly
identical, with the long metal actuating handle tipped by a black
plastic ball. This can be seen to produce the desired rotation action to
grind the drill tip as desired. So far so good.
However, the support portion of my device is totally different. It has a
cast protractor device (to set lip angle) below the swinging
drill-holding portion. That's quite different han depicted in the manual
presented, but understandable.
Below that is yet another rotating joint actuateded by a second long
metal handle with another black plastic ball at the end (much like the
one mentioned above). Thus the device has TWO long actuating levers.
This second 'motion' seems to apply (or retract) the drill to/from the
gringing wheel. However, there is NO detent or stop to control it, so
there is no way to determine if the drill is in the correct location, or
in ANY repeatable position.
Below this indeterminate 'motion' is a fork shaped cast iron mounting
lug device, but it's unclear in what the orientation it is intended to
be placed. It CANNOT be fastened to the inside of the grinding wheel
guard where the normal rest is positioned. That geometry would not allow
the grinding fixture to even reach the wheel. It seems to mount in some
plane perpendicular to the FACE of the grinder guard. NO grinder I know
of has ANY mounting face in that location.
Is anyone familiar with the older Delta drill grinders, how they worked,
and how they mounted?
Part of this sounds like the one down at school that is made by ,
or at least has the name on it, Atlas.
Does the feed for the bit have a "sort of" micrometer thimble?
and the bit holder is a "V" block clamp?
That description of a long handle with a black ball on the end
is what triggered this response.
Yes, that sounds exactly like it. The original responder offered a site
to get a .pdf file of the manual for the Rockwell drill grinder ...
This Rockwell grinder attachment is obviously some derivation (later,
most likely) of the Delta attachment that I have. SOME parts are the
same, exactly ... the rest is TOTALLY different.
It's quite possible that Atlas got into the act at some time too.