That looks almost exactly like the Shop Fox I mentioned. They're both online for $595.

There are so many Knife makers out there they drove the price up.

Shop Fox and Grizzly are the same company.
Check out this simple budget build. I used some of his ideas to build mine.

http://dcknives.blogspot.com/p/budget-2-x-72-belt-grinder-build.html

Quote from: Mad Max on February 01, 2021, 01:27:59 PM
There are so many Knife makers out there they drove the price up.

Sure, blame the knife makers...

Quote from: Flem on February 02, 2021, 11:05:04 AM
Check out this simple budget build. I used some of his ideas to build mine.

http://dcknives.blogspot.com/p/budget-2-x-72-belt-grinder-build.html

That frame looks kind of light to me, but what do I know? I see that he is in my neck of the woods, I will have to have a look through on his site.

I have looked at building my own 2x72 and the biggest cost by far is the motor and vfd if you want variable speed. The frame can be done many ways but there is no cheap way to get a vfd and motor, unfortunately.


Mark

I bought a 2hp TEFC Baldor on C-list for $60. You don't need a $300. speed controller for one of these. Just put a pulley on the motor that corresponds to the required speed. Simple and cheap.

Quote from: Flem on February 02, 2021, 11:44:57 AM
I bought a 2hp TEFC Baldor on C-list for $60. You don't need a $300. speed controller for one of these. Just put a pulley on the motor that corresponds to the required speed. Simple and cheap.

Yup just control the speed wif different size pulleys.

Do you think a 4 x 36 belt sander with a 3rd roller and a longer belt would work

Jim,

I like your idea, my old 4x36 has the bearing out of the idler end...

Quote from: Flem on February 02, 2021, 11:44:57 AM
I bought a 2hp TEFC Baldor on C-list for $60. You don't need a $300. speed controller for one of these. Just put a pulley on the motor that corresponds to the required speed. Simple and cheap.

I want a wider range than pulleys will give. That $60 motor never happens up here, even used furnace motors are $100+. A 2hp TEFC brand name motor would be $250+ easily.


Mark

Quote from: mmattockx on February 02, 2021, 02:16:55 PM

Quote from: Flem on February 02, 2021, 11:44:57 AM
I bought a 2hp TEFC Baldor on C-list for $60. You don't need a $300. speed controller for one of these. Just put a pulley on the motor that corresponds to the required speed. Simple and cheap.

I want a wider range than pulleys will give. That $60 motor never happens up here, even used furnace motors are $100+. A 2hp TEFC brand name motor would be $250+ easily.



Mark

Damn, I'm glad I already have mine built. I would be demoralized by your predicament.

Router speed control not heavy enough?

https://www.rockler.com/router-speed-control?country=US&sid=V91041&promo=shopping&utm_source=google&utm_medium=cpc&utm_term=&utm_content=&utm_campaign=PL&tid=pla&utm_source=bing&utm_medium=cpc&utm_campaign=(ROI)_Shopping_-_Top_Sellers&msclkid=07571695c24d1bc6a364768c7d749416

All ya need is one of those dimmer switches for 120 volt lights...

Quote from: kennym on February 02, 2021, 04:09:50 PM
Router speed control not heavy enough?

https://www.rockler.com/router-speed-control?country=US&sid=V91041&promo=shopping&utm_source=google&utm_medium=cpc&utm_term=&utm_content=&utm_campaign=PL&tid=pla&utm_source=bing&utm_medium=cpc&utm_campaign=(ROI)_Shopping_-_Top_Sellers&msclkid=07571695c24d1bc6a364768c7d749416

Would be for my used motor. I think VFD's are mostly useful for 3 phase, for single phase you would need to figure out how to keep the capacitors out of the loop at reduced speeds.

Quote from: kennym on February 02, 2021, 04:09:50 PM
Router speed control not heavy enough?

That one would cover the amperage, but does it reduce torque when it reduces speed? I'm not an electrical guy (I'm a mechanical engineer...), but I think that is the problem with speed controlling single phase motors.

Quote from: Flem on February 02, 2021, 05:11:55 PM
Would be for my used motor. I think VFD's are mostly useful for 3 phase,

Yeah, VFD is a 3 phase controller. It allows you to vary the speed without losing the torque.


Mark

Ya need a gear box/ transmission setup.

Maybe a centrifugal clutch setup.

My old 4 x 36 sander and a 2 x 72 belt

Awesome mod!   How do you keep the belt tracking straight?

Tension & tracking is done on the driven end of the 4 x 32 sander .

I have not used it yet. But it does track ok.

The roller out there on the right end is higher in the middle than on both ends.