Carbide tool grinders.

[Highpower]

(02-02-2013, 10:56 AM)stevec Wrote: ... but then, I am blessed with the Baldor version (Thanks again Claude).

Steve,

Enco numbers

Resin bonded:
317-1067 for the 1/2" wide face (220 grit)
317-1070 for the 3/4" wide face (220 grit)

Electroplated:
391-5640 for the 3/4" wide face (220 grit)
307-3449 for the 1" wide face (220 grit)

[arvidj]

(02-02-2013, 12:38 AM)Highpower Wrote: Arvid, stick with the 220 grit wheel and go at it gently.

...

Carbide ONLY on the diamond wheel. If you want to grind HSS as well, get a white wheel for the other side.

Willie,

Thanks for the excellent advice.

I will plead ignorance ... in this case a very legitimate plea ... but what is a "white wheel"? I assume it is a composite wheel that is white, but a composition of what?

Thanks,
Arvid

[Highpower]

Sorry Arvid, my bad. Aluminum Oxide.

[arvidj]

(02-02-2013, 11:44 AM)Highpower Wrote:

Sorry Arvid, my bad. Aluminum Oxide.

No problem. It is probably common knowledge but I seem to lack both lately.

Do you have a recommended grit or grits for an Aluminum Oxide wheel for HSS bits?

[stevec]

(02-02-2013, 11:44 AM)Highpower Wrote:

Sorry Arvid, my bad. Aluminum Oxide.

I believe Aluminum Oxide would be the description from a reckognized abrasives manufacturer. "white wheel" is more likely the term used by places like Horror Fright, as even they probably don't know what the composition of their product actually is.

Arvid, I have a 60 grit Alu Ox wheel and I really appreciate how it works on HSS. So much better than the greyish mystery abrasifs that come with the grinders.
I'm was planning on getting a 100 or 120 grit wheel to use as a "Finishing wheel" but maybe I should go right to 220?

[sasquatch]

I think some of those imported grinding wheels are made from ground up bricks!! Lol

[EdK]

(02-02-2013, 04:29 PM)sasquatch Wrote: I think some of those imported grinding wheels are made from ground up bricks!! Lol

The green ones that came with my HF grinder certainly match that description.

Ed

[Highpower]

(02-02-2013, 01:01 PM)arvidj Wrote: Do you have a recommended grit or grits for an Aluminum Oxide wheel for HSS bits?

Arvid, I am using a 46 grit wheel on the grinder for roughing out HSS tool blanks. And even that seems to take forever.

   

For finishing and touch-up I use my belt sander which usually has a 180 grit belt on it. I have finer grit belts as well but they never seem to make it onto the grinder.

If I had the room and the money, I would have a second grinder with finer wheels instead.

The green wheels that came with my grinder looked like they were made from the stuff that gets washed out of a cement mixer at the end of the day, with a little Krylon thrown on for color.
Those went straight from the box to the trash can.

[EdK]

It's difficult to find a variety of grits of AO grinding wheels to fit these grinders. I think mine is also 46 grit. That's the only one I could find.

Ed

[Highpower]

MSC has an 80 grit wheel, but now that you mention it - I don't recall seeing anything finer.

http://www1.mscdirect.com/CGI/NNSRIT2?PM...M=88791025