I needed a bench grinder,

I needed a bench grinder,

Joined: May 9th, 2005, 7:25 pm

March 9th, 2007, 2:39 pm #1

so I went to home depot and picked up a cheap one.
http://www.homedepot.com/prel80/HDUS/EN ... =100085223

The 8x1 inch wheels might be a little big for my needs, but it was cheap..

Now, where can I find a cheap wheel that can grind HSS cutting tools for my lathe??


Hehehe.. You might notice that I use the word 'cheap' a lot.
If you have a wife that works, you may understand..



Cheers,
Rich
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Joined: March 9th, 2007, 3:30 pm

March 9th, 2007, 3:38 pm #2

It probably came with a 60 and a 100 or 120

For HSS these are fine. Invest in a good diamond dressing point and use it often. Clogged wheels will burn a tool quick.




Flying chuck keys will make you st,st,st,st,studder!!
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Joined: May 9th, 2005, 7:25 pm

March 9th, 2007, 4:45 pm #3


I was having mostly good luck with the tool blanks,
but maybe some harder stuff is mixed in with the pile.

What's a good wheel for the harder tools?
One guy told me about a Green( silicon carbide?) wheel
for Carbide or Cobalt(?) tool grinding.







Cheers,
Rich
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Joined: January 7th, 2007, 1:03 am

March 9th, 2007, 8:39 pm #4

so I went to home depot and picked up a cheap one.
http://www.homedepot.com/prel80/HDUS/EN ... =100085223

The 8x1 inch wheels might be a little big for my needs, but it was cheap..

Now, where can I find a cheap wheel that can grind HSS cutting tools for my lathe??


Hehehe.. You might notice that I use the word 'cheap' a lot.
If you have a wife that works, you may understand..



Cheers,
Rich
In most instances unless your doing production work the cheap stuff gets you by just fine. Lots of different choices when it comes to grinding wheels you should be safe grinding on the wheels that came with it for HSS, make sure you cool the tool often while grinding as well. A Arkansas stone or India stone is great to use for honing and polishing the HSS so that it is nice and sharp. With so many different cutter materials used these days I would always make sure the grinding wheel referenced the material if its not plain jane steel when matching the two.


Dee

faee
etetg
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Joined: May 9th, 2005, 7:25 pm

March 9th, 2007, 9:03 pm #5

My new grinder seems to turn awfully fast..
I don't want to get a stone that's going to fly apart
and maybe hurt some old dude..


I've got one of those cheapo sanders that has a small
surface for a 6" sanding disk (adhesive type).
http://www.cumminstools.com/browse.cfm/4,146.htm

I never use the disk, just the belt, and I keep
it set in the upright position.

Maybe I can mod the disk to take one of the small
diamond wheel for sharpening the hard stuff.?.


Since the disk runs at a low RPM, it might be safer
than messing around with the grinder..

Cheers,
Rich
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Joined: February 17th, 2004, 3:07 am

March 9th, 2007, 9:38 pm #6

I would think maybe a variable resister inline on the cord might do it. Most of the bench grinders that I use to sell would run about 1750rpm. Rarely sold 8" though as the Baldors were too much money in that size. Buffers were usually 3450rpm.
Rob Prosio
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jke
Joined: November 3rd, 2001, 12:33 pm

March 9th, 2007, 9:39 pm #7

My new grinder seems to turn awfully fast..
I don't want to get a stone that's going to fly apart
and maybe hurt some old dude..


I've got one of those cheapo sanders that has a small
surface for a 6" sanding disk (adhesive type).
http://www.cumminstools.com/browse.cfm/4,146.htm

I never use the disk, just the belt, and I keep
it set in the upright position.

Maybe I can mod the disk to take one of the small
diamond wheel for sharpening the hard stuff.?.


Since the disk runs at a low RPM, it might be safer
than messing around with the grinder..

Cheers,
Rich
http://www.harborfreight.com/cpi/ctaf/d ... mber=46727

around $115 with the HF 30% coupon. use mine to surface finish small parts also.
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Joined: May 9th, 2005, 7:25 pm

March 9th, 2007, 10:41 pm #8

I think the sander disk mod would be a lot cheaper
and might even work better at low RPMs.

Cheers,
Rich
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Joined: May 9th, 2005, 7:25 pm

March 9th, 2007, 10:44 pm #9

I would think maybe a variable resister inline on the cord might do it. Most of the bench grinders that I use to sell would run about 1750rpm. Rarely sold 8" though as the Baldors were too much money in that size. Buffers were usually 3450rpm.
Rob Prosio
I have an old Triac speed control unit
off my old wood stove. It can control a fairly
large stove blower, so it might have the amps
to handle the grinder.. I'll have to track
that thing down.




Cheers,
Rich
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Joined: February 17th, 2004, 3:07 am

March 9th, 2007, 10:59 pm #10

.
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