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I don't know why so many people hating on this. I see no issue with it, it's sanding pretty evenly & there's no harm in trying to rectify some old rotors. What's the worse that happens ? It doesn't work out and you end up having to buy a new rotor ? No harm no foul, I'm gonna try this out.

Pretty sure some dead 1930’s and 1940’s mechanics are looking at your from heaven saying “kids think they reinvented the wheel !” Good job mate I’ll try it out

That's an awesome video, I did similar over the weekend. I used a brush wheel in a drill, didn't even think to put the rotor on the car, lol, brilliant.

It's crazy how people click on this video to give a thumbs down. You saw the thumbnail 🤷‍♂️.

Cool,glad someone else has done this. I used a belt sander, figured a long flat.

I just watched your video, it looks smart, am going to apply this for my TLX.. just wanted to ask how long this took you to finish Both front rotors ?

Been resurfacing rotors forever. As long as you do not reach minimum thickness I say go for it. The worst that can happen is that you don’t get the results and need to put a new disc on. Why not save some money. I can say that I have done my own for over 40 years on all kinds of vehicles with great result and no failure. You can waste your money on rotors but I like my money in my pocket.

Was looking for DIY way to 'skim' my discs rather than buy new, this is awesome video

I appreciate the video. Very informative especially for those DIY who want to save $$ where possible.

I've done this with a flap disk on a grinder. perfect for a quick cleanup.

I have done this with a flap sander on a 4.5 inch angle grinder. I did it with the rotors off the car by rotating by hand and continually moving the grinder being careful to sand evenly around the perimeter. The results were good.

Some ppl don't understand you gotta do what ya gotta do not everyone has money flowing out their hinends. I need to redneck resurface mine. I'm about to tackle my back brakes too. I'm sick of getting ripped off.

Second one looks really good. Very clever.

Very creative but my situation is a little different if have light groves no pulsation on the rotors could I smooth them out with just replacing pads with new semi metallic ones?

I pushed the brake pads Back and put sandpaper between the pad and rotor. After driving around the block a couple of times it was good as new.

Good job!

I don’t know if you know this but only one wheel will spin if it’s in the air on all vehicles without limited slip. If you stop the wheel that’s spinning the other wheel will then spin instead

I did thesametoday, afterwards i found yr video. Itworks great, ifu work with feel and good concentration, it works great!

You can also cut some 80 grit sand paper and place it between the pad and rotor and just ride your brakes a little bit.

I've watched things on KZfaq for years this was truly awesome video good job.

Thanks for posting this. I kinda had a similar idea of trying this but ur idea is better than my original. 👍

gotta admit that’s a good shine you got in those rotors

That's actually a pretty good job dude really.

Gonna try this on my CRX!

The darker coloration is the old pad material which would cause the new pad to jitter.The rust is a problem which in my case I am going to replace the rotors because it has pitted the rotor surface.

For the low grit stuff you can upgrade to a ceramic abrasive. Ceramics last longer.

going to try this! Thanks!

What's the result did it fix the problem?

I would just wrap a precision piece of solid square tubing with sandpaper and hold it up against the disc as it spins And keeping same amount of pressure at all times .

I have had 'luck' using a hammer [carefully] to first remove the rust and transferred pad material that forms around the inner and outer circumference of the rotor. With the rotor spinning, I then use sandpaper in a similar fashion to remove glazing and to smooth the surface of the rotor - finishing off by spraying it down with brake cleaner and wiping clean. This has worked consistently well without incurring damage to the rotor. Removal of the circumference rust first minimizes the sanding required to do so - saving both time and sandpaper.

Doesn't seem like a terrible idea it might be worth a try.

this can be done with a die grinder?

That is so creative.

That is not the way to resurface the rotor if the brake pedal is pulsating. The reason is pulsating is because the rotor surface is uneven....having that drill in your hand unsupported does practically nothing. For this to work, you need to mimic the actual setup of a lathe. The grinding wheel needs to move ever closer and closer while being securely fasten so the high surface area gets sanded and leaving the low surface untouched. You can't do that while holding the drill.

Use a grinder take down the ridges. Then use a vibrating mini mouse sander with 40 grit pads on flat surface. Disk then checked on kitchen work surface for trueness . Works perfectly. Be safe doing this.

It looks like you sanding at an angle. Isn't it supposed to be straight surface sanding? How are you doing it?

Somehow I'm back here 2 years later 😂 still haven't tried this but might tomorrow.

Have you checked pre- and post-work runout? How the uniformity changed?

Was thinking to do the same with my f150 using 2 2x4's with sand paper attached to evenly sand both sides at the same time..or 1x4's or something that's flat. Glad to check KZfaq first and to -block- the piston from moving in when it's removed..and don't use brakes while resurfacing. So much better than the guy using a small round sander on a flat rotor on the table.. possible uneven sanding.

My problem with this is a it’s probably not going to be an even cut And 2 its most likely going to have a rough stop, ice seen it happend, although you broke the glaze the finish winds up bring to rough and has harsh stoping

Seems to me a few measurements should be taken at different spots to verify uniform thickness?

Awesome👍 its better to figure out and try to fix things yourself. I usually take them off while the car is on jack stands, take the rotors to Brake Masters and have them machine it for $10 each but if this works really well I rather do them this way.

Rear wheel drive or FWD

I have a lip problem , caused by the pad not covering the whole rotor , this would be good for that

I give it a like. I see you are still getting negative comments from people about a 2 year old video that obviously did not read any of the previous comments. You try to help someone out, and see what you get. Next time anyone tell you to get them turned just tell them "OK send the money and I will".

I was scratching my head and scratching my nuts trying to think of a way to set the rotor on a balanced spin and I hadn't thought of this.

I have the same car same problem But I’m going to go shop to get them turned

This is so sketchy. I love it. Do you think a sanding block and sandpaper would also do the trick? Might be a good way to lose a few fingers.

can you explain in more detail the type of brake pulsation you were getting.

Well, i liked this vid, so i tried it out for myself...unfortunately my pulsation is still there 😔 Was hoping it would work! They look really good and rotors are only about 3 years old. But it did not fix my pulsation. Might take them in to get turned if its not the same price as new rotors.

It has been a few months now and the brake pulsation has not come back. This procedure really works! You can get the 3" sanding disc kit at Harbor Freight: www.harborfreight.com/3-in-surface-conditioning-kit-19-pc-60752.html

what i found out about brake pulsation. i bought drilled rotors never warped and any gas or pad residue goes into the holes then ejected

Can it be done on bigger trucks like f250 or e250

I would only recommend using rough grit on the lip and the inside. I wouldnt go below 240 for the surface for sure or use the scotch pads for it that were included. That way youll only skim the surface. Also make sure you put your drill at 90° because like you were holding it id guarantee that the surface isnt flat anymore. Anyways howd it go, happy with the result?

I did this before, just popped in my head one day,damn this is dangerous but ohh well, it actually turned out ok

Would clean w/brake cleaner, take a few measurements before starting & after.. Would finish up with some emory cloth for minute pits & final cleaning..

That’s great DIY as long as you don’t drill through the rotors because they crack if someone hacked into them

did u do the rear rotor too ????? put it on front drive to do it ??????

You’re burning through sandpaper faster because of the heat caused by the combined speed of the turning rotor and your drill. Heat kills sandpaper

i paid $90 to do this at the shop. Next time, i will do this Thank you sir respect

I am a fan of harbor freight but their sand paper is extremely bad. It gets clogged very fast and fails to remove material. Project farm has an excellent video comparison the different sand papers. Definitely go with the 3m paper, it's better by miles.

Will you do the same thing on the other side?

Actually pretty smart , I probably wouldn’t do it only because it’s only $5 a rotor at my local shop to have them resurfaced professionally, But it’s not a bad idea if you wanna save some money

Usually pulsating brakes is a clear sign of a warped rotor or drum. I suppose other factors could contribute... I live in a hilly area. With some smaller mountains. Bad pothole roads. Gravel roads. Salted snow covered in the winter. Heavy rain and hot humid in summer. Our cars dont last long.( south of buffalo ny near p.a. boarder) most cars have holes in the floors within 10 years. And suspension systems take a beating. Almost any brake job i have done as a mechanic i have noticed the pads and or slides are frozen in place. This has some to do with others almost always using the wrong lubricants. ALWAYS use silicone grease. But our environment just degrades things very quickly. Because of the hills no matter what type rotors i have used i find that they usually become warped after the first few drives. Brake noises are usually from like mentioned before siezed pad ears or slide pins. Also embedded material in the rotors and or pads. Causing glazing. If you ever have a squeal but the pads have alot of surface left. It is best to clear the rotor like this video. Or to a lesser extent with just some emory clothe and brake cleaner. Also clean the pads. Soak with brake cleaner and wipe with a rag. Then take sand paper or emory cloth and scuff the surface and spray again with brake clean. Do this a few times until the pad appear rough and free of loose material. Most mechanics dont typically do this. But i always have. It is my remedy for brake chirp. I do the same with drums. Often with drums, since thet hold most of the brake dust inside they become embedded. My father told me years ago guys would do this. But all they did was put the brake pad on a concrete flood upside down step on it and scratch it back and forth across the floor.. Haha. That works too. Just a dirtier less controlled method. Risking getting oil or whatever else in the pad..

Great idea to have those spin while your surfacing them

can always put the other rotor on the side that spins~

This is not a new concept. Old-timers used to do this on a lathe after cutting the rotors to ensure good bedding. I've never run into this issue personally. I normally end up replacing the rotors due to wear, rust and time. Normally I just knock the ridges of and pad swap till the rotors are toast. Brake pulsation used to be a common problem due to pad material. Unless you have a sized caliper and trash the brakes, 99 % of the time its pad material on the rotors that is causing the pulsation. If you have fairly new rotors this is an option. On older rotors I'd not waste my time. They are not that expensive. Shops won't do this, so if you have some time you can play around. You don't really need to grind. You just have to skim the surface/put a scratch trough it and bed the pads. Also don't cheap out on the pads and you won't have this issue in the first place.

While it's on jack stands and in the drive position, why does only one side spin while the other side remains still? Even after removing the brake pads on both sides of the wheel, only one side spins while the other side remains still. I need to have both sides spin simultaneously.

Soooo, how about an update on whether or not this worked ?

😂 u said it's red leck shh 🤫 Heck naw that's called do it ya self grown man living ... Appreciate the video...

am I the only one who saw rotor up and down pulsations without any pads? as if it is mounted off center or not parallel. I would check of there is anything between rotor and mounting plate like rust

Do you think it was necessary to run the car to turn the rotor? Could the same service be done with rotor off the car and held stationary in a vice?

Honestly I did this, it didn't hurt anything, doesn't feel warped or anything. I didn't do it on the car.

Little risky..but that is one way to get the rotors to spin. Most guys just take the rotors off and sand them down with 100 or 80 grit. Some years ago I talked to a brake guy and he said he just uses a wire wheel type brush on his drill to clean the surfaces of GOOD rotars. I tried it on an older Acura TL I had and it seemed to work just fine when I put new pads on. BUT good job buddy. Anything you can do in the garage on a weekend afternoon to save yourself 500 bucks is time well spent. Brakes Plus just quoted me 600 to do the rear brakes on my Explorer! lmao...They want to remove my heavy duty high performance rotors I put on 4 years ago and toss them...then put on the OEM stuff. I am like WTF dude. No way. Give me the car back and I will spend a few hours and 50 bucks on the pads and be back on the road with $550 still in my bank account.

Nicely done!! 👍

Can you do this with high carbon rotors?

Pulsing brakes is caused by a thickness variation of the rotor. Always buff both sides of the rotor hat and hub clean of rust and debris. A lateral runout caused by rust trapped between the rotor and and hub will cause a thickness variation as the rotor wears. Lateral runout can also make the pads wiggle back and forth in the bracket creating a squeaking noise and extra wear on the pad locators.

With the angle your holding the drill at you should be doing it at the other side of the rotor

I would say you can see the scratches on the surface. Does the disc still have the minimum thickness and is it balanced? In some countries in our world it would be illegal. This could be done on the disc of a farm tractor, but not on a street-legal car!

Saved dat moneys.

Lmao mint 👌🏼

Do it at the machine. Grinding by hand may cause vibration while braing.

Why do people use edge and not use tool flat..?

Pad shudder is caused by the pads moving in pulse with a warped disc. Uk price for a skim £10. Price for a common rear disc new. Not really much more.

works

My friend did it for me on my wife 08 crv exl. And he didnt with the car off no need to have it on and spinning you do it manually.

i think a belt sander would work better, or take it to the auto part store and have them turned for 5 to 10 bucks

“You can see the other side isn’t moving at all” … thaaaaats called front wheel drive my dude haha

The brake pulsation is probably because the disc is warped. You can actually see it as it revolves.You need new discs really. They are not that expensive and will save time and last much longer. Sanding the discs down like this takes miles off their lifespan.

Question, The question... Did it work?

Anytime you do new pads you must ALWAYS DO A PAD BREAK IN. Find a safe spot and get your car up to 45 mph and slam on the brakes. Do this 3 times , let them cool and then do it again 2 more times. Your trying to get the new pad material to transfer onto the rotor. Every pad manufacturer has a break in process on their website too.

Con una lija plana después vea si hay surcos

O’Reillys does it for 10$ a rotor didn’t know either but now you do too.Call and find out when and what location the person who does it will be there and yesssss you can thank me later Lol

that's the ROTOR-ROOTER....

there should be a shift lock release so you dont have to hit the brakes just fyi

Mask or breathe the dust?

Autozone have Duralast Camry rotors for $26.99 (Feb 2022)

3:22 This part of the video looks like you're forging a Sonic Ring

This how brake places clean it anywYs