The Incredible Technology Behind Sandpaper
ฝัง
- เผยแพร่เมื่อ 20 พ.ค. 2024
- ▶ Visit brilliant.org/NewMind to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription
Sandpaper belongs to a class of abrasive products known as coated abrasives. These products are composed of an abrasive element bonded to a backing material such as paper, fabrics, rubber, metals or resins and they generally possess some degree of flexibility. King Solomon is mentioned to have used a mysterious worm or an abrasive substance called the Shamir that had the power to cut through or disintegrate stone, iron and diamond. In the 13th century, Chinese craftsmen were known to bond sand, crushed shells and sharp seeds onto parchment with natural gum. Other notable natural substances that have been used as abrasive tools include Shark skin, Coelacanth scales, and boiled and dried rough horsetail plan.
INDUSTRIAL ERA
After mastering the process, Oakley would go on to found John Oakey & Sons Limited in 1833 with the goal of mechanizing the process and within a decade Oakley had not only developed new adhesive techniques and manufacturing techniques that enabled the mass production of sandpaper but also created the first glass based coated abrasives. These products used small grains of ground-up glass or garnet called frit that are far more durable than sand, and also retain a sharp-edged structure as it wears down, producing a longer lasting abrasive cutting action. An initial attempt of producing their own grinding wheels was met with little success so the company, now branded as 3M soon transitioned into the coated abrasives industry. 3M’s initial venture into the market using natural abrasives was still plagued with quality issues and its reputation began to suffer.
Three-M-ite was a cloth backed coated abrasive that relied on a new class of synthetic abrasives. These abrasives were a direct result of the advent of electric furnace technology that allowed a combination of base materials to be fused by heating them to temperatures above 2000°C or 3600°F, forming new crystal structures with favorable abrasive properties .
NEW TYPES OF SANDPAPER
In 1921, the company introduced the world’s first water-resistant coated abrasive called Wetordry. When bonded to a waterproof paper backing and used with water, silicon carbide sandpaper dramatically enhanced many of the key properties that define the effectiveness of a coated abrasive.
HOW SANDPAPER WORKS
The effectiveness of this action is highly dependent on the shape of the abrasive grain, with sharper edges producing more localized pressure at the interface points of both materials. The durability of a sandpaper is primarily determined by the relative hardness between the abrasive and the work material, the adhesion properties and size of the abrasive grain or grit size, and its ability to resist loading, where ejected material is trapped between the grains.
A NEW AGE OF SYNTHETIC ABRASIVES
Alumina-Zirconia is an incredibly tough and hard abrasive that offers nearly twice the performance of aluminum oxide in both efficiency and durability. It was also relatively easy to mass manufacture and quickly became a popular choice for metal working abrasive products.
SOL-GEL CERAMICS
In the early 1980’s, a revolutionary process that would dramatically improve abrasive performance would be introduced by 3M with the industry's first steps into nanotechnology. This new class of ceramic nanoparticle abrasives are produced using a method called the sol-gel process. This new abrasive became the foundation of their new Cubitron product line, and it would soon gain wide acceptance in the metalworking industry both in coated product form and as bonded grinding tooling.
MICROREPLICATION
In both synthetic and natural grain abrasives, the inconsistent particle shape of crushed grain creates inconsistent grinding and plowing action on the workpiece. These first trials in shape manipulation initially produced a coarsely shaped repeating pyramid mineral that was initially introduced in 1992 as a low grit metalworking aluminum oxide based product called 3M Trizact. By the turn of the century, 3M would introduce a new class of product line based on precision grain shape or PSG technology.
In this process a casting film is used to roll a microstructure onto a wet uncured abrasive gel coating. As this occurs a combination of UV light and heat is applied under the roller’s pressure, curing the abrasive in its designed structure. Microreplication would first be used to further refine the Trizact product line. Cubitron II utilized a unique standing ceramic aluminum oxide triangle microstructure that not only had an extremely sharp tip that would cut through the work material instead of plowing through it , but by design, would fracture to produce a new sharp edge as it wore, effectively becoming a self sharpening grain.
--
SUPPORT NEW MIND ON PATREON
/ newmind
![[LIVE] : ONE ลุมพินี 63 | คู่เอก "ยอดภูผา vs โซเนอร์"](http://i.ytimg.com/vi/RGVmBsegKEI/mqdefault.jpg)
▶ Visit brilliant.org/NewMind to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription
Seems a bit too much of an advertisement for 3m…….as a member of the audience, this is distasteful
fascinating stuff … also, simply the most insignificant point, Norton is in Worcester, MA and is pronounced something closer to Wuss•stir … because English [shrug] th-cam.com/video/czw5sP2E7s8/w-d-xo.html
pleaseeee make part 2 of the quantum computer video PLEASEEEEE
You missed out the BRILLIANT technique that uses static electricity so that the particles are glued to the backing with their pointiest-point sticking straight up.
Like the artificial grass in model building? :D
@@johnuferbach9166 if they align it using static electricity, yeah, sure
3m is one of the most impressive companies. It's crazy the developments that come out of there
3m labs is up there with Bell labs and JPL
Unfortunately their stock is not doing well due to issues & lawsuits with PFAS
@@Offroadcircus pfas is nasty stuff
@@OffroadcircusI sware I'm getting a bit of that crap, live right next to an airport that is also military
And the amount of chemicals they dump lol
As a woodworker, I can confirm the improvement of 3M’s cubitron net abrasives. The stuff is worth the premium price every day of the week.
3M makes some of the best stuff ever.
Their entire family of abrasive products are incredible, when I was in the industry, 3M was the only type of automotive polishing and buffing compounds I would use.
No one deserves to pay premium. It should be mass produced so it can be bought by the common man.
The Cubitron stuff is an absolute game changer. Besides never being clogged it's always sharp as a tack and consistent. And it seems to last forever! Definitely worth the price premium. It pays for itself in durability.
If anyone is curious, see Jonathan Katz-Moses's sandpaper test videos. The Cubitron just excels.
I haul for 3M, definitely neat seeing how often it shows up everywhere, never noticed how common it was before.
Seriously, the nets are black magic and wizardry.
I'm a manufacturing engineer in a bearing grinding plant. I oversaw the transition from simple aluminum oxide grind wheels to wheels that contained 30% cubitron 2. We were able to reduce the frequency we dressed our wheels while speeding up feed rates which drastically reduced cycle times.
We were originally planning to use up our old inventory before phasing in the new wheels. However, I did the math and it was actually cheaper to throw away thousands of grind wheels to transition more quickly.
Can I have them?
Can Max have them?
@@maxscott3349 my mum says you can have them if your mum agrees
@@maxscott3349 i am the grinding wheel, you can have me
Chris, give Max the wheels already. And we don't want to hear the "I already threw them out" BS!
Wait, did I just watch an 18 minute ad for 3M? 🤔🤔🤔
Spot on mate!
You never fail to provide a seemingly boring topic and make a highly interesting video about it that leaves you marveling at what modern humans are capable of.
It's not a boring topic tho, it has it's audience, niche audience of engineers and engineering students that actually enjoy such topic regardless of the presentation, not saying clear mind did a bad presentation, it's very good, I'm saying the topic is actually interesting.
sweaty worship with the most generic of platitudes
@@evilgibson otherwise known by most as a compliment
@@electroflame6188 ew gross
Technology Behind Sandpaper: Hell No!
New Mind: Oh. Hell Yes!
What I love being reminded of is just how precise everything in our world is. If all of our technology was sent back 1000 years, even knowing all this stuff it would take so long to get back to this point because if just how incredibly advanced we are, even if it doesn't seem like it.
That is SUCH a great point. Such an insight. If I understand you correctly (and rather arrogantly I believe I do :) modern production systems are just SO far from homesteader or simple artisan methods that technical knowledge alone is not enough to make a "black start" (peppers take note"). I guess you could time travel back to ancient Persia and start a cement factory but you couldn't go back a hundred years and start making computer chips, RNA vaccines or several other things we take for granted today. It seems that we have passed some boundary prior to which just having Know How would permit an advance. To put it another way, we might as individuals have become totally divorced from the technical underpinning of our own society. That's an Epochal sort of thing. So a big Thanks to you Tabitha L. 👍🏼 🏴🇨🇮
That is a great point, that was also brilliantly illustrated in the Hitchhiker's guide to the galaxy's last book
Arthur Dent finds himself grounded in a pre-industrial planet, for the first time in the series he was the being from an advanced society while everyone around him was "primitive"
Even though the only advancement he was capable of bringing to these people's lives were sandwiche making
He couldn't introduce them not even to the toaster, as that requires electricity which he also had no idea of how to make
So there was Dent, a fine human from the twentieth century, and the most advanced technology he could come out with on his own was a slab of meat between two slices of bread
Precision is what made factories possible otherwise each piece was hand made to fit
+1. we know what it takes to create a microchip. Good luck going back 1000 years and creating a simple 8bit computer..
I suspect that if you tried to replicate our current technology with the smallest group of people possible, you would find that it takes about 8 billion people to do it. In other words it takes all of us working together to produce this amazing technology.
It's pretty amazing how you consistently take some aspect of technology that most people wouldn't give a second thought to, and turn them into genuinely fascinating and informative stories. A+
Most people don't give a second thought about anything, so it is kind of weird what you are saying. Technology, and these aspects of it, are naturally interesting stuff; he isn't "turning them" into anything. If the topic wasn't interesting, and he had to 'turn it' into an interesting story, that would be called lying and propaganda
@@pyropulseIXXI My point was more along the lines of "gee, I never would have thought that a doco about sandpaper would be so interesting and full of unexpected science and engineering! That's cool! Thanks for teaching me something new!"
Is sandpaper manufacturing really something most people wouldn't give a second thought to? I find that hard to believe. That doesn't mean I don't understand the idea that most people wouldn't, it's just that I'm always thinking about how things are made. Youjust can't use something and not consider how it was made... The only alternative would be assuming that it appeared out of thin air 🤷♂️ I guess I'm just weird?
@@awesomeferret I feel like it is. Sandpaper is just a thing that seems intuitive on the surface like “oh yeah it’s just a rough paper right” but if you try to dig into it at all it become a lot more interesting.
@@darkithnamgedrf9495 I'm surprised that you thought I would disagree with that.
sandpaper, one of the most underrated tools in existence
One of the most underrated for sure but I’d argue it’s the lathe; in terms of importance in technological evolution it’s no contest.
Sandpaper has had a rough time being recognised for its ability to smooth and level.
It has tough grit.
@@world_still_spinscool
3M is such a disruptive and successful company that you could make an extremely interesting video on them as a whole. They make so many things, and they’re all amazing quality
Really incredible to me that they started out mining natural abrasives, the spot they chose to mine had the wrong mineral, so they transitioned and now here they are as pretty much the international leader in commercial materials science...
PFAS
@@dixen9116Wow, congrats on the typical smooth 🧠 NPC response 👏🎊
You can't really blame a company for using something that was deemed "safe" at the time by regulatory agencies 🤷
They spend a ton on research.
As someone who uses these products, this video really helped me understand what I’m using. Thank you!
Seeing the changes in simple materials that we have been using for years is awe inspiring. Your videos are well done and very appreciated.
Man, I love materials engineering.
Great video, made me want to buy sandpaper lol
Buying sandpaper made me want to make this video 😂
We used trizact to grind a notoriously difficult material at work (as in, took a lot of time to remove material), and to put it in technical terms, it absolutely slaps
Jesus Christ if I had the same issues that 3M had on the shores of lake superior, I wouldn’t have doubled down and borrowed to establish a sand paper lab, I would have probably quit and asked for my old job back. These guys have guts.
Was a little easier back in the day to not get fucked if you failed at first try. Now you can hardly get into an industry.
@@ObservationofLimits
A large part of that is how tightly the poors like us are squeezed nowadays.
Bosses have kept us hungry like dogs to enforce obedienc, too weak and starved to make it in our own and become competition.
Owners who do nothing but own are tumors...
@@ObservationofLimits Wait... What?
@@FirstLast-vr7es wtf why did this comment end up here
@@FirstLast-vr7es lol those comments were part of a discussion on an entirely different video last night. YT app be trippin
3M is truly an amazing company. At first sight you'd think they have a Monopoly over everything they make, but it's just the fact they research and engineer so many things themselves.
As an auto body and paint technician qubitron has far surpassed any sandpaper I've ever used. And now I know why. Thank you for the knowledge. I'd love to know more technical information about automotive clear coats.
Hello fellow paint tech
Watch... It'll be the next asbestos. Seems we can never have anything nice.
Definitely on clear coats. I'm an adult apprentice paint tech and had issues the other week with clear coat. That my tradesman hasn't seen before. And neither has my college lecturer or the sales rep. I'd love to know the ins and outs it's so sadly fascinating.
From what I got from this video is that 3M has singlehandedly innovated sandpaper more than any other company.
They have so many amazing products
They also accidentally made a forcefield from static electricity. If I remember right there were a few people who claimed that it could hold a stapler in mid air
3M is one of those huge corporations that has changed our lives in mostly good ways and thus we don't know about them. Companies like Google, that change our lives in both good and bad ways are much better remembered. Yes, I plan to make a video on this and yes I will notice if you "copy" me lol.
@@awesomeferret Lmao
And the companies like Saint gobain and Wesco pro, reep all the benefits without all the r&d
I've been using abrasives for at least sixty years. I've always wondered about the history and how they were made. You know, something everyone takes for granted, but I knew there was a lot behind the apparent simplicity. Thank you!
I'm glad I refreshed my feed!
As a craftsman, i can assure you 3M CUBITRON II products are the most efficient and long lasting abrasives i've ever witnessed. They just chew trough steel effortless, and last very long. They are the most expensive of the market tho
That Cubitron II is some really good stuff. I've used it on wood and metal and plastic. It stays sharp and doesn't clog as bad as the cheap stuff. I used to think that the "boutique" sandpapers were a gimmick until I broke down and bought some. Now it's all I buy. It's worth it just to not have to constantly change out sheets on the sanding block.
Thanks for researching this topic. The perspective on the simple things no longer being simple is so fascinating
I'm a amateur blade smith and have used many of the mentioned abrasives. Very informative video!
this is the best and longest 3m ad I have ever seen
As a retired 3Mer that actually worked in one of 3M 's abrasives manufacturing facilities this video is actually telling a story of 3M's innovation across the company's some 40 core technology's and how 3M continually brings those technology's to a diverse set of products. This really only addressed the abrasive. Btw I doubt this was sponsored by 3M.
Doubtful, but came off pretty heavily as 3m being the only company doing anything in abrasives research. Maybe everyone else really has been slacking but there’s gotta be other companies that have innovated. The part about net abrasives really threw me off, a technology 3m **didnt** make, and just waited for a parent to expire being heralded as some kind of innovation from 3m.
@@chaschuky999 Well you need to ask the author of the video. Abrasive products started the 3M company back in 1902 and has made notable innovations in the products they produce since.
This is the beauty of the internet: you can somehow manage to find a high quality video about the seemingly most mundane topic.
who knew sandpaper and abrasives could be so technical....just think about the guy who goes into work and says, today we have to make a better abrasive than yesterday....pretty evolving technology
Thank an engineer! It's what we do everyday! ✌🏼
I had no idea the structured sand paper im using is so new. Very interesting. Thanks for sharing 👍
A traditional way that Paulownia wood is finished by Japanese woodworkers is by using a leaf as a fine abrasive that also releases natural finishing oils
I searched everywhere to look into that and couldn't find anything about that. You got any links on the subject?
Until a week ago I'd only used normal grinding disks on metal but then I used one of those Cubitron 2 disks. I was genuinely amazed at hot it chewed through the steel like it were wood
5:02 Someone has probably mentioned this, but it's pronounced "Woostah"
Other than that, this is a deeply fascinating and engaging vid on a subject I've occasionally wondered about!
I was tempted to make the same comment.
It's been great learning about sandpaper and abrasives, thanks a lot for doing all the research and making this fascinating video.
I work in an industrial supply company in Minnesota that works along 3M to sell their products to other businesses. I never understood the difference in these products that I sell until this video :)! Thanks
Love your detailed explanations, simple yet accurate, which is difficult to do. Takes time to do great synthesis
sweaty
This is exactly what I needed to help me procrastinate the sanding stage of my woodworking project.
what an amazing video... made me motivated to study 13,14 block chem and solid latices
This is what I love about 3M: they are a company based on the scientific/engineering advancement of the human race.
human species
From personal experience, trizact is a game changer. Working in autobody, had it demonstrated maybe 15 years ago. The 3000 grit is amazing
This was neat! In my hobbies where I use them I've always had a fascination with abrasives and adhesives since the science behind how both work is just so cool since I can actively see how the science behind them effects what I make. I would LOVE to see a video on the history of cyanoacrylate and similar adhesives from the early super glues to the now ultra complex glues that companies like Henkel make. There are so many adhesives that just Henkel makes (superglue, semiconductor glue, conductive adhesives, optically clear adhesives).
This is a topic that I have wondered about in the back of my mind ever since I found out about the higher grits of sandpaper! The delivery was exceptional, you have earned my subscription!
I am fascinated how in depth and interesting that was. Great work!
For polishing it's quite common to see grits finer than 5k, up 10k is commonly used in jewelry and optics.
Problem is in different industries and even manufacturers there are different grit scales. So like a FEPA P1200 is the same size as an ANSI Coated 600 which is around a 3000 Micro Mesh. All are 10 Microns.
the finest measure you see is 0.25 Micron.
myplace.frontier.com/~mr.wizard/GLGC/GLGC.png
Niklas - So?
Jewelry can use up to 60k grit, or .3 micron. As a watchmaker I've used 1 micron (about 20k grit) to black polish stainless steel.
@@CaptainXanax No you haven't.
@@jonhohensee3258 You're right, I was just making that up to sound cool.
I've literally been curious about how sandpaper works and is made for several days now and here you are with a new video. Thanks!
Man I love EVERYTHING you do! I love learning about the development history of stuff and you videos always capture my attention from beginning to end. 11/10 ❤
sweaty parasocial creepiness
@@evilgibson um… thanks? 🤪
I find it funny when people pronounce Worcester like how a normal person would, then there are people from Massachusetts lol. Great video btw.
also funny that instead of choosing between worsester and workester, worchester seems so common
Don't forget other greats like Quinzee and Bahsten.
I had to google what you meant. I’m definitely “normal people” lol
@@GeofDumas Nobody ever comes up with Woostah. 🤷♂️
It's a fun game! We should all play.
@@jimurrata6785 don't forget Peabody
This was both entertaining and informative. I never knew there was such a large world around sandpaper
A guy I used to work with, his girlfriend worked for a company that designed the glue to hold 2 ply toilet paper together. Crazy how little things have a huge industry behind them
Basicly everything is a science today and it gets only more advanced every day... we are standing on the shoulders of giants as they say :D
I usually use products of Sia Abrasives (Swiss Industrial Abresives), and their products are amazing and pretty high tech. They are only Swiss manufacturer of bonded abrasives, with over 140 years of history (since 1875). I live in Switzerland, so it is easy to get all of kinds of their products even for non-professionals. 3M in some specialized applications like metal grinding might be sometimes better, but I mostly work with wood. The Sia abresives really last very long, with great material removal, compared to some other products I used before. While Sia only started expanding into global markets aggressively in early 90s, in 2000s went into foam and non-woven abrasives (some in Switzerland, some in UK), it is quite familiar now in many industries. Since 2005 it is a part of Bosch GmbH power tools division, but is still separate from Bosch abrasive products which are still inferior in most areas.
Also logo of Sia is just cool.
This channel's variety of subjects within technological history is really spectacular.
Absolutely the thing I didn't know I needed; outstanding video
I love your videos man. Super interesting and informative. Keep up the great work.
One day, mankind in it's hubris, will create an abrasive pad so powerful it will polish humanity from the planet!
Okay Michael, step AWAY from the bottle.
"It’s" doesn’t mean what you think it means. Your first sentence makes no sense. "…mankind in it is hubris…"
I've used Cubitron abrasive products and they're great stuff, but jeez, this video feels like it came straight out of 3M's marketing department.
And if you made a video about the advances made towards putting men on the moon it would sound like a NASA commercial 🤷
This is a nice introduction to an under-appreciated technology. It is inspiring to learn that 3M rose from a near-failure to a cutting-edge industrial giant.
literally such good videos that I just watched 16 minutes of information about literal sandpaper
LITERAL sandpaper???
This is AMAZING! Thanks for the insights to these awesome material technologies; we've come so far!
I'm currently working on setting up a wood products manufacturing company and I'm planning on getting the Mirka line of sanders and mesh. It's awesome to have a detailed explanation of how the different technologies actually work. Usually the marketing is vague and you just have to try everything to see how it works different. Apparently the sanding mesh is highly regarded and is generally the standard for high volume sanding. Keeps the work area cleaner too.
Doing it by hand or large surfaces?
We use big ironwood belted drum sanders (it's a belt but you can set it up to sand either off a grooved drum, a pad over the flex area, or a surfaced drum). Basically it runs a huge vacuum right off the belt to clear it. They work amazing for fast material removal, flattening, and finishing.
The only thing I wish is that they used a vacuum table. Sometimes you can get nip due to the pressure rollers.
@@ObservationofLimits hand sanding rifle stocks. Lots of small areas to hit. I
I didn't think I'd watch a whole video on sandpaper... but here I am, thanking you for doing the vid!
Very enjoyable. I love learning about industrial development.
It's fascinating to learn so much about such seemingly simple technology that I depend on everyday. Thank you 💚
Never really wondered, but now I know quite a bit. What a fantastically thorough, interesting, visually appealing show. Never realized how crazy technical this could be. But, nothing can take the place of a good ole' mate, One Grit.
This is also a fantastic proof that we are still innovating. Even the seemingly most mundane creations/technologies are continually being tested, tried, innovated, and improved. Humanity is still creating. Taking the hard path, venturing into the unknown.
Key to understanding coated abrasives is to understand the pressure applied on the component ie pressure = force/area (from someone who sold CA for over 35 years in UK.)
As someone who uses 3M everyday. Their Trizact tech has dramatically increased my finish quality. And reduces my sanding time.
Now I have a rough idea of how sandpaper works. Thanks!
You have a talent! You somehow make boring everyday topics hyper interesting. Thanks for making these videos :)
I got some 600 grit Blue from 3M. I had never purchased sandpaper that wasn't wet/dry and this stuff was a huge mistake. It formed a gooey glue and basically reversed my sanding and added a lot of work. I haven't used any again, but if I do try, it will be dry
Needing to level a subfloor for new flooring a concrete product was used. Unable to apply it uniform enough, first a flat point shovel was used while the product was "green". Fine tuning to about 1/16 inch per yard was still needed so I decided to sacrifice some life of a belt sander to do it. To my amazement the 32 grit 3M belt handled it well and without apparent damage or wear.
As a frequent mechanic and wood worker who has used many products including cheapo sand papers that hardly work at all, "wet or dry, emery cloth" etc for many years I found this video very interesting and enlightening. I'm not sure what abrasive tech it was that I just used on the concrete or with the palm sanders I use often but this reinforces my conclusion that it's often well worth it to pay a bit more for the best.
Very informative. Thank you for the lecture.
This is truly useful knowledge to me. Thank you
Once again a masterpiece of a video! ❤
I really love your videos, you're a blessing to this site.
Always love your videos.
Excellent presentation. Thank you
Another thing I just take for granted! Thanks for the video. Thumbs up.
Your content quality is absolutely top notch
Nice amount of information I did not know, but what I was hoping to find out and it was not talked about was what do they use in terms of paper and glues to get the sand or cutting material to not come off the paper, and paper designs..
Who would have thought sand paper could be so interesting. When I saw the title I almost didn't watch. I'm glad I did. Great program.
I love your videos especially the ones that have something to do with machining
Having bought the cubitron nets and being amazed just a few weeks ago, this was a cool video to supplement that amazement, thank you!
This was fascinating. Thanks!
This is excellent man. I really like your videos.
Again - highest level of quality content right here
Cool video!
Wet sandpaper is how I finish the bottoms of all the minis we sell. It works incredibly well.
my first time here,, u r amazing guys! nice work,, keep it up
Great mini documentary, but it only looked the abrasive material. Is there gona be another about the adhesive, and the backing material of abrasives?
Glue, cloth and paper were mentioned in a sentence or two 😆 That being said, I’m kind of limited in time and resources in how detailed I can take these videos.
@@NewMind That's completely understandable; adhesives alone would require a series of documentaries just to scratch the surface!
Understandable, that’s why I was wondering if there’s gona be another looking at the other aspects. Maybe not so much the backing, but the glues probably have a fascinating story.
Thank you so much
These are the kind of videos I like best…practical
best advert i have ever seen... good one
This is one of those industries that has a huge impact on manufacturing, but hardly anyone thinks about. I was involved with hot melt adhesive equipment and experienced the same thing.
You are a very good teacher...very competent content...
Thanks again
The only abrasives the company I weld for buys is cubitron. One day I brought in a bunch of other sanding disks from home to try on my angle grinder and compare to the cubitron. The performance and the beginning of the pads wasn't too different, but the cubitron disks lasted way longer overall and stayed sharp and effective much longer.
Fantastic video, thank you.
I like their line of abrasive sticker sheets. Especially the sub - micron ones.
Mirror finish without scratches should finally be possible
As a finisher of all things wood and metal this was great.
Very nice video! Thanks!
I recently started using Cubitron II sandpaper in my home woodworking and metal shops, and have been curious about how they make the shaped grains - so this video was very timely for me! Very well done presentation, too!
Absolutely fascinating, interesting, and informative video! Well done! Thanks!