I have to say, the twenty odd years that I've had my grinder, I thought wiggling and out of balance was just the nature of the beast. I'll add the truing of my bench grinder to the bucket list of thing I need to do. Thank you very much!

First one showed missing parts. Second one was complete. It's a working bench grinder kzread.infoUgkxxC8HPnl24fu0XhMU_nbmWNEUoK1RMHXk . One thing I like alot is that it's surprisingly quiet. I don't feel like I'm sacrificing any rpms or power for the quietness either. All in all it's a very nice machine. No vibration whatsoever.

Great video, I need to do this to my 10" buffer and 8" grinder. I never thought you could get rid of so much of the vibrations.

Love the added humour with the Metal Printer. Thanks for posting a video that can make people smile.

@woodscreekworkshop9939

4 жыл бұрын

Thank you so much!

Great diagnosis Yuchol. The attention to detail makes a world of difference when looking for precision. Thanks

@woodscreekworkshop9939

4 жыл бұрын

Thanks Terry as always

Thanks Yuchol. I enjoyed the steps to making your grinder better. Hope you and your family are healthy and all doing well 😊. All the best, Norm in Arizona

@woodscreekworkshop9939

4 жыл бұрын

Thanks Norm, we are doing well!

Just a thought from and old machinist. Any time your remove a wheel for any reason, ring test and true it. As you know by placing a small screw driver or rod in the center hole and lightly tapping the side of the wheel with a small wrench, you will hear it ring. If it sounds flat (dull sound) it has internal flaws or the start of a crack and if so, immediately place it your trusty vise and break it with a hammer...preventing anyone else from using it, as a defective wheel will blow (disintegrate) causing them to get hurt. I might add...that was a good find on the shaft Take care be safe ;

@user-jn9dl9px6r

3 жыл бұрын

Thanks for the tip

Amazing how a bit if tinkering with the right tools and knowledge makes a world of difference. Well done. Also, the printer impressed me so much I have ordered one from Ebay. I've gone for the Canon MX310 model (the same as yours) around £120 mark which is relatively cheap considering what it's capable of doing. The scaling up/down function sounds great and from what you show, the results are incredible. I can't believe this is the first time I've seen one being used. Very Impressed Sir. Show some more please!

I have the same problem with my low cost pedestal type grinder. Some Great tips to improve runout . Thanks BB

@woodscreekworkshop9939

4 жыл бұрын

Thanks Bill

I love videos like this. It's can be a lot of fun taking an inexpensive mediocre tool and making i better.

@woodscreekworkshop9939

4 жыл бұрын

Dudley Toolwright me too, we hobbyists can’t compete with sponsored big shots as far as the equipment goes and making do with what we have and making them better is a hobby in itself. That’s why I watch your channel 😁

Thanks heaps. I laughed and I learned, that’s all I need from a video. I have made a simple way to balance wire wheels pretty well but never considered chasing those few thou on the grinding wheel. Can’t wait to try that. That cost you almost nothing to do except time and for most of us hobbyists we have more time than money and that was time well spent. You have another sub. Cheers Stuart 🇦🇺

@alsatian9130

4 жыл бұрын

well said Stuart. agreed 100 percent

Hi Yuchol. i am sure this problem exists for most home machine shops , what a great /cheap/ effective solution . no more tears . Cheers Ade.

@woodscreekworkshop9939

4 жыл бұрын

ADES WORKSHOP thanks Ade for your kind words as always 🙏🏼

all the work you did ... I can only call you what you are!! MASTER OF THE CRAFT!! So much honor and respect to your kind of work. I hope to see more Americans follow your lead. Thank you so much for your time, effort, and most of all -- your attitude.

@woodscreekworkshop9939

4 жыл бұрын

alsatian9130 wow, thank you!

I like it. I'm going to try getting my old Craftsman grinder smoother after watching this. Smoother is safer, more accurate and just more enjoyable to use. Thanks !

I'm going to be doing mine now that I've seen how well this has worked out. Thanks for the inspiration.

@woodscreekworkshop9939

4 жыл бұрын

Dread Naught thanks!

An easier and effective solution is to simply rotate the flanges and individual Grinding Wheels to different (marked) positions. This by itself will usually help as the cheap Flanges are more than likely not perfectly true. . Paper shims are also effective in shimming and can get a wobbly wheel running quite true. I felt I wanted to mention this as MANY here do not own Lathes or Milling machines and just have more basic Shops with Bench Grinders. I have been using this method for both inexpensive and even high quality Bench Grinders for 40 years with much success - you should try it! There are a bunch of KZread videos on how to true up grinding wheels. While your efforts did seem to help they are not achievable without expensive machinery.

Oh man what a wonderful difference - I've been intending to do this to mine for a while, now I'm feeling more optimistic about the results.

@woodscreekworkshop9939

4 жыл бұрын

Give it a try!

Good video Yuchol, much better after your repairs. Thanks for sharing.

Hello sir, great video, I am having the same problem, I will now attempt to follow your advice thank you so much. Colin, UK.

I had to also make clam-on collars to act as a backup for the inside washer as the shaft shoulder was destroyed by the stamped washer. As a teenager in the mid 60s I worked in a machine shop that made belt driven bench grinders. This sure brought back memories. Great video.

@woodscreekworkshop9939

4 жыл бұрын

Wow, thanks for sharing

Did the same thing to my Harbor Freight grinder. It was much worse than your at the start but was smooth after the fix. This was before I started my channel so I did not video it. But you are right this method fixes about 95%of the vibration. Thanks for sharing.

@woodscreekworkshop9939

4 жыл бұрын

Thanks Anthony, was definitely worth my time

@robertoswalt319

4 жыл бұрын

It is interesting how such a simple fix makes such a huge difference. I am probably going to be doing this with my grinders this weekend.

👍 well done sir. I did a similar process to my grinder. Working on new guards/rests that are more ridged than the stamp steel. Ever notice how good grinders have cast steel guards? Big difference when grinding, lot of flex.

@woodscreekworkshop9939

4 жыл бұрын

So true. new tool rest project will be coming soon

Good video. I've had to do all the same steps, and ended up turning spacers like yours, but with a nose to center the wheel on the shaft. And for what it's worth, although my Norton wheels cut great, they were actually less true and balanced than the stock wheels, so all these steps are well worth the effort. Thanks for the vid.

Great job. I am planning to upgrade my own bench grinders in this same way. Do you think you can do a video of the wheel balancer you proposed to make?

@woodscreekworkshop9939

4 жыл бұрын

I will when I can get to making one. Hopefully soon 👍🏼

Cool timing. I am tuning up the rests on my grinder this week. I lived with it for a long time, but finally decided it was time to do something about them.

@woodscreekworkshop9939

4 жыл бұрын

Good luck Brian!

@brianmoore1164

4 жыл бұрын

@@woodscreekworkshop9939 Thank you!

great project Yuchol. Thanks for sharing....now I have some work to do on the three "cheap" grinders I have. Cheers from Canada

@woodscreekworkshop9939

4 жыл бұрын

bhein67 good luck!

Very informative- did not read all the comments, but I'm sure the flawed construction components were addressed. Your treatment of the tool was excellent and fun!! Bet you could get whatever you asked for that printer...

I smoothed out my Craftsman grinder with simply installing a set of new bearings. The fact that I got the grinder something like 30 or 40 years ago might have had something to do with the bearings being rough.

@TheUnofficialMaker

Жыл бұрын

I inherited one of those from my dad, installed new wheels and the difference was astonishing!

Probably everyone has a grinder like that. This is encouraging and simple to do.

@woodscreekworkshop9939

4 жыл бұрын

Thanks

@LilasTools

4 жыл бұрын

Simple if you have a lathe......

@JSLEnterprises

4 жыл бұрын

@@LilasTools ... $4000 later, you can make washers for your $100 grinder xD

This was very very well done had me to the end.👍🏽

Even the difference in sound was noticeable after you put the shin in the right side only the after the left side shin was inserted it sounded like a precision machine. Nice video. I have a REALLY cheap grinder and I’m going to get to work on it.

@woodscreekworkshop9939

4 жыл бұрын

Thanks, I am happy with the result

Great! My grinder bit the dust and this definitely helps me feel better about the new ones wobbling LOL.

I have had a similar grinder for at least nine years for sharpening my wood turning tools. Purchased a balancing system that replaces the stamped washers. Even then over time as you use and redress the wheels I need to rebalance cause the density of the wheel is not that uniform.

Oh My, I really love your humor and choice of music too....Cheers, Paul

Thanks Yuchol, Great Video With Lots Of Helpful Advice--You Keep Adding To My Projects List Brother! (Keep It Up) ;-]

@woodscreekworkshop9939

4 жыл бұрын

Michael Rosenlof sorry not sorry 😜

Thanks for the ideas. Did it run smoother after dressing the wheels?

@woodscreekworkshop9939

4 жыл бұрын

Yes it did

Good work, I had a similar problem with my grinder. The shafts had 3 to 5 thousandths tapper and the shoulder's where rough. I pulled the armature. Mounted it between centers in the lathe. Turned the shaft and shoulders to within a thousandth. Made new clamping discs. Shimmed the bearing to end housings to minimize the side to side motions, as the bearings where slip fit in the housings. Now it runs smooth as silk.

@johncoops6897

Жыл бұрын

That is the correct way. This guy wasted a lot of time and effort to acheive a tiny improvement.

@michaelthibault7930

7 ай бұрын

Given the eventual use of the lathe, and the eventual use of shims, I'd have expected that the grinder axle would have been placed in the lathe and the exposed shafts and shoulders made regular very early in the process.

Pretty cool, Thanks It looks like I am in my shop tomorrow ,trying the ideas.

I tried the printer hack but all I got was a paper copy! Nicely done. Some people just don't get it, you do it for fun and have all the expensive equipment because you love it...some people buy sports cars or golf, etc. Whatever bring you joy in this insane world.

I did the same and than went one Further and popped it apart . I put the armature in my lathe between centers and trued up a few things on the shaft that were running out along with a good set of bearings .. now it runs really smooth. So add them steps in for a full tune.

Great video - illustrates the adage that we'd love to have better tools but it's more important to love the tools we have.

@woodscreekworkshop9939

4 жыл бұрын

Well said

Yep- need to do this! Well done!

Outstanding video, great idea to use your superpower skills to machine out all the slop of the initial build. Thanks I'm sure to copy your smart fixes here. Cheers

A good video - gives me thoughts for one I am playing with for a tool cutter and grinder....

@woodscreekworkshop9939

4 жыл бұрын

glenn whitchurch thanks Glenn!

I really appreciate your sense of humor. Keep it up!

@woodscreekworkshop9939

4 жыл бұрын

Thanks John!

I loouuve your attitude: lets make it better, no matter how good it is. Despite what most people think, you cant buy away quality problems, you will only buy new problems.

@woodscreekworkshop9939

4 жыл бұрын

CXensation a lot of truth to that. Thanks

Wonderful video. Informative, understandable and humorous. Thank-you so very much!

@woodscreekworkshop9939

4 жыл бұрын

Joe Dance thanks Joe!

Seven years ago and used. I didn't just come down with the rain last night. Brand new right out of the box.

Love that printer!!

first time watching your videos and i have to say , super cool .. its rare to see me laugh through any informative videos , but I was with u. i will definitely be subscribing. nicely done!!

@woodscreekworkshop9939

3 жыл бұрын

Awesome, thank you!

Thanks for this tip. I will do the same. Keep up I like your stuff

@woodscreekworkshop9939

4 жыл бұрын

Ettore di Carlo thank you!

Just a tip. Make big and rigid tables for the grinder. These two sheet metal things doesn't work at all. BTW, i use to have a printer like that but it was stolen... any ideas?

@woodscreekworkshop9939

4 жыл бұрын

Tool rests are coming soon, you're giving away all of my secrets 😁 I have my printer locked and hidden when I am not using.

@ron.v

4 жыл бұрын

I don't know who stole your printer but I bought one that looked exactly like yours. The guy who sold it met me in a dark alley. He had it under his coat. I think I paid $3 for it.

@woodscreekworkshop9939

4 жыл бұрын

Ron V you got a deal

Oh I just loved the printing!! If only it were that easy Yuchol! Good fix mate, I love those white aluminium oxide wheels, the do as you say make hogging off HSS very easy. I have a Record power 8" grinder which has a normal 25 mm wide wheel one side and a 40mm white alox wheel the other and I use it for all my HSS woodturning toolgrinding. And now that I'm doing metal turning, I will use it for any HSS bits I make. Nice video and thanks for posting.

@woodscreekworkshop9939

4 жыл бұрын

SAMRODIAN thank you!

I enjoy your content. Very practical stuff!

@woodscreekworkshop9939

3 жыл бұрын

Thanks

I thought that's just how bench grinders run. This is quite revelation to me! I can't wait to tune mine up now. Thank you, thank you, thank you! All the best, @HoneyOnWales

@woodscreekworkshop9939

4 жыл бұрын

DrewT thanks and good luck!

So now I know the difference between a cheap and a well made bench grinder other than motor size and power thank you 👍

G’day Yuchol. Good video with some common sense thinking thrown in, goes to show what a little detail work can do. Cheers Peter

@woodscreekworkshop9939

4 жыл бұрын

PGS thanks Peter!

Thank you, great video! I need to check my grinder and likely tune it up.

@woodscreekworkshop9939

4 жыл бұрын

anything you do to it will likely make it run better!

Great result Yuchol. I need to do this to my larger grinder. I believe some of the error is in the clamping discs, and shaft/hole size differences as with yours, but also on one end of mine is a wire wheel, which is horribly out of balance. I notice your grinder has a 5/8" shaft (15.875mm), but the wheels have a nominal 16mm bore (likely a smidge oversize for clearance). That works out to about 0.005" which accounts for at least half of the shaft size errors. They sent you the wrong wheels! :) With my wire wheel, I am struggling to remember, but I believe it came with a range of plastic insert bushings, which are just injection moulded, and which are not precise at all. At the time I set it up though, my most sophisticated metalworking machine was the lowly angle grinder, so I left it well alone. I should go back to it one of these days and sort it out properly. Thanks for the inspiration. And as usual - great lighting, audio, storytelling, and metalworking - great video overall. Cheers! Craig

@woodscreekworkshop9939

4 жыл бұрын

Thanks Craig. I am sure they included whatever cheap wheels they had.

That was groovy man! Nice job. Thanks for sharing.

@woodscreekworkshop9939

4 жыл бұрын

Thanks Yves!

It feels so good to watch that thing run so smooth 😅😎

@woodscreekworkshop9939

3 жыл бұрын

I know! 😁

I want that freaking printer. No matter what ever the cost. 😂 😂

@TheUnofficialMaker

Жыл бұрын

Naw, I tried it, just turns out paper copy...lol

Nice job. Great little project idea. 👍

Very well presented. My grandmother used to say worsher too.

Excellent video & very useful , and the humor was awesome !!! :-)

@woodscreekworkshop9939

4 жыл бұрын

Thank you sir!

Great video. I friend of mine showed me that trick years ago, worked then and it works now. Did you make the “warshers “ from cold rolled steel? Thanks,JB San Diego

@woodscreekworkshop9939

3 жыл бұрын

Yes, cold rolled steel 👍🏼

Nice fix . I can speak on a different level of balancing a wheel and that is many years of running precision grinders which need to be balanced for close tolerance work and the bench grinder is no different when wanting a sharp edge on a wood tool or a lathe bit for turning metal. Manufactured wheels for those grinders are made and cooked to different specs and a lot less balancing but still required. I to have used the same method you did with the same results. It didn't take out completely but it did improve. Now I have always wanted to side dress like I had to do in the shop ( not every wheel ) but there were occasions where it was needed to balance and get on with production. This process was done with a fixture that sat on a magnetic chuck . A 45 degree arm that was loaded with a diamond nib and manipulated by hand. This would true up the sides and make for a very well balanced wheel. My point being I would like to try this on my bench grinder to see if that would help true these cheaply made wheels.

@Gottenhimfella

4 жыл бұрын

There's another trick which would have helped correct the residual out-of-balance. Particularly in a case like this where the wheel has been trued when there was clearance in the bore (or in the more usual case where the wheel has worn out of shape) it's pointless trying to true it at any speed greater than about the first harmonic. Which is a LOT less than 1700, or whatever the base speed is on a bench grinder. In the following explanation, the word "you" is directed at anyone reading this who wants to get a really smooth running wheel. Ideally you should be able to touch a fingerprint to the wheel outer surface when it's running, and if you do it gently, and the dressing is geometrically perfect, you won't lose any skin. Here's how to get there (having followed the excellent suggestions in the clip, but if anything, make the centre hub of the flanges longer yet, for better engagement and improved squareness to the spindle. As pointed out in the clip, the shoulders on the spindle are so low as to be ineffective in this role, but the solution is to derive decent guidance from the cylindrical portion of the spindle. Just rely on the spindle's shoulder to prevent the flange moving inwards, not to hold it square. Don't worry about making the outer flanges wider, just the inner ones. The outer ones will partially end up on the male spindle thread anyway, but the inner ones will dictate the squareness of the wheel) To achieve the required low revs for dressing: Ideally you'd set up a temporary belt drive from a low speed motor at the far end. You can use a flat belt onto the other wheel. But here's a quick and dirty way which works well: Take a diamond nib in a suitable holder (they have a handle like a chisel, and a coaxial hole which is a close fit on the shank of the nib, and a clamp screw) Run the grinder just long enough that the sound of the motor is about half the rated speed (for the musically inclined that's an octave lower in pitch, but it doesn't matter a damn.) Let the speed run down and take note of the speeds at which the wobble is worst. These are harmonics, and you want to wait until it gets below the last wobbly speed before you start dressing. This won't give you much time before the speed is too slow for dressing, so just dress a single groove deep enough that the dressing tool is no longer being pushed in and out every rev. The root of the groove will then be more or less true to the spindle. Then repeat, making a series of close spaced grooves, almost touching each other, all made below the first harmonic speed. Truing is like turning grooves on a wood lathe. The toolrest must be close to the wheel, and apply a heavy enough inwards force to engage quite aggressively with the wheel, with NO side-to-side movement. The aim is to get rid of the off-centre material, and the reason to do this at slow speed is that, at higher speeds, the wheel will take charge and force the grinder spindle (and to some extent, the whole grinder) to "orbit" in such a way that the wheel is rotating, not about the centre of its hole, but about its centre of mass. It's the same thing you see in a spin dryer when above a certain speed it suddenly runs smoothly. That's because the spindle drive is suspended in springs to allow this latter mode to happen without strain. In a bench grinder, with no springs, there is a residual movement of the grinder. But more importantly, it's a waste of time dressing the wheel because it just perpetuates the out-of-balance, keeping the centre of mass in the same (wrong) place and wasting grit for nothing. Once you've got rid of most of the out of balance material, you can risk spinning a bit faster to get rid of the rest.Once you've got rid of ALL the vibration, you can fine dress at full speed. (ideally with a T-handle diamond-grit dresser, but a dressing stone does a fair job). If you've done it properly, you can apply the fingerprint test. If you have any doubts, use a bit of leather first, like the side or end of a heavy belt, gently touching the wheel. It's not as sensitive a test but your fingerprints will thank you. If you're trying to get really sharp edges on lathe or boring tools, you will be astonished how much better the result is from a perfectly smooth-running wheel. Provided the bearings are OK and you follow the suggestions in this clip and then this post, it does not need to be an expensive grinder to give superb results.

"Special Printer" haha loved it

Hey, great idea. I have a Dewalt 8" grinder I don't use because it walks across the table. I'm going to make some washers!! Thanks for the idea,

just another suggestion ... if you want your grinder to spin down faster after turning off the power... replace the switch with a double pole double throw (DPDT). Wire the motor windings to the center contacts, line and neutral to the on side contacts and the off side contacts need to be shorted together. This will give the motor regenerative braking and slow the motor faster when it goes to the off position. Allot of discount chop saws to this for safety reasons.... (just a thought) Thanks for the informative video.

@johncoops6897

Жыл бұрын

What you describe works for brushed motors, however these bench grinders are brushless inductive motors and I doubt that shorting the windings will make much difference to spin down.

Really good, in depth tutorial. But, I don’t have a machine shop at my disposal, what could I use to correct this problem.

@woodscreekworkshop9939

4 жыл бұрын

You can buy aftermarket washers for this

Well done, a true professional, thank you!

@woodscreekworkshop9939

4 жыл бұрын

Gene Fortney thanks Gene!

Enjoyed that. Did you look at shaft bearings and play at all?

@woodscreekworkshop9939

4 жыл бұрын

I didn't notice anything obvious and didn't dig too deep there because I wanted to start with simple things. Thanks!

I love it. Here in the Police State of Salina Kansas the older folks 60 / 65 and up. ( My parents) That whole generation says caish traish aish worsh wuvs wuff. It makes a person wonder what they were teaching in the first grade back then. Great video btw I'm subscribing. I like the way you thought this out. Then used the equipment and stuff on hand to turn a turd tool into a scookum choocher!

very illuminating. i can tell you're a TOT devotee as well.

I need that Damned Printer!!!

We have a HF 8" 3600 RPM unit at work that runs-out *way* worse than that did. I thought I might be able to make some new clampy things from pipe flanges. I never even thought to check the shaft for runout!

@woodscreekworkshop9939

4 жыл бұрын

Glad it helps

Noticeable less vibration. Great job!

It looks like I know what I am going to be doing this weekend. I thought I was going to have to replace bearings and have been putting off dealing with my grinders. Thanks for the motivation and congratulations on making such a great improvement on your grinder.

@woodscreekworkshop9939

4 жыл бұрын

Thanks Robert. Start with simple things and see where that takes you.

Wow I learned something pretty cool today, Thanks.

Excellent video and process. Love the jokes. Thanks for sharing.

@woodscreekworkshop9939

4 жыл бұрын

Thanks!

How do you round/balance a grinding wheel? Mines vibrates but with new wheel she runs zero vibrations.

Any idea where someone might be able to buy those turned 5/8 center hole "washers" if they don't have a lathe?

I've heard it said that a number of import tools are more like "80% complete kits" that need final fit and finish at home to be able to run well. It was interesting to see exactly how much variation there was in the shaft diameters in different spots considering they're supposed to be parallel . . .

@woodscreekworkshop9939

4 жыл бұрын

Everett's Workshop yes. It helps to know what you’re getting into 😁

Very informatively entertaining , thank you !

@woodscreekworkshop9939

4 жыл бұрын

steve golden thank you Steve!

Good job. Very nice results.

@woodscreekworkshop9939

4 жыл бұрын

Thanks Mike, I am happy with the result

Great job, should have shown us you truing up the wheels runout

Great job Yuchol👌

@woodscreekworkshop9939

4 жыл бұрын

Thanks Clarke!

I've gotten used to putting my foot by one of my feet by the bench grinder stand, so I don't it doesn't walk away when grinding something on it... I'll go true things up so it will stay put next time I use it. No fancy lath to make the big washers, but I do have a nice flat steel surface and a hammer. Cut up pop cans are one thousandth thick and make nice shims. So here goes.

Good video, generally accessible other than the lathe portion. Though I guess I could get a similar result by shimming the original washers with some paper to even out side wobble. Seems the shims in the insides of the stone made the biggest difference though, tomorrow project methinks...

@TC-qx2kg

4 жыл бұрын

marky701 And? Any luck?

@marky701

4 жыл бұрын

@@TC-qx2kg never got round to it lmao

Excellent work there. Well done.

@woodscreekworkshop9939

4 жыл бұрын

Thanks!

Love that printer! Great video... Bob

So what if you had clearance in your flanges and epoxy filled the grindstones and bored them on the lathe to fit the shafts properly? I don’t think that the bores of the wheels are always concentric .... also check for a consistent thickness around the stone ....

@woodscreekworkshop9939

4 жыл бұрын

Chris Braid I’m sure that method would also result in an improvement. I think anything you do to it would be an improvement 😁

Good idea to do some fine tuning on these grinders....My Rikon variable speed grinder looks like a newer version of yours

@woodscreekworkshop9939

4 жыл бұрын

Wayne Trethewey Probably it ia

That 'Powermatic' looks identical to my 6" Delta, which I purchased about 10 years ago. It has the exact same problems. Great job making it a useful grinder again! p.s., ...hi from eastern worshington.

amazing stuff

Can I do this using my hand crank drill and some chip board and sandpaper? I have some tin cans lying around too. I might need to borrow your coppier.

Are there any good 5/8 arbors on the market? I'm looking for big ones for my buffer.

And just think after 40 years of running a lathe I could have gotten a copier, man am I upset.enjoyed the video.Thank You Jake Bissel.

Keith Fenner made a vid about this same topic. He did what you did, plus, replaced the nuts on the shaft because they were threaded so crooked