Grizzly 2X42 grinder

Mine arrived yesterday. I couldn't pass up the deal as an upgrade for the HF 1x30. Gotta give it to the little HF grinder. It's still ticking after a lot of years of farm repair abuse.

After a brief check-up and setup, I went about knocking down a few spots on a 52100 knife I just forged out of a chunk of bearing race. The OEM 120 grit belt was not up to the task, lol. I leaned on the grinder pretty hard just to feel what kind of power and flex it had, and it wasn't that bad. I'm just starting with this hobby, and I'm sure it will be adequate for me with some decent coarse grit belts, a narrower platen and a larger rest. I have been eyeballing the small wheel attachment made by a member here, and have conceptually designed a small surface grinder jig.
 
deputyrpa said:
Mine arrived yesterday. I couldn't pass up the deal as an upgrade for the HF 1x30. Gotta give it to the little HF grinder. It's still ticking after a lot of years of farm repair abuse.

After a brief check-up and setup, I went about knocking down a few spots on a 52100 knife I just forged out of a chunk of bearing race. The OEM 120 grit belt was not up to the task, lol. I leaned on the grinder pretty hard just to feel what kind of power and flex it had, and it wasn't that bad. I'm just starting with this hobby, and I'm sure it will be adequate for me with some decent coarse grit belts, a narrower platen and a larger rest. I have been eyeballing the small wheel attachment made by a member here, and have conceptually designed a small surface grinder jig.
Click to expand...
Please share your surface grinder jig concept…
 
Scotchmon said:
Please share your surface grinder jig concept…
Click to expand...
Small aluminum screw slide table with a 3" stroke bolted to fixture arm or rest, then (mounted crossways) a lineal rail with two bearing blocks screwed into aluminum angle stock with two 60# magswitches poked through it. Pretty simple and light, and to be used with the grinder in the horizontal position. I'm sure there's someone else out there who's thought of or built the same thing, because there's only a few ways to skin a cat.
 
deputyrpa said:
Small aluminum screw slide table with a 3" stroke bolted to fixture arm or rest, then (mounted crossways) a lineal rail with two bearing blocks screwed into aluminum angle stock with two 60# magswitches poked through it. Pretty simple and light, and to be used with the grinder in the horizontal position. I'm sure there's someone else out there who's thought of or built the same thing, because there's only a few ways to skin a cat.
Click to expand...
sounds like a nice upgrade to it!
 
deputyrpa said:
I'm just starting with this hobby, and I'm sure it will be adequate for me with some decent coarse grit belts
Click to expand...
I was profiling my next knife on mine with a 36 grit today. At full speed that little 3/4HP will eat some steel. The variable speed is the main thing that sets it apart from other budget grinders. Wood, steel micarta it works them all.
 
GRapp said:
I was profiling my next knife on mine with a 36 grit today. At full speed that little 3/4HP will eat some steel. The variable speed is the main thing that sets it apart from other budget grinders. Wood, steel micarta it works them all.
Click to expand...
Yeah, I made a kydex sheath today and used the oem belt at 200-300rpm to shape it. It was able to go even slower. Pretty nifty.
 
deputyrpa said:
Small aluminum screw slide table with a 3" stroke bolted to fixture arm or rest, then (mounted crossways) a lineal rail with two bearing blocks screwed into aluminum angle stock with two 60# magswitches poked through it. Pretty simple and light, and to be used with the grinder in the horizontal position. I'm sure there's someone else out there who's thought of or built the same thing, because there's only a few ways to skin a cat.
Click to expand...
Would it be possible to show a few photos of the rail setup?
 
I thought I'd share this tidbit. The platen chiller from Contender Machine Works fits on the back of the shorter Grizzly style platen. I didn't say factory platen because mine has been in the landfill for months now when I made my own. The C or D bracket, or whatever it's called that holds the platen is factory so the distance between idler wheels is factory. I've yet to use the chiller (it delivered an hour ago) in addition to the radius platens I got from the same vendor, but I'm as excited as a kid at Christmas about it!
 
GRapp said:
I thought I'd share this tidbit. The platen chiller from Contender Machine Works fits on the back of the shorter Grizzly style platen. I didn't say factory platen because mine has been in the landfill for months now when I made my own. The C or D bracket, or whatever it's called that holds the platen is factory so the distance between idler wheels is factory. I've yet to use the chiller (it delivered an hour ago) in addition to the radius platens I got from the same vendor, but I'm as excited as a kid at Christmas about it!
Click to expand...
The upgrades from Contender Machine definitely made the quality of my machine WAY better.
 
Just a short update on the Grizzly 2X42 grinder. I've had it couple weeks now, got in an order of 2X48" belts which run just find on stock 2X42" setup. I was planning to mod to a 1/2" tool arm, but not just yet. Perhaps later. Right now it's working good. I think the biggest surprise I've had is how much I use that little grinder. It's sitting along side the 2X72" grinder where I do all the heavy grinding. There are many times I need to touch up something with a finer grit belt which is what will be on the Grizzly. It's so handy just move over without needing to switch belts on the 2X72" grinder. I don't expect to use the tilt function much since the Grizzly is sitting between the 2X72 and a horizontal grinder.

I wonder what kind of motor is used - the nameplate says 1ph, 110vac, 60 hz making it sound like a normal motor, but the wiring diagram shows 9 wires to the motor, 5 wires from controller, a ground wire, and 3 wires from motor to a terminal block. I suspect it's not a normal motor :) The variable speed function sure works good and is very handy.
 
Ken H> said:
I wonder what kind of motor is used - the nameplate says 1ph, 110vac, 60 hz making it sound like a normal motor, but the wiring diagram shows 9 wires to the motor, 5 wires from controller, a ground wire, and 3 wires from motor to a terminal block. I suspect it's not a normal motor
Click to expand...
That's interesting. I'm pretty sure mine states 3/4HP. In one of these threads from months ago someone mentioned it might be a stepper motor. It sure looks like it but I don't know. As I recall, someone mentioned servomotorkitdotcom (not sure this is legal, I mean no malice) confirmed they have a motor for it so if/when I burn mine up, I plan to get an upgrade from them.
 
GRapp said:
That's interesting. I'm pretty sure mine states 3/4HP. In one of these threads from months ago someone mentioned it might be a stepper motor. It sure looks like it but I don't know. As I recall, someone mentioned servomotorkitdotcom (not sure this is legal, I mean no malice) confirmed they have a motor for it so if/when I burn mine up, I plan to get an upgrade from them.
Click to expand...
Ooops, I said 1ph (phase), but looking at the nameplate it just says "110V/60hz" and doesn't mention phase at all. It is 3/4HP - and does sorta look like a servo or stepper motor. Either one has the advantage of having full power/torque at low RPM where a VFD has much less power/torque at low RPM. I suspect it's a servo motor rather than stepper.

I installed a 1hp 3ph motor with VFD to my G0602 lathe, but now with current knowledge I'd use a servo motor. Actually cheaper and better.

OK, a bit more research, the Grizzly site shows the motor is 3/4hp 110V 1-PH - that's where I got the single phase. Cost $149 - better price than I expected. Best option would be to use something like this on the Amazon site B09WZRLM38 for $125 shipped including the controller. I've got two of this type servo motors in use now, one on a CLSP and one on a drill press. Those servo motors have a flat mounting surface that should be easy to bolt up to the Grizzly grinder.

Later
 
Last edited:
Scotchmon said:
Can anyone recommend a good 6-8” contact wheel to compliment the Grizzly 2x42(48)?
Click to expand...
I would expect most any 6" or 8" contact wheel would work just fine. Especially if the thicker tooling arm is in use. I just checked and a replacement tooling arm from Grizzly is only $10.70. plus shipping.
 
Ken H> said:
Ooops, I said 1ph (phase), but looking at the nameplate it just says "110V/60hz" and doesn't mention phase at all.
OK, a bit more research, the Grizzly site shows the motor is 3/4hp 110V 1-PH - that's where I got the single phase.
Click to expand...
Oops is right. Reading is apparently not my strength today.
 
You must log in or register to reply here.
Back
Top