Bench Grinder Lathe Tool Grinding Rest?

[MaverickNH]

The Grizzly G0687 Tool & Die Grinder looked like an amazing machine to grind lathe (and other) tools, but is a bit much for a home hobbyist, even if it wasn’t discontinued. A Northern unit, still available, costs $600 plus shipping - way to much! That said, such a grinder rest for my Delta 8” variable speed bench grinder looks very useful. I see that Grizzly still stocks & sells the lathe tool attachment but can’t tell which part is the attachment and which part is the main grinder unit. Might it be readily mounted to a base to use with a bench grinder?

My bench grinder is mounted on a pedestal and some DIY rests I’ve seen mount off the metal grinder disk guard, which itself is rather unsteady. I figure I could either mount the grinder on my bench and use a rest based off the bench, or just bolt a bigger plate on the pedestal as a mounting surface.

Are there any plans for such rests I might consider? I appreciate those who have developed hand grinding skills over years of learning, but would like to short-cut that with some jigs. I don’t have that many years left to develop such skills!

Lathe Tool Grinding Attachment at Grizzly.com

This Lathe Tool Attachment holds HSS and carbide lathe tools so they are properly centered and aligned at the desired height. No more guessing when it comes to regrinding your lathe tools! Fits the Model G0687 Tool and Die Grinder.

www.grizzly.com

 

[markba633csi]

Frankly I think it would take longer to fiddle around with that jig than just doing it by hand
But that's just my spill...

 

[C-Bag]

$150 for just that attachment? OUCH. It takes the rest of the tool grinder that is around $1000. I have yet to to use mine that I got with my Checkel and probably never will. I got a HFT knockoff 6” “carbide” grinder of a Baldor for $130 for the whole grinder. It has adjustable tables for the relief angles and a mitre gauge for cutter angles. Admittedly they can be kind of hard to find but so are Baldor carbide grinders and they are seldom under $4-500 around here. What about this:

Amazon.com

 

[MaverickNH]

$150 for just that attachment? OUCH. It takes the rest of the tool grinder that is around $1000. I have yet to to use mine that I got with my Checkel and probably never will. I got a HFT knockoff 6” “carbide” grinder of a Baldor for $130 for the whole grinder. It has adjustable tables for the relief angles and a mitre gauge for cutter angles. Admittedly they can be kind of hard to find but so are Baldor carbide grinders and they are seldom under $4-500 around here. What about this:

Amazon.com

That looks promising. With Amazon, I’d have 30d+ to give it a test to see if it held position w/o slippage under grinding load.

 

[C-Bag]

I bumped into this while one another search and was intrigued too. I have a 8” bench grinder with the garbage rests that needs an upgrade so I would appreciate your feedback.

 

[T Bredehoft]

See Maverick's post above, I bought one of those then copied it. I used the copy today to sharpen a wood chisel, did a beautiful job.

It takes a light touch, and time, but I got a perfect grind on a 1" wide chisel in what I consider a good time., though it may have been half an hour. Yes, after stoning it I could have shaved with it. Did a number on the mahogany piece I was working on.

 

[ChazzC]

That looks promising. With Amazon, I’d have 30d+ to give it a test to see if it held position w/o slippage under grinding load.

View attachment 468079

This doesn't look all that sturdy, and is intended for grinding/sharpening chisels, plane blades, etc.

Quinn (Blondiehacks) has a playlist of her Bench Grinder Tool Rest which looks pretty good, and can be modified to suit your bench grinder.

James (Clough42) also has a video on Improved Tool Rests for a 6" HF Bench Grinder. He has a link to download the drawings in the video description (no Patreon membership required).

If you want to go crazy, Eccentric Engineering has their Acute Sharpening System, which is available as a kit or just the drawings (Gary also builds a couple occasionally, but at a $400 premium).

I may make Jame's mods to my 8" Delta Bench Grinder to stiffen the stock tool rests, but so far I am good with things as they are:

 

[jwmay]

Building Harold Hall's Simple Grinding Rest

Starting this build thread to ask questions as well as help out anyone else out who might be thinking of building one. If you don't know who Harold Hall is, do a google search but he's an author of several machinist books and has a reputation for being a pretty smart fellow. He also has a...

www.hobby-machinist.com

 

[Jim F]

I use a 1x42 belt grinder, but had to use a 6" bench grinder before that, rest was just used to stabilize, not for forming any angles....

 

[Jake M]

This more of an idea/approach suggestion than anythng, there's no plans and I'll bet you don't randomly have a half of a band saw table kicking around. I made it for something totally different thing. The finger plate was crudely made for a similar tool grinding reason, on a "factory rest" on a different cheap grinder. But I'm really liking this combination. I can set the finger plate on a thin parallel if I need more clearance angles, but it's usually fine. I can "protractor" a sharpie mark onto the table if I want a specific angle, and the finger plate makes it quite easy to judge off of that line. Maybe you've got something lying around that you could spin an idea off of this?

Just tossing it out there. I like it, It makes good lathe tools, but it's sure as heck not gonna replace a tool and cutter grinder........