Introduction: 2X72 Belt Grinder

Picture of 2X72 Belt Grinder

This is my DIY 2 X 72 Inch belt grinder.

Step 1: Making the Body

Picture of Making the Body

Place the Metal like this….. and Weld it in to place Each Piece is 13 inches long Square tubing 2X2 And 4mm thick.

The Inner Pieces are 1 1/2 inch Square Tubing 3 Pieces One 17 inches long and two 15 inches long

the longest one goes on top it holds the Tracking Wheel. the other two go in the front of the grinder

top and bottom. one its for the Plate that holds the Two 2 inch wheels , the other one holds the Metal Plate that sits Flat. like a support Table.

Step 2: Base and Stand

Picture of Base and Stand

Weld The Body to a Flat piece of metal.. Drill holes and place the whole thing on a thick base Wood in this case,

Step 3: Handle Holder and Handles

Picture of Handle Holder and Handles

To Secure the Pieces that Go inside… You need to make handles. Drill holes on the metal use a big Nut.

Weld it in place and then you will be able to place the handles that hold the metal tubing in place so nothing moves or vibrates

Step 4: Tracking Wheel

Picture of Tracking Wheel

On Top of the 17 inch pice make a tilting Tracking wheel holder. use a 4 inch Square tubing Cut it in a Angle

Make two holes on each side. and a bigger hole on front this is where the Wheel will go

secure the whole thing using Locking nuts.

Make sure it moves up and down .

Step 5: Handles

Picture of Handles

to make the handles i use a 4 inch long piece of metal and then welded a big Bolt to it. Cut it to size and grind it.

a bit of Black paint and presto.. You will need 3 Handles.

Step 6: Parts

Picture of Parts

This Parts I got From

The Big Metal Part and 3 wheels Two are 2 inch. they go on the metal plate the other its 3 inch by 2 and it goes on top. that is the tracking wheel.

Square tubing 2X2 Inches And 4 mm thick 3 pcs 13 inches long one 5 inches long and 1 4 inches long.

3 Pcs 1 1/2 Inches Square tubing and 2m thick.

The Motor is a 200 mm grinder With a 8 Inch Wheel.

And a Flat 3 inches Wide by 5mm thick and 8 Inches long ..

All that is missing is the Actual Belt, 2X72 Inches. and a coat of paint.

So go and Make something…..

Step 7: Tools & Safety Gear

Picture of Tools & Safety Gear

This is what you need to make this …...

Step 8: She Is Done

Picture of She Is Done

All done. Belts are coming.

Step 9: Modifications

Picture of Modifications

Had to change the tracking arm due to Belt not
Fitting So I made a new tracking wheel holder
And new Arm. This one goes sideways instead of just up


ZekeM (author)2017-03-10

How do you keep the drive wheel on? I've seen many different ways and was just curious.

newfiebackflip (author)2016-03-17

can you add a bill of material plus the cut lengths required?

MikeH461 (author)newfiebackflip2017-01-22 very simlare build has everything you need the cominde 2 diys are nice

dc-labs (author)newfiebackflip2016-06-17

You still looking for plans?

ChrisR333 (author)dc-labs2016-08-23

I am

dc-labs (author)ChrisR3332016-08-23

I have some details on my blog:

Including dimensions and building the tool arms.


newfiebackflip (author)dc-labs2016-06-17

nope because I'm building one based off of the plans on your site lol.

robbied (author)2015-11-19

This is a great intermediate step between the bench grinder with attachment and the full blown 72" grinder. For light to medium work this should be great. If you find yourself wanting, it's an easy step to just bolt on a new motor.

I bought a 1.5 hp motor and speed controller to fit mine, after I build the frame.

Fastnate (author)robbied2015-11-19

What type of speed controller did you get? I recently got a 1.5hp 2x48 grinder that is single speed. I'm interested in having a VFD.

robbied (author)Fastnate2015-11-19

I bought the motor and controller from the motor company, but basically, it's a three phase 1.5hp 2800 rpm motor, and a 1.5hp VFD with optional external control. You can find the VFDs reasonably cheap on Ebay.

stevenarango (author)robbied2015-11-19

yes i will be getting a motor with a controller just have to with after i get back from holidays.. do you pictures of your set up?

MitchellE5 (author)stevenarango2017-01-22

A treadmill motor and speed control works great

robbied (author)stevenarango2015-11-19

I don't have all the wheels yet. My drive wheel is being machined by a friend, so when I have that I will put it all together.

HauptmannP (author)2016-08-02

Is it necessary to have the sideways tracking arm?
And could you please explain why do we have to add a hinge on the tracking wheel?
And what is a tracking wheel?
And did a 2x72 belt fit into your original setup?

(Sorry I have so many questions, I'm doing it the first time, and been saving up for it for a few months now. So just want to take every possible precaution)

stevenarango (author)HauptmannP2016-09-02

sorry for the late reply... having a hinge its necessary to be able to move the wheel

side ways, to keep the belt centred.

yes the 2x72 fits here........

matrixmechanics (author)2016-02-22

When you made the mortification, how short did you end up cutting the arm, and how short did you cut the rear support arm to? Also did you weld the spring to the base? Or did you just weld a short bolt and then slid the spring inside of it to help keep it steady?
And lastly for the new wheel holder, did you just use a bolt and slid the wheel onto it or did you use a sleeve to mount it.
I am going to start building mines today. I hope that you are able to see this and answer before I start. Thank you.

yes the pc its about 4 inches. but before you cut or drill holes.
make sure you have the wheel so you could mark the location. not too low or to high and you need another small hole for the bolt that controls the movement of the wheel. in and out.
hope to see pictures of your set up.

the arm was cut to 8 inches long and the spring is welded to the bottom. for the wheel holder i used a bolt the wheel has bearings so no need for a sleeve.
good luck with the build and have fun…...

Thank you so much. One last questions (sorry about that). I'm nearly done, the only thing that I have left is the square piece of tube that you used on the arm to hold the top wheel (the one one the modified arm). How long did you cut that piece and a bout's were did you drill your hole, so that you could mount the other piece that you cut at a angle. Judging from the pictures is it about four inches long, and you drilled the hole about a inch or so from the top.

dc-labs (author)2016-02-22

Hey Steven,

Cool build. How do you find the belt speed? I am not sure if that is a 2 pole or 4 pole motor, but the big drive wheel is going to give you some serious speed. I like to slow mine down for finer belt grits. I made a similar build, but used a VFD on the motor.



stevenarango (author)dc-labs2016-03-01

i have purchase a motor that has a speed control. a regular motor its not suitable i need to slow and speed up the belts...

StefanoB38 (author)2016-02-21

Salve, grazie per avermi consentito di vedere queste immagini che credo mi saranno molto utili !

stevenarango (author)StefanoB382016-02-21

you are welcome glad you like it,,,,

NicholasS48 (author)2015-12-27

any chance of few photos of it up and running? Looks great

stevenarango (author)NicholasS482015-12-29

thanks will do as soon as i get back from holidays cheers

Verga (author)2015-11-27

Interesting idea, but a little short on specifics. Thank you for the link to the two links, they both contained the information you left out and did a good job of sugfgesting sources.

Eastfarthing (author)2015-11-20

This looks like the one on Perhaps you should credit the designer D Comeau?

Nicolas-M (author)Eastfarthing2015-11-22

There have been many people that use this same fusing in actuality it was designed in 1922 there's a patent for it in the patent office and it's been copied a ton of times but if you have a patent for it or this D Comeau does then he needs to say something if not nobody has to credit anyone for this dosing and yes I've also seen the one off YouTube as well so no credit is actually do at all

mattthegamer463 (author)2015-11-18

Great work, what stops the belt from falling off the wheels? Are the wheeles curved in the middle?

yes the wheel on top its the tracking wheel. by turning a screw it moves the wheel in and out keeping the belt centered….

Thanks I'm interested in doing one of these

check you tube on 2X72 belt grinders you get some ideas. from the videos.

hope to see pictures of your set up.

Ive got an old motor that I hope to run a 12 inch disk and some kind of belt setup off of. Might be a two stage project, disk first and belt added on later

TomasuD (author)mattthegamer4632015-11-19

mattthegamer463 (author)TomasuD2015-11-19

Thanks, looks like I'm all set

JETDRIVER1955 (author)2015-11-19

very good but why didn't you put a spring in to make it auto tension that's how it's done normally. Then when fitting belt you just push the front section in and slide belt over pulleys. The Spring tension on the belt makes it stay on track otherwise you are going to be adjusting it all the time.

yes i did put a sling inside the base leg. it keeps the tracking wheel up agains the belt,

FloridaJo (author)2015-11-19

What is a belt grinder?

robbied (author)FloridaJo2015-11-19

commonly known as a linisher. Used with various grit belts to shape metal.

Alex 2Q (author)2015-11-16

Great project mate and thanks for updating the pictures.

Cheers Alex

pfred2 (author)2015-11-15

I probably should make one of these belt sanders. Although I have so many hand held bent sanders now. Some of which I have made stands for too.

Rco87 (author)2015-11-15


Rco87 (author)2015-11-15

Wow awesome idea! Are you going to swap out the drive wheel on the fringes for something wider?

78654 made it! (author)2015-11-14

this is a very easy to us and i will made it now

BeachsideHank (author)2015-11-14

I like the idea of incorporating the motorized grinder into the design. One can still use the outboard wheel for wire brushing or rotary grinding, and also use the belt driver as a contact wheel too. I wish your 1st image didn't have such background clutter though, it distracts from your very useful idea, but still, well done.

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Bio: They Call me Wallace.
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