Disc Grinder From a Free Treadmill Motor (Multi Position)
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- Опубликовано: 14 фев 2019
- In this video I take a 2.5hp Treadmill motor I got out of the trash and turn it into the variable speed 9" disc grinder.
I got my information on how to do the electrical work from Mike Man Made on youtube, see these two videos below for some really helpful info:
• Low Cost DC Motor Cont...
• DC Treadmill Motor Con...
Thanks Mike!
Here is a link to he disc I used:
usaknifemaker.com/disc-flat-9...
Check out Ollie Iron for these great corner squares:
www.ollie-iron.com
And check out KWwoodworks on instagram:
kwwoodworks
Thank you to Pferd abrasives for supporting my shop and my channel. For links to some of the grinding discs I use most see below:
As an Amazon Associate I earn from qualifying purchases.
Flap disc:
amzn.to/2Myxozi
Inside corner disc (AMAZING):
amzn.to/2WoYM2q
Wire Wheel:
amzn.to/31k15rx
Thanks for watching! Be careful, know the limits of your skills and your tools! Don't try this stuff at home!
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We teach classes in woodworking and welding here at the shop, if your interested see the current schedule here.
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For PDFs of some of our project check out our profile on Instructables:
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Below are some links to tools I use in the shop on a daily basis.
As an Amazon Associate I earn from qualifying purchases.
Bosch Miter Saw ( My Favorite miter saw)
amzn.to/2BeBulk
Sawstop Table Saw:
amzn.to/2DuAYVy
Wen Tabletop Metalcutting Bandsaw
amzn.to/2DrS7zf
Articulated Vise:
amzn.to/2FXKw9V
Bosch Portable Bandsaw ( 18V)
amzn.to/2mQdUq4
Porter Cable Restorer:
amzn.to/2BeWrfU
Lincoln 120V Welder ( good for a home shop)
amzn.to/2Dly6qV
The Camera I use:
amzn.to/2DqG325
The Tripod I use:
amzn.to/2rnEqfO
You closed off the cooling vents in front of the motor housing when you mounted the fabricated mounting bracket. May cause motor overheating. Just saying, otherwise good idea of repurposing the treadmill motor for a disc grinder/sander! Great job, thank you for sharing! You got my thumbs up!
If you add an on/off switch to the red wire on the potentiometer, when the motor is running you can turn that switch off and when you turn it back on the motor will spin up to the same speed it was running at. That way you don’t have to try and find the same speed again with the potentiometer. Just FYI.
Apparently those controllers require you to turn the pot wiper (pin 2 - red wire) all the way down to off before you can turn it back on again... But I came here to post that you could put a SPDT switch which disconnects pin #2 of the pot (red wire - the wiper) to the low/off position on one position of the switch and to it's normal (straight to pin#2) wire in the other switch position.
In theory that should satisfy the controller's safety system and let it think the pot has been turned all the way down in it's Soft-Off/Stop switch position, but flipping it to On/Go will resume the previous speed.
A digital RPM counter would be a nice addition to this project. There are a number of ways to achieve that... lookup lathe or mill RPM readout if you are at that stage.
I love how you make your videos so that we can all try what you do. I am currently endeavoring into the knife making world and constantly refer back to your $100 knife making shop video. I tried to anneal my saw blade after putting it under a fire for like an hour, lol. I warped the steel but it still has the darn magnegtic property. Working hard to grind it and getting used to grinding. It's still hard but I'll slog through. Nice channel my friend!
Nice work! Definitely gonna share this
Really enjoyed this video ! Thanks for sharing.
Great design Chris!!!!!! Thanks for sharing!
That needs to be another Diresta poster “I’d rather be looking at them than looking for them.”
Great Job and your Karate Skills are Fantastic..
That’s a pretty clever idea with the mounting bracket. I probably would have done this fixed in one position. This makes it a little more versatile. See you Wed/Thursday. 👊🏼🔥👊🏼
Kickass Video -- Nice finished unit -- Great Technique -- you very are creative . Two thumbs up .
Another cool build, thanks for sharing! Treadmill motors are very versatile you can use them for conveyors too. I like tinkering with electronics too and as I learn and go back to early projects I'm amazed that my house didn't burn down. If you're unsure of you're project maybe don't leave it plugged in and unattended for the first little while. If it doesn't catch fire after the first little while you probably did ok.
-A carpenter on electrical.
Simply amazing video. Great job..I'm glad jimmy diresta gave you a shout out. T
Great project.
Thank you for sharing the knowledge.
Cheers
Cool upcycle, lots of detail!
Excellent and fun to watch.
Great idea man! Awesome video!
Very cool, thanks for sharing!
Well the in-laws don’t know it yet but they are about to give me a motor, mother board and cord from their treadmill!
How did that go?
Did a superb job my friend
Good job man and good video
Perfect work.
That is a Really good idea, thanks.
Strongest, most accurate punch in the world
Very nice work! @This Old Tony would be impressed with your kung-fu metal cutting skills :)
Really cool!
Hey, just rewatching this video here. I wanna say great job on the project build. And. Also, I stumbled on another channel dedicated to treadmill motors in shop machinery. Dazecars. Tons of great info on his channel. According to him, using a motor choke is essential. Watch his videos if you're gonna use treadmill motors!
About the same time this video came out, I started collecting curb find treadmills for the purpose of making machines. I watched a buttload of videos about the subject. One of which suggested mounting the mc60 controller on a piece of wood as to not ground it out. I see you did not do that here. Maybe it is not necessary?
Nice job on the grinder! I love your channel, man. Thanks for sharing the process with us.
Woah I didn’t know you could drill metal with those. That could’ve saved me a bunch of time.
ahh, Channeling This Old Tony at 16:16 I see.
I have one of those 6" wide wood belt sanders and the disc was missing so I made one.
The .005 run out after use leaves one section of the disc bald down to the paper and the other side has plenty of use left in it.
I'll be taking it to someone with a lathe to face it off, oh, and the run out is from when I welded the disc to the hub.
Brilliant- a free variable speed motor with 2hp! I’m gonna be watching for treadmills on trash day! Also liked the magnetic brake debut, that thing is the cat’s ass.
14:47 me, anytime I work in my shop ever!
Rheostat pedal would be an amazing upgrade to this variable speed
Awesome!
Wohoo trash can motor AND $88.00 for the disk. Ill hav eto make my own. Nice simple build !
You can get some very nice motor controls on ebay now, change the pot out and add a cross over to DC. about 14-15 bucks.
Really cool build. One thing, though.....why not drill some holes in your control box for cooling? It would help keep things in there a little cooler, no? :) Just a thought. :)
I was thinking the same thing, I am though worried about all the conductive dust that will inevitably get into the control box and could short out a component. My thought was to try and fine some really fine stainless steel mesh and make a sort of screen to allow airflow but limit dust particles... Ill hopefully come up with a good solution before I fry this thing! Thanks for watching!
Make Everything scotchbrite pads make excellent filters and are dirt cheap to replace
@@MakeEverything Hardware cloth covered by cheesecloth is what I would try (because I have both on hand).
@@PatonHaus Totally agree.
Have you found a why to make that disk hook an loop? Also I am having trouble removing the flywheel. Any tip?
Great job !!! what glue did you use on the disk?
very work
Just a question: Is that motor air cooled through the holes you covered up with the plate? Will it get hot because they are now covered? I have wanted to make one of these for a while now and this video makes it a lot easier. I was going to use a three phase motor and a VFD, but this DC motor gives all the controllability that is needed at a much lower price. GREAT video.. Michael in Colorado.
Did you get the flat disc or the one that had the angled surface?
Great video... I’ve just installed one of these motors on my drill press. So much torque!
Questions for you. It looks like you left off the DC transformer from the treadmill... was that intentional? Will AC power damage the motor?
I believe he installed a rectifier. At least that is how I do it.
thanks
you should look into a foot pedal for easy on/off control
I’ve been trying to come up with an appropriate motor for a direct drive meat grinder conversion. I assume this design would allow me to get the rpm’s low enough( say 150)but still have enough torque that it wouldn’t bog down?
Why not an adjustable table rest stop? Height adjustable & tilt for different angle. Also I would put a slot into rest stop so you can ad a sliding adjustable square going parallel to the disk.. Either way, well done. Been trying to figure out a nice project for the treadmill motor I currently have in my garage.
Cheers!
Maybe I missed it in the video... are you planning on adding a table to this at all?
Instead of securing the controller by the motor, that you have to move around both of them, I think the two should be independent. simply make a cord with a prong and the controller sitting anywhere with plug in. You simply plug in your motor to the controller and that is that. No different thany AC recepticle. simple, clean and no bulk. You can sit the controller anywhere out of the way. If you want to get really fancy, you can integrate your potentiameter on your motor and its wire along the cord of your motor, which won't be too cumberson since the wires on the potentiameter won't be too big or thick. You plug it in like you plug in your motor to the power supply.
Where can I get that linear potentiometer? I didn’t see the link in the description?
Which poteniometer did you use and what type of wires? Sorry, I am brand new to electricity.
We used that type of treadmill motor years ago on a lathe and it lasted about 3 months.
because you fuck up something ,these mill motors should lest years and years on a treadmill ,on a grinding, on a drill etc,etc, if only lest 3 months that's because you fuck something some were
@@lesstime1678 English not your first language eh?
Nice project! The disc is a little pricey though.
Do you find you would need a larger disk?
What value potentiometer did you use? 100k?
I have a MC 60 board with my dc motor attached to my woodlathe the motor is a 2.5 hp 1.2 hp continous its so under powered
at low speed and when I put a load on it it boggs down and then ramps up the rpm dangerously
I did not see perforated holes for an air ventilation of the electronic components of the controller.
👍
Checked Amazon and eBay for a "supremer tapper" but came up with nothing remotely like your device. Can anyone provider searchable nomenclature for the tapping head?
What was the potentiometer you used?
I tell you I have not been able to remove the flywheel/pulley or whatever they want to call it from the motor.
Some folks seem to just grab the pulley by hand while they turn on the motor, I assume in reverse direction.
I have tried and it mostly just hums. Or maybe my potentiameter was lame... I don't know.
Then again if I use it for sanding, I just leave it alone. It may not be 9 inches in diameter but it is flat. I think they are 4-5 inch in diameter. and I can just glue a sandpaper on it like you have. And why even remove the bracket from the motor. I can just bolt it onto the side of the bench.
Why not enlarge the disc hole instead of messing with the motor shaft?
thanks for nice video i thought you said you will add a link for Potentiometer but i did not see any link for that can you please add it will be greatful
👍🏻👊🏻
Why not drill out the faceplate to the shaft size? The aluminum is much easier to remove than hardened steel.
Like 👍
turn it on slow and use a 1x30 sanding belt with a variety of grits, woulda been a more even way perhaps.
I envy you. You have far too many toys for someone your age. I also envy your talent.
What watch do you wear
It’s a Casio with a vibration alarm so I dont miss alarms due to wearing headphones or hearing protection, about $30 on amazon so when they get wrecked I can get a new one. Weld spatter loves watch faces
@@MakeEverything thanks
Great job, but Mike hasn't put out a video in over two years.
Just put a light switch on the plug
Yes! I thought the same thing.
топ схема!
Can’t get more than 3/4 hp from 115v.... but pretty sweet build
more like 1.5 to 2
10:03 * 6 holes😁
TURN ON MOTOR AND PUT FILE TO REMOVE SOME METAL
You can always put a a switch guy by placing your potentiometer on your required speed then place a switch on the cable from the potentiometer or put a switch. On the cable out put of the speed controller
i don't wast that motor for a sander , i make a table saw with that motor , very high speed but i don"t use the controller , i hock up the motor direct to 120 V whit a bridge rectifier and then i adjust the speed whit the pulley accordance the max disc speed ,,,,no electronics here,,,,,, because for sanders, table saw ,drill press etc,etc,etc,etc you can not have delay , ramp ,etc,etc because no moment motor and without the moment no good for those applications
I DONT LIKE YOUR ALUMINUM PLATE ( USE STEEL IF U COULD )