I no longer even shop around for sand paper, cut off discs, abrasive discs etc. If it says 3M/cubitron I bite the bullet and buy it. They just work so much better and longer.
As I'm nearing the end of a car build, I gotta say I'm a big fan of 3m. If there products don't work right ,you're doing it wrong or using the wrong materials. Sure it's pricey, but I can only afford to do this once. Might not be a fan of all the toxic crap that's left over from their chemical production , but their products just flat work.
The reason the Amazon disks are "cavitating" is, they used a cheaper plastic. It's getting hot quicker and the hot plastic is grabbing the surface you are trying to clean. 3M's version must use a plastic with a higher melting point.
They have to be, because I've loaded them as hard as you can with a pneumatic, right angle, die grinder, Dotco brand, and they would never melt. Usually you can tell by the transfer of material from the bristle disc, to the aircraft skin. But they didn't mind. They don't work efficiently at high loads, or high speed. They work best if you don't spin them to point that they are starting to flare out, at least that's been my experience with them.
the rol-loc discks have a firm backing pad that the disc's attach to. The Amazon brand has its own built-in flimsy backing pad that allows it to flex more than necessary which causes cavitation
i always pay extra and buy the better one. not just the quality but more self pride and class is attached when quoting work. Getting paid allot when skimping on quality slowly degrades your self worth. you end up feeling wrong and the client can hear uncertainty in your tone. paying extra usually improves your memory too, you don’t missplace as much
i used to be a mechanic. I am retired now, but I have a couple of the 3M ones that I used to use almost daily. I NEVER wore any of them completely out. I do have 1 that has about 1/8" left on it, I am sure that the 3 or 4 of them that I have will last me the rest of my life.
I haven’t used the cheaper ones, but the 3M is really good, and lasts. The Amazon green copy has parts of the bristles coming off on the second test. With the permanent (it looks) splaying and the breaking off of the bristles, it doesn’t seem like much of a bargain. I don’t see a reason to stop using 3M. Often there’s a reason why something costs more and it’s not because of the brand name, it’s because of the quality. It’s usually because of the quality as to why a company becomes a brand name in the first place.
Stuff like this really puts things in perspective when it comes to 'bang for your buck'. Thanks for doing the comparison and everybody can agree that 3M Roloc Bristle Disc juice is definitely worth the squeeze. The 3M Radial Bristle Discs designed for pedestal grinders / polishers definitely are as well, albeit the prices are eye watering.
Bristle discs have been around well over a decade. I remember using them regularly well over twenty years ago, roloc bristle discs. We used them for buffing of aircraft skins for corrosion removal, and preparation for repainting. They worked great on thin, delicate aluminum, but there are far better methods for cleaning things that are harder and heavier.
Yes, there are more efficient buff discs, there's a correct tool for every job, but when working on engines, the bristle prevents abrasive contaminants from the disc from entering the engine. The aluminum oxide rolocs are the worst thing you can use on an engine
bro, that's not cavitation, if anything its chatter. cavitation is when gas bubbles form in liquid because of change of pressure. Definitely going way too high on the rpm, the bristles shouldn't be flaring out like that.
Cool fact is that by default, we get to see the little M12 mini grinder put through the wringer. I used those 3M discs, both the bristle discs and the regular Scotch Bright abrasive discs with great appreciation for their abilities. I will say that the rollock disc most efficient if you keep the RPMs down. I'm not surprised to see the knockoffs not hold up to the riggers of professional use. In my past experience they weren't worth the purchase price.
The m12 die grinder might be the most used tool in my fab shop. They're not cheap, but I just picked up another brand new one, in the box, on OfferUp for 120 bucks. If you don't have one, get one.
I can say that the most used tool that I own, and trust me, I have a pretty good collection, is my M12 fuel right angle die grinder. It's in my hands probably 25% of my time working, and a pretty good amount of my time playing, probably more than it should be. But it's so easy to reach and grab it. I do wish they would make a little stronger as they tend to get hot and shut down on you, if your loading it too much.
Bristle discs work much better at slower speeds, especially on sealing surfaces to keep it flat. I think it’d be worth doing another video at a slower speed. It extends the life of the bristles and is a lot easier to control. I use them with my compact, low power Mac die grinder and barely even squeeze the trigger. I’ve only used the 3M ones, so I can’t comment on the Chineseium ones.
@@Eduardo_Espinoza the bristle discs? No, they don’t come with instructions. But just like with any tool you use often, you learn how it operates best. The less fanning of the bristles, the better. Use minimal downward force. Basically you want the tips to contact the surface and let it do the work. Especially while using the white disc on aluminum like oil plan or timing cover sealing surfaces.
Back in the foundry, the bristle discs we got actually had heavy sleeves on them to keep the bristles from splaying out. But they weren't roloc, they were hard mounted to a 1/8" shaft. Also the discs were only about 1" diameter and didn't look plasticky like these.
The 3M Roloc Bristle Discs were created over 25 years ago at the peak of GM 4.3L and 3.1L intake gasket failures in the mid to late 90's. Not sure if they were created specifically for that application but a TSB does state the exclusive use of the Bristle Discs instead of the Scotch-Brite Discs if my memory is correct. The Scotch-Brite material was getting into the engine and destroying the crankshaft and bearings.
If I can find 3M and it's reasonable I will always grab those... but sometimes there are things where I just need to use it once or twice and I'm not paying $86 for it... Depends on what I'm doing... These bristle disks are great though There isn't much of a price difference in this particular product but that's not always the case....
I'm curious if the cheap ones have a lower intended rpm for use or if they just don't use as resilient materials as 3m does. Sometimes it pays to buy the more expensive consumables, but it doesn't matter how good a tool is if it's designed for one use case and uses for another.
Nice comparison and good video. Useful and quite consistent comments here on the quality, too. I've not seen these bristle brushes before and I'll be getting some. I've been impressed with some none 3M Roloc flap disks and Scotchbrite-equivalent hard-ish pads. Not experienced the grabbing on the flap and pads I have but I understand the bristle brushes you have here are not really useable as they seem to grab and overheat and aren't stiff enough. Roloc rocks! I was also impressed with the angle tool. I use air for this application and it's expensive to run compared to battery equivalents. I need to find an equivalent that's equally compact and controlable. That red thing seems good!!
Great comparison shootout!! 3M makes an excellent product. Some of the import abbrasives are good, some are not. Cavitation does not mean what you think it means.
Why are you going so fast, especially on such harsh corners and sensitive surfaces? Those speeds needlessly beat up both bristle discs and the work surface. The amazon one was pretty clearly outclassed at high speed the moment you went full bore (which might make the 3M one better at high speed removal), but that doesn't mean it won't work great to slap on a drill to knock some rust off for maintenance/welding/restoration. Too bad 3M doesn't sell inexpensive 3 packs (1 of each)
This video shows my findings as well. The 3M bristle discs are best. However, if you are using scotchbrite or sanding discs, the Amazon or Harbor Freight discs work nearly as well for a huge savings. I bought a fake roll lock kit on Amazon with a slew of scotchbright style discs and two spindles for cheap. The I found that the larger 3" and 4" scotch discs from HF fit perfectly on the cheapo roll lock spindle and then really work well.
@@1stWorldProblemsSolved yep ,time vs money. The cheap stuff has you futzing with it wasting time or replacing it more often (also taking time) so for a little more money ,why not basically purchase less headaches✌️
From my experience with using white on both aluminum heads and steel water pump surfaces the 3m works better and lasts longer. Only downfall of 3m is they seem to be more brittle and will break off outside edge bristles if get caught on an edge. The Amazon ones are more flexible and fan out in a hurry but work okay on large flat surfaces without edges/holes
I have a green and a white 3m bristle discs, spent 10 bucks each over 3 years ago, I'm an auto tech, so yes, they get used and are still a long ways from wearing out
Thanks, I definitely had the same amazon ones as you and experienced the same level of low quality. This convinced me to only use them on junk parts for fun and use 3m where it matters.. and to lower the speed even more
A long time ago, probably, twenty years ago, one of my painters and I, sat down and did the math on 3M products. Vs everybody else... Because we had to. Some crooked salesman from Sherwin-Williams were trying to fill our shop with their garbage. And their whole sales pitch, of saving 6% on our materials, was absolute nonsense. We were saving way more than that, on primer alone. So we did the math. And tested the product. Sandpaper, roloc discs, adhesives. And what we concluded was. 3M, is one of the best partners you can ever have in the automotive repair industry. Their products are way higher quality. And have way more, durability and everybody else. Especially with the sand paper. I can't tell you, how many times over the last 25 years, these salesmen have come into the shop, pushing the same garbage, over and over again. And the sales pitch is always the same. Our product is one-third the cost of 3M. Yep. They're absolutely right. But by the time you get done using three times more of their product, then you would a 3M product. The cost is exactly the same. And yes, I have had, carborundum, and mirka Rolocs, come apart while I was using them. And caused me to repaint, 8 cars. Because that disk, everything in the shop, when it came off the mandrill. I let me tell you, nothing pisses off a technician more, then having to do free paint jobs, on a hood, or a roof. Because that piece of crap exploded. After that incident, I took all of that garbage, that we had in our shop. And threw it in the trash. Yes, my boss was pissed. Yet, he wasn't the one that had to clean up that mess, for free. My shop at home, only has 3M products in it. And those products, help me maintain, my Craftsman status as an auto body tech. And because of those products, I maintain a less than 1% come back rate, over the last 30 years. And I have quite literally used their products, on thousands of cars. And they have yet, to let me down. In fact, every time I have interviewed for a job. I have gotten the manager out of his seat. So I could look at the products they use. And if they aren't using 3M... I'm not working for them. You ain't turning me into a cobbler, cuz you can't afford sandpaper. And by the way, the biggest indicator, that your shop, is failing. Is when your management decides to start using inferior products. If they're attempting to cut costs, it's because, they are, tapping into their materials cost, to create the illusion of profitability. I've seen that cycle repeat at least a dozen times. And when the rest of the community finds out that, a shop has decided to use the inferior products. We all know... They're only weeks away from closing their doors. Their Titanic is sinking, and they're looking for a life raft. And by the way, I've also noticed another trend with these body shops. They're trying to do away with the commission employee. And put them on a straight hourly rate. Which is another, very good indicator, they're on their way out. Good labor ain't cheap. And cheap labor, ain't good. Especially, in the auto body industry. You get exactly what you pay for. And if your business model doesn't include pain, for good technicians, and good products. You might as well just give it up.
So the policy in 3M marketing department is to make it inconvenient and confusing to purchase their product. Did they hire the folks from over at budlight marketing?
One more item to note the Amazon brand was leaving yellow and white residue because the abrasive fingers where more than likely melting because of the friction cause by the abrasive fingers laying down or sprawling out.
Another excellent review! I think I would purchase both, purchased a cheaper ones because they’re not expensive, but purchased the 3M ones for when I really need performance.
I use those 3M green bristle discs gently. Too fast and those bristles are forced outward. It doesn’t take much to get the job done. I switched years ago to using a green 3M bristle disc on engine mating surfaces such as a cylinder head or the block since I’ve read about Scotch-Brite Roloc disc particles causing internal engine damage. Actually they called ‘em “surface conditioning disks” but there are plenty of other surfaces I can use Rolocs without causing issues. On a similar subject, just before the pandemic, I bought a box of each color of Scotch-brite hand pads and can’t help but wonder if counterfeiters managed to perfectly fake those 3M products since the box labeling was perfect but the printing on the individual pads were barely legible, and I noticed a difference in texture. I’m not sure what happened to the easy-tear perforations but they were non-existent. Maybe 3M just made some changes.
In my experience with abrasives overall, cheap abrasives of any kind suck to do any real work with. They definitely might work for random stuff in the garage but if you’re doing it for a job it sure sucks changing flap disks a thousand times.
I've done some research. The bristles really don't like edges. But I also haven't found an abrasive that does other than sandblasting. And I don't like sandblasting. It's a circular relationship.
3m designs their product to not remove material or as little as possible if your working on a head gasket surface or intake plenum be extremely careful because flatness it key to sealing that surface and if you remove too much material that surface will never seal properly so 3m is definitely the way to go if your a mechanic or auto technician , so have a good one
Man, I'm 6:30 into this video and I have a basic math lesson on how much the discs cost. And we haven't even started with the Chinese discs. Way to waste your viewers' time!
I know this is about the bristle disc's but how do you like and would you recommend that Milwaukee angle die grinder and do you happen to have the straight also and what are your thoughts on that also. Have been thinking about getting them for awhile but you know $$ is tight and don't wanna throw any away, Thanks for any reply on them from anyone using them
I had good luck with the cheap amazon roloc discs and scotch bright pads for prepping my engine for my jeep's LS swap. I didn't have any of that fanning out or smearing like you are getting, guess different vendors have different quality.
Think about the efficiency you're losing with the cheap one, all the repositioning and effort to keep it from flying off to the side, now add it up throughout the day times that by the work week then times that by how many weeks of the year... It truly does add up
I love the 3m ones but when working with thin sheet metal the get cut up and wear lot faster. I only use them when I know this won't happen because they cost so much.
I first bought a ''fake'' one, it was tearing itself apart without even touching the workpiece... even at low RPMs... Then I bought a bunch of 3M's, they are way better! But the 20k or 25k RPM is not advised, it will self-destruct!! The bristles will come flying of!! Other than that, they are great!! It's a great addition to the tools used in the Milwaukee (love the 90degr and straight grinders)
Happily gushing about the 3M while dissing the cheapies. Well, I guess that's expected. Anything which can make the job easier certainly grabs your affection. I saw how quickly the Chiwanese discs were breaking down quite quickly. 3M sure looks like the easy winner there. Now show us some Pferd victograin grinding discs for the angle grinder. They're absolutely astounding, too.
Good info but what you were calling cavitation is simply bouncing. Cavitation is an effect always associated with movement of fluids (think air bubbles in water supply and going through an impeller of a pump. This could cause cavitation.)
I personally mostly use 3M products, and you do get what you pay for, at least with them? I also like Osborne wire wheel products? I still will use USA manufacturers for abrasives and the like? Tried HF sandpaper, and they can't even do that well, in my opinion? Good job, keep endorsing USA anything, as far as I'm concerned?
Was kinda surprised when I got some standard Hercules 80 grit wet, it didn't crumble. It's not labeled for wet sanding, but after that I was using it that way. Because sanding fiberglass dry really sucks. It wasn't nearly as good as 3m though.
There's no replacement for original 3M products. One often resorts to other makes not for price per se, but as you mentioned, some products are a pain in the butt to get. Being an "octopus" company that has sooo many great products hurts distribution and off the shelf availability for sure, they have so many good, excellent and irreplaceable products that even large distributors can't sink in a whackload of cash into stocking everything. IMHO the only company that's near to "par on par" with 3M when it comes to abrasives it's Norton.
The Amazon special is cutting more aggressive because if you notice the filaments fingers are laying down and there is more ceramic abrasive making contact with surface, but the reason its laying down is because the material is not as stiff or long lasting this is also causing it to grab. I'll bet it doesn't last anyways near as long as the 3M disc, I would be afraid that the fingers on the Amazon brand might even fly off, after a short time the Amazon brand looks like your using a mop. Go with the 3M if your more serious about getting a good job and longevity with your abrasive than with the price.
Thank you so much for the die grinder collet holder wrench hack. First thing tomorrow I’m putting one in the vise and bending her over. That will solve many headaches haha
Feels a bit biased, when you cleaned the painted surface you handled the machine differently on both discs. The cheap one you were a lot more sporadic and aggressive, which caused it to go all over the shop, however the 3m you kept a lot more confined to the centre areas and seemed to hold it in a more controlled fashion. That’s before we account for the almost 50% price difference. They need to be ran slower, so keep the control. I kinda feel like the 3m ones have a higher rpm range, whereas the cheaper ones need to be ran at about half the speed.
You caught the edge of steel much more with the non 3m. It’s hard to tell if you were doing this or the the non 3m disk was doing it. To me … it look like it was more you. You did not seem to work the edge with the 3m as you did the non 3m.
I made this same mistake on Amazon. Bought the cheap version of the white bristle discs and they were basically plastic bristles with no ceramic. The just melted and flew everywhere 😂 absolutely junk
Surprising to me that the Amazon special seemed to actually clean faster. That said, it clearly won't last as long. 3M generally makes good stuff, but the price premium is usually too much for me.
Fooling around with inferior abrasives is too much for me. So I pay the premium for 3M products gladly. Gets me done faster. I'd rather be looking at two days of sanding than a week of it. I change abrasives like they're going out of style too. Up this one's getting dull, switch! Wearing tools out adds up too.
I no longer even shop around for sand paper, cut off discs, abrasive discs etc. If it says 3M/cubitron I bite the bullet and buy it. They just work so much better and longer.
As I'm nearing the end of a car build, I gotta say I'm a big fan of 3m.
If there products don't work right ,you're doing it wrong or using the wrong materials.
Sure it's pricey, but I can only afford to do this once.
Might not be a fan of all the toxic crap that's left over from their chemical production , but their products just flat work.
I use the 3M Cubitron or the Pferd stuff. They both just last forever and are well worth the money.
Buy once cry once
If sixtyfiveford says it...... Stamp it, send it and just buy it😅😅 👍👍👍
3M, Pferd, and Norton is all I get.
A 5 minute video spread out over 23 minutes! 3M for the win for anyone who doesn't have time to kill.
SHOCKER!! hahahaa sorry
10:00 is when he first starts using them. Your welcome
Ford calls for white 3m bristle disk to clean mating surfaces. The 3m disks run circles around the knock offs.
I work at a Kenworth dealer. Paccar requires the white disk also
Who do fck cares what for Ford is calling??! Like a Ford is significant in any thing!!!!
The reason the Amazon disks are "cavitating" is, they used a cheaper plastic. It's getting hot quicker and the hot plastic is grabbing the surface you are trying to clean. 3M's version must use a plastic with a higher melting point.
They have to be, because I've loaded them as hard as you can with a pneumatic, right angle, die grinder, Dotco brand, and they would never melt. Usually you can tell by the transfer of material from the bristle disc, to the aircraft skin. But they didn't mind.
They don't work efficiently at high loads, or high speed. They work best if you don't spin them to point that they are starting to flare out, at least that's been my experience with them.
@@AlwaysBeSmart674 they're not, it's made from hard nylon with aluminum oxide mixed into the injection plastic.
the rol-loc discks have a firm backing pad that the disc's attach to. The Amazon brand has its own built-in flimsy backing pad that allows it to flex more than necessary which causes cavitation
i always pay extra and buy the better one. not just the quality but more self pride and class is attached when quoting work. Getting paid allot when skimping on quality slowly degrades your self worth. you end up feeling wrong and the client can hear uncertainty in your tone. paying extra usually improves your memory too, you don’t missplace as much
i used to be a mechanic. I am retired now, but I have a couple of the 3M ones that I used to use almost daily. I NEVER wore any of them completely out. I do have 1 that has about 1/8" left on it, I am sure that the 3 or 4 of them that I have will last me the rest of my life.
I haven’t used the cheaper ones, but the 3M is really good, and lasts. The Amazon green copy has parts of the bristles coming off on the second test. With the permanent (it looks) splaying and the breaking off of the bristles, it doesn’t seem like much of a bargain. I don’t see a reason to stop using 3M. Often there’s a reason why something costs more and it’s not because of the brand name, it’s because of the quality. It’s usually because of the quality as to why a company becomes a brand name in the first place.
this video makes me appreciate the original so much more.
I use the Milwaukee right angle with those disks at low speeds, work great, less cavitation, the green is amazing at what it will take off!
And the brush doesn’t fan out
Stuff like this really puts things in perspective when it comes to 'bang for your buck'. Thanks for doing the comparison and everybody can agree that 3M Roloc Bristle Disc juice is definitely worth the squeeze. The 3M Radial Bristle Discs designed for pedestal grinders / polishers definitely are as well, albeit the prices are eye watering.
I have never been so heart-poundingly excited about something so mundane. Just saw you uploaded this video after commenting on your short.
Get a life.
Bristle discs have been around well over a decade.
I remember using them regularly well over twenty years ago, roloc bristle discs. We used them for buffing of aircraft skins for corrosion removal, and preparation for repainting. They worked great on thin, delicate aluminum, but there are far better methods for cleaning things that are harder and heavier.
I was using the bristle discs at Boeing in the late 90's.
Yes, there are more efficient buff discs, there's a correct tool for every job, but when working on engines, the bristle prevents abrasive contaminants from the disc from entering the engine.
The aluminum oxide rolocs are the worst thing you can use on an engine
@@billseivers3528 I was using them in the 90's as well in my boces auto mech classes. 😊
bro, that's not cavitation, if anything its chatter. cavitation is when gas bubbles form in liquid because of change of pressure. Definitely going way too high on the rpm, the bristles shouldn't be flaring out like that.
Cool fact is that by default, we get to see the little M12 mini grinder put through the wringer.
I used those 3M discs, both the bristle discs and the regular Scotch Bright abrasive discs with great appreciation for their abilities.
I will say that the rollock disc most efficient if you keep the RPMs down. I'm not surprised to see the knockoffs not hold up to the riggers of professional use. In my past experience they weren't worth the purchase price.
Exactly, speed kills bristle discs. Also makes it more controllable at lower speeds.
The m12 die grinder might be the most used tool in my fab shop. They're not cheap, but I just picked up another brand new one, in the box, on OfferUp for 120 bucks.
If you don't have one, get one.
I can say that the most used tool that I own, and trust me, I have a pretty good collection, is my M12 fuel right angle die grinder. It's in my hands probably 25% of my time working, and a pretty good amount of my time playing, probably more than it should be. But it's so easy to reach and grab it.
I do wish they would make a little stronger as they tend to get hot and shut down on you, if your loading it too much.
They go back over twenty years. An Air Force aircraft refubishment program I was involved in was using them in the early 2000's. Excellent tool.
Bristle discs work much better at slower speeds, especially on sealing surfaces to keep it flat. I think it’d be worth doing another video at a slower speed. It extends the life of the bristles and is a lot easier to control. I use them with my compact, low power Mac die grinder and barely even squeeze the trigger. I’ve only used the 3M ones, so I can’t comment on the Chineseium ones.
18:45
Did yours came with instructions?
@@Eduardo_Espinoza the bristle discs? No, they don’t come with instructions. But just like with any tool you use often, you learn how it operates best. The less fanning of the bristles, the better. Use minimal downward force. Basically you want the tips to contact the surface and let it do the work. Especially while using the white disc on aluminum like oil plan or timing cover sealing surfaces.
3M products like Roto loc 2in or 3in buffing pads or bristle pads is the only stuff I use.
Back in the foundry, the bristle discs we got actually had heavy sleeves on them to keep the bristles from splaying out.
But they weren't roloc, they were hard mounted to a 1/8" shaft.
Also the discs were only about 1" diameter and didn't look plasticky like these.
Most high quality stuff with US and European companies is made in China. But it's the licence that counts. 3M factory is in China.
The 3M Roloc Bristle Discs were created over 25 years ago at the peak of GM 4.3L and 3.1L intake gasket failures in the mid to late 90's. Not sure if they were created specifically for that application but a TSB does state the exclusive use of the Bristle Discs instead of the Scotch-Brite Discs if my memory is correct. The Scotch-Brite material was getting into the engine and destroying the crankshaft and bearings.
If I can find 3M and it's reasonable I will always grab those... but sometimes there are things where I just need to use it once or twice and I'm not paying $86 for it...
Depends on what I'm doing... These bristle disks are great though
There isn't much of a price difference in this particular product but that's not always the case....
I'm curious if the cheap ones have a lower intended rpm for use or if they just don't use as resilient materials as 3m does.
Sometimes it pays to buy the more expensive consumables, but it doesn't matter how good a tool is if it's designed for one use case and uses for another.
Nice comparison and good video. Useful and quite consistent comments here on the quality, too. I've not seen these bristle brushes before and I'll be getting some. I've been impressed with some none 3M Roloc flap disks and Scotchbrite-equivalent hard-ish pads. Not experienced the grabbing on the flap and pads I have but I understand the bristle brushes you have here are not really useable as they seem to grab and overheat and aren't stiff enough. Roloc rocks! I was also impressed with the angle tool. I use air for this application and it's expensive to run compared to battery equivalents. I need to find an equivalent that's equally compact and controlable. That red thing seems good!!
Great comparison shootout!! 3M makes an excellent product. Some of the import abbrasives are good, some are not.
Cavitation does not mean what you think it means.
Why are you going so fast, especially on such harsh corners and sensitive surfaces? Those speeds needlessly beat up both bristle discs and the work surface. The amazon one was pretty clearly outclassed at high speed the moment you went full bore (which might make the 3M one better at high speed removal), but that doesn't mean it won't work great to slap on a drill to knock some rust off for maintenance/welding/restoration. Too bad 3M doesn't sell inexpensive 3 packs (1 of each)
This video shows my findings as well. The 3M bristle discs are best. However, if you are using scotchbrite or sanding discs, the Amazon or Harbor Freight discs work nearly as well for a huge savings. I bought a fake roll lock kit on Amazon with a slew of scotchbright style discs and two spindles for cheap. The I found that the larger 3" and 4" scotch discs from HF fit perfectly on the cheapo roll lock spindle and then really work well.
I really appreciate this video. I have always wondered if the cheaper ones were worth it or not. I’m sure they have their place 🤔. Great video
ya in a trash bin
@@1stWorldProblemsSolved yep ,time vs money.
The cheap stuff has you futzing with it wasting time or replacing it more often (also taking time) so for a little more money ,why not basically purchase less headaches✌️
Can you test flap wheels and non woven pads
From my experience with using white on both aluminum heads and steel water pump surfaces the 3m works better and lasts longer. Only downfall of 3m is they seem to be more brittle and will break off outside edge bristles if get caught on an edge. The Amazon ones are more flexible and fan out in a hurry but work okay on large flat surfaces without edges/holes
Great review and good timing. 52% off at $12.00 for the 3M green. Amazon prime for the win. 👊🏻
where did ya find that deal
Pretty clear to me which brand I'll be buying next. Thanks for the video!
Where are the purple 3M 36 grit "body man's brush" in this test. It's the best of the best.
FYI Granger is selling the 3M disks.
Thank You I did not know these existed. I have a project that these existing, I’ll definitely be buying the 3M.
I’ve been using made in China nylon ones for over well over 10 yrs and they worked amazingly.
I have a green and a white 3m bristle discs, spent 10 bucks each over 3 years ago, I'm an auto tech, so yes, they get used and are still a long ways from wearing out
Wow really glad I watched this before I ordered those Amazon ones. Great video!
Glad I could help! Thanks for watching.
Thanks, I definitely had the same amazon ones as you and experienced the same level of low quality. This convinced me to only use them on junk parts for fun and use 3m where it matters.. and to lower the speed even more
A long time ago, probably, twenty years ago, one of my painters and I, sat down and did the math on 3M products. Vs everybody else...
Because we had to. Some crooked salesman from Sherwin-Williams were trying to fill our shop with their garbage. And their whole sales pitch, of saving 6% on our materials, was absolute nonsense. We were saving way more than that, on primer alone.
So we did the math. And tested the product. Sandpaper, roloc discs, adhesives. And what we concluded was. 3M, is one of the best partners you can ever have in the automotive repair industry. Their products are way higher quality. And have way more, durability and everybody else.
Especially with the sand paper.
I can't tell you, how many times over the last 25 years, these salesmen have come into the shop, pushing the same garbage, over and over again. And the sales pitch is always the same. Our product is one-third the cost of 3M. Yep. They're absolutely right. But by the time you get done using three times more of their product, then you would a 3M product. The cost is exactly the same.
And yes, I have had, carborundum, and mirka Rolocs, come apart while I was using them. And caused me to repaint, 8 cars. Because that disk, everything in the shop, when it came off the mandrill. I let me tell you, nothing pisses off a technician more, then having to do free paint jobs, on a hood, or a roof. Because that piece of crap exploded.
After that incident, I took all of that garbage, that we had in our shop. And threw it in the trash. Yes, my boss was pissed. Yet, he wasn't the one that had to clean up that mess, for free.
My shop at home, only has 3M products in it. And those products, help me maintain, my Craftsman status as an auto body tech. And because of those products, I maintain a less than 1% come back rate, over the last 30 years. And I have quite literally used their products, on thousands of cars.
And they have yet, to let me down.
In fact, every time I have interviewed for a job. I have gotten the manager out of his seat. So I could look at the products they use. And if they aren't using 3M... I'm not working for them. You ain't turning me into a cobbler, cuz you can't afford sandpaper. And by the way, the biggest indicator, that your shop, is failing. Is when your management decides to start using inferior products. If they're attempting to cut costs, it's because, they are, tapping into their materials cost, to create the illusion of profitability. I've seen that cycle repeat at least a dozen times. And when the rest of the community finds out that, a shop has decided to use the inferior products. We all know... They're only weeks away from closing their doors. Their Titanic is sinking, and they're looking for a life raft.
And by the way, I've also noticed another trend with these body shops. They're trying to do away with the commission employee. And put them on a straight hourly rate. Which is another, very good indicator, they're on their way out.
Good labor ain't cheap. And cheap labor, ain't good. Especially, in the auto body industry. You get exactly what you pay for. And if your business model doesn't include pain, for good technicians, and good products. You might as well just give it up.
what are those red canister that you use to clean the marker on the table 8:06 ? whrre can i get that canister?
Cavitation is the wrong word. This guy needs to look up the definition.
I can't believe that I have never seen these disks before.
This is great. I wonder if they make plastic scrub brushes or even polishing pads to apply wax etc… love the small size for the angle grinder.
So the policy in 3M marketing department is to make it inconvenient and confusing to purchase their product. Did they hire the folks from over at budlight marketing?
One more item to note the Amazon brand was leaving yellow and white residue because the abrasive fingers where more than likely melting because of the friction cause by the abrasive fingers laying down or sprawling out.
This video saved me from purchasing the Amazon version. Thank you so much.
Another excellent review!
I think I would purchase both, purchased a cheaper ones because they’re not expensive, but purchased the 3M ones for when I really need performance.
I would pay more just for the control over the tool. That cavitation and catching the edge would make for some colorful language for sure..thanks
I use those 3M green bristle discs gently. Too fast and those bristles are forced outward. It doesn’t take much to get the job done.
I switched years ago to using a green 3M bristle disc on engine mating surfaces such as a cylinder head or the block since I’ve read about Scotch-Brite Roloc disc particles causing internal engine damage. Actually they called ‘em “surface conditioning disks” but there are plenty of other surfaces I can use Rolocs without causing issues.
On a similar subject, just before the pandemic, I bought a box of each color of Scotch-brite hand pads and can’t help but wonder if counterfeiters managed to perfectly fake those 3M products since the box labeling was perfect but the printing on the individual pads were barely legible, and I noticed a difference in texture. I’m not sure what happened to the easy-tear perforations but they were non-existent. Maybe 3M just made some changes.
So what Dewalt tool will work with the bristle disks I want to clean the inside of my pellet smoker so speed is not a real issue thanks
In my experience with abrasives overall, cheap abrasives of any kind suck to do any real work with. They definitely might work for random stuff in the garage but if you’re doing it for a job it sure sucks changing flap disks a thousand times.
I've done some research. The bristles really don't like edges. But I also haven't found an abrasive that does other than sandblasting. And I don't like sandblasting. It's a circular relationship.
3m designs their product to not remove material or as little as possible if your working on a head gasket surface or intake plenum be extremely careful because flatness it key to sealing that surface and if you remove too much material that surface will never seal properly so 3m is definitely the way to go if your a mechanic or auto technician , so have a good one
Are the Amazon ones rated for that high of a speed? It looks like your over spinning them.
Yeah, it looks like they're meant for a lower speed.
that brake cleaner non aerosol sprayer is pretty cool too.
Man, I'm 6:30 into this video and I have a basic math lesson on how much the discs cost. And we haven't even started with the Chinese discs. Way to waste your viewers' time!
That’s all I needed to see glad i bought 3m
I used the green one and loved it!
Green WHICH one??
@@randallrun 3m
this is perfect for prepping ally joints before tig welding
in turkey we have saying "Tool works and hand hand is brags about it" point is how imporant is quality of tool using.
I know this is about the bristle disc's but how do you like and would you recommend that Milwaukee angle die grinder and do you happen to have the straight also and what are your thoughts on that also. Have been thinking about getting them for awhile but you know $$ is tight and don't wanna throw any away, Thanks for any reply on them from anyone using them
I had good luck with the cheap amazon roloc discs and scotch bright pads for prepping my engine for my jeep's LS swap. I didn't have any of that fanning out or smearing like you are getting, guess different vendors have different quality.
I use them at lower speed, they dont fan out, and do a good job!
Think about the efficiency you're losing with the cheap one, all the repositioning and effort to keep it from flying off to the side, now add it up throughout the day times that by the work week then times that by how many weeks of the year... It truly does add up
You're exactly right. That's why we put this together. Time is money. Thanks for watching.
@@Shoptoolreviews thank you for the video. Maybe one day you can do a video comparing some Walter abrasive products
Actual demo starts ~ 9:45. Cheers
Thanks
I love the 3m ones but when working with thin sheet metal the get cut up and wear lot faster. I only use them when I know this won't happen because they cost so much.
Great comparison video, a follow up with low speeds would be cool to see. Or a short?
Neat bit for removing rust off your tools.
I first bought a ''fake'' one, it was tearing itself apart without even touching the workpiece... even at low RPMs... Then I bought a bunch of 3M's, they are way better! But the 20k or 25k RPM is not advised, it will self-destruct!! The bristles will come flying of!! Other than that, they are great!! It's a great addition to the tools used in the Milwaukee (love the 90degr and straight grinders)
Happily gushing about the 3M while dissing the cheapies. Well, I guess that's expected. Anything which can make the job easier certainly grabs your affection. I saw how quickly the Chiwanese discs were breaking down quite quickly. 3M sure looks like the easy winner there. Now show us some Pferd victograin grinding discs for the angle grinder. They're absolutely astounding, too.
does dewalt have a tool like this? this is look a die grinder in driil . very nice tool
Yay a video i wanted forsure!
So the yellow 80 grit os no different to using sandpaper for the same finsh for painting?
Good info but what you were calling cavitation is simply bouncing. Cavitation is an effect always associated with movement of fluids (think air bubbles in water supply and going through an impeller of a pump. This could cause cavitation.)
Thank you so much for this video متشکرم از شما
eBay is the place people sell overstock bulk of 3m and China that will not be used but have defects open packs etc.
I personally mostly use 3M products, and you do get what you pay for, at least with them? I also like Osborne wire wheel products? I still will use USA manufacturers for abrasives and the like? Tried HF sandpaper, and they can't even do that well, in my opinion? Good job, keep endorsing USA anything, as far as I'm concerned?
Was kinda surprised when I got some standard Hercules 80 grit wet, it didn't crumble.
It's not labeled for wet sanding, but after that I was using it that way.
Because sanding fiberglass dry really sucks.
It wasn't nearly as good as 3m though.
HF sandpaper is like pre dirtied shop rags. Want a shop rag with sand in it? Well have we got a deal for you!
There's no replacement for original 3M products. One often resorts to other makes not for price per se, but as you mentioned, some products are a pain in the butt to get. Being an "octopus" company that has sooo many great products hurts distribution and off the shelf availability for sure, they have so many good, excellent and irreplaceable products that even large distributors can't sink in a whackload of cash into stocking everything. IMHO the only company that's near to "par on par" with 3M when it comes to abrasives it's Norton.
do you ever have issues with your Milwaukee cutting out after a few seconds of using it. mine always does and its so annoying
Nice job, thanks for sharing.
it can be use on wood?? or this is only for metal.?
Why are we even considering anything from China? Why????
The Amazon special is cutting more aggressive because if you notice the filaments fingers are laying down and there is more ceramic abrasive making contact with surface, but the reason its laying down is because the material is not as stiff or long lasting this is also causing it to grab. I'll bet it doesn't last anyways near as long as the 3M disc, I would be afraid that the fingers on the Amazon brand might even fly off, after a short time the Amazon brand looks like your using a mop. Go with the 3M if your more serious about getting a good job and longevity with your abrasive than with the price.
Great video . Good points
I've been using 3m over the years. 👍
Do you need a high RPM tool to make this work? Or will a Dewalt drill on 3 do it?
this look a die grinder in a drill
Thank you so much for the die grinder collet holder wrench hack. First thing tomorrow I’m putting one in the vise and bending her over. That will solve many headaches haha
@ Tyler fraker
Haha that's usually what starts many of my headaches.
Generally avoid Amazon branded anything, noname word salad chinese products, and enjoy your superior tools.
genuine vs fake, you get your moneys worth either way.
Whats that spay-can at 08:05 ?
Pressurized spray can full of brake cleaner.
@@Shoptoolreviews thank you for your response, wasn't finding something similar here in Europe
Feels a bit biased, when you cleaned the painted surface you handled the machine differently on both discs. The cheap one you were a lot more sporadic and aggressive, which caused it to go all over the shop, however the 3m you kept a lot more confined to the centre areas and seemed to hold it in a more controlled fashion.
That’s before we account for the almost 50% price difference.
They need to be ran slower, so keep the control. I kinda feel like the 3m ones have a higher rpm range, whereas the cheaper ones need to be ran at about half the speed.
So you're saying that using 3M improves technique? Interesting.
for stripping wood is good?
Brother of Scotty Kilmer? Why you screaming! Hell, we're here! 🎉
is it neccessary to shout
You caught the edge of steel much more with the non 3m. It’s hard to tell if you were doing this or the the non 3m disk was doing it. To me … it look like it was more you. You did not seem to work the edge with the 3m as you did the non 3m.
I made this same mistake on Amazon. Bought the cheap version of the white bristle discs and they were basically plastic bristles with no ceramic. The just melted and flew everywhere 😂 absolutely junk
These have always been best for removing decals , and personally don't ask for them ever .
Here in Europe they horrendously expensive the discs are 50€ each and the holders 70€.
Surprising to me that the Amazon special seemed to actually clean faster. That said, it clearly won't last as long. 3M generally makes good stuff, but the price premium is usually too much for me.
Fooling around with inferior abrasives is too much for me. So I pay the premium for 3M products gladly. Gets me done faster. I'd rather be looking at two days of sanding than a week of it. I change abrasives like they're going out of style too. Up this one's getting dull, switch! Wearing tools out adds up too.
@@1pcfred When the funds are readily available, it's the obvious choice.
Chatter, not cavitation. Great review
Very helpful
So how much does 3M pay you for commercial like this one??
I've been using the 3M discs for years, and would never use the cheaper ones, you get what you pay for!!
According to some in the comments there's different cheap ones and some's better than others are.
You can literally adjust the speed on pneumatic rotary tool
When i see "almost as good " as 3m, ill watch.
Havent seen it come true yet,though.
We'll let you know when we find them.