Gunner Asch wrote:

Any plans out there for a doityourself grinding wheel radius dresser?

A lot of dressers go cheap on Ebay.

Look at the typical ball turning attachment for ideas if you want to DIY.

Wes

Any plans out there for a doityourself grinding wheel radius dresser?

Gunner, puttering with the KO Lee T&C grinder

On Feb 14, 5:57*pm, Gunner Asch wrote:
Any plans out there for a doityourself grinding wheel radius dresser?

Gunner, puttering with the KO Lee T&C grinder

I don't like to grind tap flutes with a rounded wheel edge because it
quickly breaks down right along the cutting edge, unless the wheel is
thinner than the width of the flute groove and cuts as it enters or
leaves instead of tangentially. Then its shape doesn't really matter
much, like a chain saw sharpener.

Actually a cylindrical Dremel stone slightly smaller than the groove
diameter does a good job. I run the end of the stone down the groove
to guide it and twist it slightly so it grinds the cutting edge of the
flute. The stone cuts crosswise to the edge and wear doesn't leave a
step.

This only roughs the edge to shape and doesn't control diameter
exactly, but then you can grind the OD of the tap between centers with
a spring finger against the newly ground flute groove. I got good
results from a flat rather than circular relief. You can use the taper
of the remaining thread grooves to estimate the relief behind the
cutting edge.

Hope that's clear.

Jim Wilkins

On Sat, 14 Feb 2009 14:57:20 -0800, Gunner Asch
wrote:

Any plans out there for a doityourself grinding wheel radius dresser?

Gunner, puttering with the KO Lee T&C grinder


-----------
What sort of accuracy and sizes [wheel diameter and corner radii]
are you looking for? I may be able to find locate some plans
that use an inexpensive spindex for the spindle. The arm that
holds the dresser has a stub that mounts in a 1 inch 5C collet in
the spindex. No Schmidt,
https://www.hschmidt.com/productcart...&idproduct=170
but it does pretty good.
base spindex like this
http://www.use-enco.com/CGI/INSRIT?P...&PARTPG=INLMK3


Unka' George [George McDuffee]
-------------------------------------------
He that will not apply new remedies,
must expect new evils:
for Time is the greatest innovator: and
if Time, of course, alter things to the worse,
and wisdom and counsel shall not alter them to the better,
what shall be the end?

Francis Bacon (1561-1626), English philosopher, essayist, statesman.
Essays, "Of Innovations" (1597-1625).

"F. George McDuffee" wrote in message
...
On Sat, 14 Feb 2009 14:57:20 -0800, Gunner Asch
wrote:

Any plans out there for a doityourself grinding wheel radius dresser?

Gunner, puttering with the KO Lee T&C grinder


-----------
What sort of accuracy and sizes [wheel diameter and corner radii]
are you looking for? I may be able to find locate some plans
that use an inexpensive spindex for the spindle. The arm that
holds the dresser has a stub that mounts in a 1 inch 5C collet in
the spindex. No Schmidt,
https://www.hschmidt.com/productcart...&idproduct=170
but it does pretty good.
base spindex like this
http://www.use-enco.com/CGI/INSRIT?P...&PARTPG=INLMK3


Unka' George [George McDuffee]
-------------------------------------------

Yep you mount a small straight shank boring head in the collet fixture with
round shank diamond.
Works almost as good as the schmidt.

Best Regards
Tom.

On Sat, 14 Feb 2009 20:09:16 -0800, "AZOTIC"
wrote:


"F. George McDuffee" wrote in message
.. .
On Sat, 14 Feb 2009 14:57:20 -0800, Gunner Asch
wrote:

Any plans out there for a doityourself grinding wheel radius dresser?

Gunner, puttering with the KO Lee T&C grinder


-----------
What sort of accuracy and sizes [wheel diameter and corner radii]
are you looking for? I may be able to find locate some plans
that use an inexpensive spindex for the spindle. The arm that
holds the dresser has a stub that mounts in a 1 inch 5C collet in
the spindex. No Schmidt,
https://www.hschmidt.com/productcart...&idproduct=170
but it does pretty good.
base spindex like this
http://www.use-enco.com/CGI/INSRIT?P...&PARTPG=INLMK3


Unka' George [George McDuffee]
-------------------------------------------

Yep you mount a small straight shank boring head in the collet fixture with
round shank diamond.
Works almost as good as the schmidt.

Best Regards
Tom.

------------
Fantastic suggestion.

Gunner is sure to have a boring head, and a 1 inch straight
shank adapter is available from Enco fo 20$
http://www.use-enco.com/CGI/INPDFF?P...MITEM=893-2049

Fabricate a holder with a 15% slant for the diamond dresser and
be good to go. Use 1 inch sq steel (?) and turn a 1/2 diameter
shank to fit the boring head.

Makes me want to run out to the shop and get started. Where's
that 4 jaw chuck? If I only has a surface grinder...

I notice that the radius diamond dressers are 2X-3X as expensive
as the phono point tools. Any difference for low volume use?
Also see that the phono point dressers have 60, 70, and 90 degree
points. Whats the difference for the home shop?
http://www.use-enco.com/CGI/INPDFF?P...MITEM=398-8535

If you do this Gunner, be sure to let the group know how you make
out, with pictures in the dropbox.


Unka' George [George McDuffee]
-------------------------------------------
He that will not apply new remedies,
must expect new evils:
for Time is the greatest innovator: and
if Time, of course, alter things to the worse,
and wisdom and counsel shall not alter them to the better,
what shall be the end?

Francis Bacon (1561-1626), English philosopher, essayist, statesman.
Essays, "Of Innovations" (1597-1625).

On Sat, 14 Feb 2009 20:59:17 -0600, F. George McDuffee
wrote:

On Sat, 14 Feb 2009 14:57:20 -0800, Gunner Asch
wrote:

Any plans out there for a doityourself grinding wheel radius dresser?

Gunner, puttering with the KO Lee T&C grinder


-----------
What sort of accuracy and sizes [wheel diameter and corner radii]
are you looking for? I may be able to find locate some plans
that use an inexpensive spindex for the spindle. The arm that
holds the dresser has a stub that mounts in a 1 inch 5C collet in
the spindex. No Schmidt,
https://www.hschmidt.com/productcart...&idproduct=170
but it does pretty good.
base spindex like this
http://www.use-enco.com/CGI/INSRIT?P...&PARTPG=INLMK3

Actually...I really dont know what I need. Ive got some 40 or more
grinding wheels of all types, some as thin as 3/16", and I figure I need
a radius dresser to get between the flutes of shell mills, taps and so
forth. I figure "close" is good, but Im not likely to be grinding
maching grooves in things that need to be .00001

Just sharpening cutters of all sorts that have round gullets

Gunner



Unka' George [George McDuffee]
-------------------------------------------
He that will not apply new remedies,
must expect new evils:
for Time is the greatest innovator: and
if Time, of course, alter things to the worse,
and wisdom and counsel shall not alter them to the better,
what shall be the end?

Francis Bacon (1561-1626), English philosopher, essayist, statesman.
Essays, "Of Innovations" (1597-1625).

"Upon Roosevelt's death in 1945, H. L. Mencken predicted in his diary
that Roosevelt would be remembered as a great president, "maybe even
alongside Washington and Lincoln," opining that Roosevelt "had every
quality that morons esteem in their heroes.""

On Sat, 14 Feb 2009 20:09:16 -0800, "AZOTIC" wrote:


"F. George McDuffee" wrote in message
.. .
On Sat, 14 Feb 2009 14:57:20 -0800, Gunner Asch
wrote:

Any plans out there for a doityourself grinding wheel radius dresser?

Gunner, puttering with the KO Lee T&C grinder


-----------
What sort of accuracy and sizes [wheel diameter and corner radii]
are you looking for? I may be able to find locate some plans
that use an inexpensive spindex for the spindle. The arm that
holds the dresser has a stub that mounts in a 1 inch 5C collet in
the spindex. No Schmidt,
https://www.hschmidt.com/productcart...&idproduct=170
but it does pretty good.
base spindex like this
http://www.use-enco.com/CGI/INSRIT?P...&PARTPG=INLMK3


Unka' George [George McDuffee]
-------------------------------------------

Yep you mount a small straight shank boring head in the collet fixture with
round shank diamond.
Works almost as good as the schmidt.

Best Regards
Tom.

AH!!!! Excellent thinking outside of the box!!!!

Thank you!!!

Ill try that will a Yausu spin indexer Ive got.

Gunner

"Upon Roosevelt's death in 1945, H. L. Mencken predicted in his diary
that Roosevelt would be remembered as a great president, "maybe even
alongside Washington and Lincoln," opining that Roosevelt "had every
quality that morons esteem in their heroes.""

On Sat, 14 Feb 2009 23:49:10 -0600, F. George McDuffee
wrote:

On Sat, 14 Feb 2009 20:09:16 -0800, "AZOTIC"
wrote:


"F. George McDuffee" wrote in message
. ..
On Sat, 14 Feb 2009 14:57:20 -0800, Gunner Asch
wrote:

Any plans out there for a doityourself grinding wheel radius dresser?

Gunner, puttering with the KO Lee T&C grinder


-----------
What sort of accuracy and sizes [wheel diameter and corner radii]
are you looking for? I may be able to find locate some plans
that use an inexpensive spindex for the spindle. The arm that
holds the dresser has a stub that mounts in a 1 inch 5C collet in
the spindex. No Schmidt,
https://www.hschmidt.com/productcart...&idproduct=170
but it does pretty good.
base spindex like this
http://www.use-enco.com/CGI/INSRIT?P...&PARTPG=INLMK3


Unka' George [George McDuffee]
-------------------------------------------

Yep you mount a small straight shank boring head in the collet fixture with
round shank diamond.
Works almost as good as the schmidt.

Best Regards
Tom.

------------
Fantastic suggestion.

Gunner is sure to have a boring head, and a 1 inch straight
shank adapter is available from Enco fo 20$
http://www.use-enco.com/CGI/INPDFF?P...MITEM=893-2049

Fabricate a holder with a 15% slant for the diamond dresser and
be good to go. Use 1 inch sq steel (?) and turn a 1/2 diameter
shank to fit the boring head.

Makes me want to run out to the shop and get started. Where's
that 4 jaw chuck? If I only has a surface grinder...

I notice that the radius diamond dressers are 2X-3X as expensive
as the phono point tools. Any difference for low volume use?
Also see that the phono point dressers have 60, 70, and 90 degree
points. Whats the difference for the home shop?
http://www.use-enco.com/CGI/INPDFF?P...MITEM=398-8535

If you do this Gunner, be sure to let the group know how you make
out, with pictures in the dropbox.

Indeed I will!!

Gunner



Unka' George [George McDuffee]
-------------------------------------------
He that will not apply new remedies,
must expect new evils:
for Time is the greatest innovator: and
if Time, of course, alter things to the worse,
and wisdom and counsel shall not alter them to the better,
what shall be the end?

Francis Bacon (1561-1626), English philosopher, essayist, statesman.
Essays, "Of Innovations" (1597-1625).

"Upon Roosevelt's death in 1945, H. L. Mencken predicted in his diary
that Roosevelt would be remembered as a great president, "maybe even
alongside Washington and Lincoln," opining that Roosevelt "had every
quality that morons esteem in their heroes.""

On Feb 15, 2:53*am, Gunner Asch wrote:
On Sat, 14 Feb 2009 20:09:16 -0800, "AZOTIC" wrote:

"F. George McDuffee" wrote in message
.. .
On Sat, 14 Feb 2009 14:57:20 -0800, Gunner Asch
wrote:

Any plans out there for a doityourself grinding wheel radius dresser?

Gunner, puttering with the KO Lee T&C grinder

-----------
What sort of accuracy and sizes [wheel diameter and corner radii]
are you looking for? *I may be able to find locate some plans
that use an inexpensive spindex for the spindle. *The arm that
holds the dresser has a stub that mounts in a 1 inch 5C collet in
the spindex. No Schmidt,
https://www.hschmidt.com/productcart...ategory=15&idp....
but it does pretty good.
base spindex like this
http://www.use-enco.com/CGI/INSRIT?P...O=950007&PARTP...

Unka' George [George McDuffee]
-------------------------------------------

Yep you mount a small straight shank boring head in the collet fixture with
round shank diamond.
Works almost as good as the schmidt.

Best Regards
Tom.

AH!!!! * Excellent thinking outside of the box!!!!

Thank you!!! *

Ill try that will a Yausu spin indexer Ive got.

Gunner

The trick there is measuring and adjusting the offset accurately. I
think you could make a setting block or assemble a gage block stack at
center height and measure small radii for tap grooves with feeler
gauges. I haven't tried that one yet because I can't remove the
tapered adapter from my surface grinder and don't swap wheels unless
absolutely necessary.

I did make a tailstock from a piece of 0.500 drill rod fitted into a
steel block that bolts to an angle plate. I set it at center height by
clamping the drill rod in a collet. It would make a fairly good height
reference to set a radius dressing diamond with a ruler and magnifier
to within 5 or 10 thousandths, about as close as you can determine the
size of the groove in a tap.

Jim Wilkins

On Feb 14, 5:57*pm, Gunner Asch wrote:
Any plans out there for a doityourself grinding wheel radius dresser?

Gunner, puttering with the KO Lee T&C grinder

Echoing what someone else said, keep your eye on eBay. I picked up a
Yuasa dresser there a while back, for less than $35 including
shipping. The good thing about the dressers are that most of them are
radius and angle dressers - you can do one or the other or a
combination of the two.

John Martin