Introduction: Vibration-free Grinder Stand

Picture of Vibration-free Grinder Stand

My bench grinder is mounted on this three footed stand. While it does a great job holding the grinder, it's not much for holding still when the grinder is spinning. It will walk across the floor and vibrate and rattle unless you put considerable pressure with your foot on the bottom of the stand. This is partially because my garage floor isn't perfectly level or clean. After dealing with it for several years, I decided to do something about it.

Step 1: Gather Your Tools and Hardware

Picture of Gather Your Tools and Hardware

I happened to have some door stopper tips that I purchased with the intention of using as feet on my portable bandsaw stand. I never got around to it and haven't felt the need to do it, so I decided to use them on the grinder stand. I also had a box of 1/4-20 screws/nuts. These bulk packs are handy to have around. It's best to buy the longest length screws, because you can always cut off any excess if you need shorter screws. The only tools needed are a drill, 1/4" drill bit, and a screwdriver.

Step 2: Modify the Foot

Picture of Modify the Foot

The hole in the stopper tip is a bit too small to accommodate the 1/4" screw. I just used a drill bit to enlarge the hole a little.

Step 3: Install the Feet

Picture of Install the Feet

Once the stopper tip is drilled out, you can insert the screws. The head of the screw fits very snug in the stopper tip. Install a rubber tip on each foot of the stand and add a nut to hold it on. You now have a very stable (and quiet) grinder stand.

Comments

buck2217 (author)2015-07-01

Great idea

Mihsin (author)2014-10-04

Lengthy responces take the fun away of a new ideas.

I redress my grinding wheels to a vibration-free spins, however, this instructable reminded me to fabricate a stand like this. Many thanks.

motor-machinery (author)2014-09-15

The instruction is clear, is a good balancing method

pfred2 (author)2014-09-05

Bear in mind it isn't the stand that is vibrating. It is the grinder on top of it that is vibrating. So you might want to look there first for the cause. I'm just saying the stand is simply transmitting those vibrations. So here you've just addressed the symptoms without really finding a cure.

There are a few things it can be, and it would be lengthy for me to try to explain them all here. So I'll just say look hard at the grinder, and you might find what is out of whack with it. Because it really shouldn't be vibrating that terribly if it is running right.

Pulling the wheels off and running it will narrow down considerably the root cause. If it runs smooth then great! Then you just have to mount the wheels in such a way that they are balanced, and aligned. Doing that might take swapping some parts around, or spinning them in relation to each other on the shafts. Some trial and error is in order here. Oh, and of course you need to true up the stone after you mount it too. That is called dressing a grinding wheel. If you don't do that even the best grinder will run roughly. If you've never dressed the wheel ever then that is your problem right there. Dressing a freshly mounted wheel isn't optional. At least not if you want it to run right.

I've run Doall surface grinders and when we mounted wheels on those we dressed them. They're like the best grinders in the world too. My point is no matter what when you mount a grinding wheel you dress it then too. There is no room for debate. Anyone who disagrees is just wrong.

You being a guy in their garage I suggest you use either a broken grinding wheel, or better yet a carborundum stick to dress your wheel with. Although if you were a pro you'd use an industrial diamond. Dirty the wheel all up with your greasy paw prints, then dress it clean. When your wheel is showing all clean surface it is properly dressed.

Your machine being ah, imported cleaning up the shaft shoulders with a file while it is running might go a long way towards getting it to run right too. I mean you don't think for what it cost the people that put it together cared very much do you? Probably not.

So use your senses, especially your common sense, and really examine that grinder carefully. Because it should have never been belly dancing across your garage floor in the first place.

ardnon (author)pfred22014-09-08

sounds like we need an instructable on dressing the wheels properly :)

pfred2 (author)ardnon2014-09-10

earz_cd promises to embark on a wheel dressing journey of exploration, so I'll leave it to him to give us all an amateur's eye view of the topic. The insights of beginners can be enlightening to us all because they always bring a fresh perspective to any topic. To me dressing the wheel has boiled down to simply, dress the wheel. The subtleties of it escape me anymore.

Dustin Rogers (author)pfred22014-09-08

You are correct, the vibration is definitely caused by the grinder. I've run it with just the wire wheel and it runs smooth, so it looks like grinding wheel needs to be dressed. I've never done that. :) I inherited the grinder and I use it very little, but when I do, it annoyed me. Maybe that's why I avoid it? You mentioned using an old grinding wheel - do you just hold the old wheel up to the new while it's running to true it up? Similar to truing up round stock on a lathe, just using the old grinding wheel as your cutting tool? I imagine this creates a lot of dust - should I do this outdoors? You also mentioned filing the shaft shoulders. Can you elaborate on that?

Part of the noise is due to the cheap import bearings. I had to pull the motor apart a while back to replace a faulty switch and the bearings left a lot to be desired, but I threw it back together so i could finish the project I was working on. Thanks for the comment - I'll try to get this thing sorted out.

pfred2 (author)Dustin Rogers2014-09-10

You've got it. Whenever you mount a grinding wheel on a spindle they never are perfectly aligned. So you dress the wheel up, and then it is in perfect alignment. You also dress a wheel whenever it gets loaded up too. Or even if the abrasive has dulled. You get a better cut then. Initial dressings can be heavy, subsequent dressings you do not have to remove as much wheel to get to good abrasive. A little kiss does it then.

A lot of dust does get thrown off when you dress. The dust should tend to fly where your grinding swarf goes. I keep my grinders away from everything else so I dress in place.

When you dress try to use a steady, smooth pressure. It might take a couple tries to completely dress the wheel to true it. Shut the grinder off, and look at the still wheel, you will see what contact you are getting. You'll see when you're done. If you've never ground before on a freshly dressed wheel you're in for quite a treat.

You may say to yourself, this is how it is supposed to work. Because it is how it is supposed to work. In use I guess a wheel will wear to alignment. I know most folks either don't know about dressing, or if they do, they do not realize how important wheel dressing is. I worked in a tool and die shop where we made wheel dressing fixtures. So being trained in that environment we had a different opinion about wheel dressing than most I suppose. We were pretty religious about our wheel dressing.

Broken wheels can work OK in a pinch, ideally you want something like this

http://www.ashleyilestoolstore.co.uk/index.php?mai...

Well ideally you have a surface grinder and use a diamond point. But you're doing it by hand on a bench grinder. A broken wheel will do the job. Good luck dressing your wheel up. Steady, even, smooth strokes. I'm sure you'll figure it out.

profpat (author)2014-09-10

nice one!

terrefirmax2 (author)2014-09-09

The instructable was very clear and well written.

RobertA2 (author)2014-09-09

Kudos to pfred2. You have hit the target. Bravo.

DoDo729 (author)2014-09-07

Well done

veseli (author)2014-09-06

very nice! good idea

seamster (author)2014-09-05

Nice fix! You garage sounds like mine... uneven floor, and not particularly clean!

About This Instructable

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Bio: I'm a husband and father that loves working in the garage. From sewing to welding to wrenching on engines and everything in between.
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