▼EXPAND THIS SECTION FOR MORE RESOURCES RELATED TO THIS VIDEO▼ --Link to document outlining the UK restrictions: www.gov.uk/government/news/uk-safety-alert-issued-for-angle-grinder-chainsaw-disc-attachment -More videos on our website: stumpynubs.com/ -Subscribe to our e-Magazine: stumpynubs.com/browse-and-subscribe/ -Check out our project plans: stumpynubs.com/product-category/plans/ -Instagram: instagram.com/stumpynubs/ -Twitter: twitter.com/StumpyNubs -Facebook: facebook.com/Stumpy-Nubs-Woodworking-Journal-305639859477973/ ★THIS VIDEO WAS MADE POSSIBLE BY★ Sjobergs Workbenches: affinitytool.com/brands/sjobergs *Please help support us by using the link above for a quick look around!* (If you use one of these affiliate links, we may receive a small commission) ★SOME OF MY FAVORITE CHEAP TOOLS★ -123 Blocks: lddy.no/vpij -Mechanical Pencils: amzn.to/2PA7bwK -Lumber pencil: amzn.to/2QtwZjv -Pocket Measuring Tape: amzn.to/2kNTlI9 -Irwin Drill Bit Gauge: amzn.to/2AwTkQg -Nut/Bolt/Screw Gauge: amzn.to/2CuvxSK -Self-Centering Punch: amzn.to/2QvbcrC -Self-Centering Bits: amzn.to/2xs71UW -Angle Cube: lddy.no/10nam -Steel Ruler: lddy.no/10mv7 -Utility knife: amzn.to/3nfhIiv -Center-Finding Ruler: lddy.no/10nak -Bit & Blade Cleaner: amzn.to/2TfvEOI -Digital depth gauge: amzn.to/3mwRf2x -Wood Glue: amzn.to/3mqek6M -Spade Bits: amzn.to/3j8XPtD ★SOME OF MY FAVORITE HAND TOOLS★ -Digital Caliper: amzn.to/384H1Or -Marking Gauge: lddy.no/10muz -Marking knife: lddy.no/10mv0 -Narex Chisels: lddy.no/sqm3 -Stanley Sweetheart Chisels: amzn.to/3y5HDOc -Mini Pull Saw: amzn.to/2UEHBz6 -Gent Saw: lddy.no/ss2x -Coping saw: amzn.to/2W7ZiUS -Shinwa Rulers: lddy.no/zl13 ★SOME OF MY FAVORITE POWER TOOLS★ -Miter Saw: amzn.to/3gqIlQ8 -Jointer: amzn.to/3yc3gfZ -Planer: amzn.to/3mn6BGF -Router: amzn.to/3grD22S -Sander: amzn.to/3DdvD0Y -Cordless drill: amzn.to/3D9ZiIm -Brad nailer: amzn.to/3gsRkjH -Mini Compressor: amzn.to/3mvrmQr -Bladerunner: amzn.to/2Wl0TtJ -Jig Saw: amzn.to/3zetTBY -Scroll Saw: amzn.to/3gq9qDc -Multi-Tool: amzn.to/3muZuMi ★SOME OF MY FAVORITE OTHER TOOLS★ -Drill Bits: amzn.to/3B8Ckzh -Forstner Bits: amzn.to/3kk3wEI -Shop Vacuum: amzn.to/2Wkqnbl -Machine Setup Blocks: amzn.to/3gq7kDh -Counter-Sink Bit: amzn.to/37ZukUo -Featherboard: amzn.to/3DeqHsq -ISOtunes Hearing Protection (Save $10): bit.ly/3BHYdH7 (If you use one of the affiliate links above, we may receive a small commission)

I was a 14 year old attempting a massive woodcarving project. at that time, there were not very many power tools for the job. So, when I have seen this chainsaw disk in my local shop, I was super excited to get it. The guy did not sell it to me. And I had to finish the project with a tiny chisel. Thank you wise man, I am now a grown man still with full set of testicles!

"Imagine a chainsaw that is nothing but tip." The perfect description of these kickback devils.

Even when an angle grinder is unplugged, I can't help but feel instant anxiety seeing people rest their hands on the disc or blade lol

When I started woodworking, I was sure the table saw was by far my most dangerous tool and I was super cautious, took a safety class that covered table saws, band saws, circular saws, jointers, and planers. And then I had a cutting disc fly off my tiny little Dremel tool, whizz by my head and embed in the wall because I failed to attach it correctly. I put the Dremel down and went in the house and Googled safety on every single power tool I had, no matter how small. Scared the crap out of me. So thanks for this.

I've used chainsaws for over 50 years, even professionally in my youthful logging days. The first time I saw one of those chainsaw angle grinder discs, I muttered, "WTF" and felt queasy just looking at it. Years later I watched your videos about your misadventures with the damn thing. Queasy all over again. Thanks for this reasonable and persuasive warning.

The kickback of a wire wheel catching an edge is terrifying enough, the idea of chainsaw teeth on an angle grinder is terrifying.

As a retired timber cutter, the first time I saw that tool I expected multiple serious injuries. Anyone with a knowledge of chainsaws would openly see the disastrous potential with that hamburger shredder. I'm glad you're speaking on this issue.

I've been a welder for 7 years and I use a 4 inch grinder daily. That disc looks so cool but I would definitely never recommend someone ever using this without mastery of both the flapper disc and the cutoff wheel. Out of all the big blades, saws and high current equipment I use, the small 4 inch grinder is one of the scariest I use because it can mess you up if you get complacent with it.

Yeah, had more stitches (internal and external) than I thought possible and lost a 7 inch chunk of my thigh to that POS. Guard and handle made no difference when it caught, nearly broke my wrist as it easily powered it's way past to my leg. Never felt kickback like that. Used multiple times without incident but it only took once. Still no idea what caused it in my situation. Just no problem, no problem, no problem, bam - ambulance and extreme blood loss. I'm not a weekend warrior, contracting was my life. There's no amount of time saved worth the risk that thing poses.

I believe you offer the most safety instructions of anyone I have seen on KZfaq. Thanks for being a responsible and conscientious teacher.

Man, I've had normal grinder discs fail and explode, I can't even imagine having a damn chainsaw disc fail catastrophically at 13,000 RPM. It's sketchy enough when it happens on a chainsaw and the chain wrap itself around a tree or shreds some chaps, that little death machine just seems straight dangerous. Cool concept though.

I was a log carpenter for many years. We called that handy little device the "Wheel of Death". Nobody got hurt with one, but we were used to doing copes with chain saws while standing on icy logs.

A crucial difference between metal and wood is that wood can split and catch your tool. Add a tool that is designed to take large chips, and you have a recipe for desaster. I have years of experience with angle grinders and I wouldn't touch this. My spine tingles just from the thought of using it. When you use an aggressive tool, think of this: you are the softest object in the shop!

I lost a finger just watching this.

Finally someone who recognizes that "personal responsibility" isn't just a magic spell to rationalize away the responsibility of everyone else.

This gave me chills. I am a retired Plastic surgeon and over the years have had to deal with many DIY disasters. I now do a lot of woodworking and have used this type of disc for carving wood. I always use industrial gloves and grip and dip when carving. What struck me about this video was the analogy of tripping whilst walking. I do that too! I have been lucky and that is what gives me the chills. Just thinking of what could have happened. This is an excellent video. Now I have to look up what you mean by quadrants. Never heard of that before. Again, thank you for an excellent video.

Your comment that a person does not know what they do not know is so true. Thanks for telling us what you know. I hope you do achieve a full recovery.

As a long term professional metal worker (30+ years) that has used all manner of power tools and angle grinders of all sizes from 3.5" to 9" hundreds if not thousands of times and as a competent DIY woodworker of some 15+ years using hand and power tools, including chainsaws and table saws, I can honestly say that this tool is one to avoid, and I thought exactly that the first time I saw one. I'm no "super safety" nay sayer freak, but there's just no way I'd ever buy or use one. The kickback produced by a sanding disk can be a eye widening and ring tightening experience at the best of times, even for the highly practiced, but those are paper backed which tear and give somewhat, making it not such a major issue if you're using the grinder in the correct manner. With a hard, rigid metal disk such as that, spinning at 11500rpm and with the uneven and sharpened nature to the edge of it, there is no way you will hold onto it when it bites and it WILL bite some day, most likely when you're least expecting it. I was horrified that such a tool could be passed through even the most slack of safety regulations and be allowed onto the market in the first place. If you have ever bought or been given one of these meat shredders, I suggest you do yourself and the rest of your fellow workers a huge favour and destroy it, irreparably. Stick it in a vice and bend it in half with a hammer or something. The most ridiculously dangerous and stupid tool idea I've ever seen. And being marketed mostly at the casual home enthusiast is just mind boggling to me.

I got some good advice from my grandpa before my first wilderness trip into northern Minnesota. He said “think hard about how you are going to swing your axe. Especially when you are a 4 day paddle out of trouble”.

I appreciate that you show that the tool is unplugged during your talk by having the end of the cord sticking out of the table. I'm sorry to hear about your injury and glad to have forewarning on this type of blade in particular.

I first saw these blades a few years ago, and my first thought was "aw hell no". I've managed to hurt myself twice with a grinder, once with a metal cutting disc (that did a top job of slicing through a work glove and the back of my finger when it kicked back), and once with a wood cutting disc (basically a circular saw blade that did its very best to take the end of my finger off because I put the guard in the wrong place). Thankfully neither was life changing (were trouser changing though) but its proof that no matter how much you think you've got it all under control, sometimes, you don't.

I will never use my chainsaw carving disc again. Scary stuff. Great vid.

It's because of people like you that I still have all my fingers complete after starting woodworking as a hobby. Thank you, dear Stumpy Nubs!

I am so happy to hear you actually tout a personal responsibility story that actually also involves negligence on the part of manufacturers and poor marketing. Yes you are responsible for you... but manufacturers are responsible for properly warning you. People look at the lady that got burned by hot coffee and sued Mc Donalds as a joke.. but Mc Donalds had over 200 complaints of severe burns due to the exact same problem.. the woman that sued had to have skin grafted back onto her burned areas. The difference with this is that angle-grinders are inherently dangerous so manufacturers can get away with just blaming inexperience or improper use.

The kickback from a chainsaw is terrifying enough where you have a pretty large fulcrum to offset the force and deal with it safely. Having that short of a grip on a blade like that is just asking for trouble.

I've been doing woodwork for close to 50 years. That has got to be the most dangerous things I've ever seen marketed to the common homeowner/DIY person. Great video, all of yours are!

It has chainsaw teeth, therefore must be treated like a chainsaw. They have a different set of rules and without the proper equipment and guards it can't be handled safely. Angle grinders do not have the same set of safety features that chainsaws have such as kick brakes or hand guards. Inappropriate warnings and lack of accessories enabling it's safe use is reason enough to ban it. The manufacturer is responsible for understanding their products compatibility.

I've been a carpenter for 42 years already. I've run just about any electric tool you can think of, sometimes in precarious situations. But these are where I draw the line. They can get ahead of you way too fast, and there is no turning back at that point. There are other tools to accomplish whatever these do, and the little bit of extra time is well spent when you consider the possible alternatives.

I wanted to use this cutter today for a small job, but went with multi tool saw. Way safer. And now I saw your video and after considering that I had this way of thinking several times now, to go with different tool, I will stand up after writing this comment, go to my workshop and throw the saw into bin for scrap metal.

I used to do a lot wood sculpting and thought this tool was the answers to most of my problems like scorching, and clogging. Yes it removes a lot of wood very quickly. To start with it looks dangerous and I had reservations about buying it. When I put it on my grinder the centrifugal torque inertia it produced because of the extra revolving weight alone should have told me there was a problem. It cost me 11 weeks of work ( unpaid ) and the loss of 2 fingers ( it went in side ways, not straight across ) .... You can still buy them, the blades, not the fingers .... and I believe there is a 9 inch version as well....

Thank you, James. Just seeing this, four days before the end of the year...and I can say without reservation that this is the most important YT video I've seen this year. I'm sorry to learn about your injury, and of many of my fellow commenters injuries. I bought one of these tools this past summer to assist in my new chansaw carving hobby. Seemed like a great tool, but there were a few times where it snarled at me. Luckily, the one kickback was moderate and didn't get that close to my body. Well, maybe not luckily; if I hadn't seen this video, I could still have conviced myself, "I got this." At the time, just thought I needed to gain some more experience. Well, the only additional experience I will have with this tool is to bury it or throw it off a bridge, so than neither I nor anyone else can use it again. I'll take the extra time to remove the wood, in ways that I have maximum control. Great channel. Be well.

I saw your video, when you got hurt. Immediately spread the word, not even once, to use this device. At almost the same time, I took care as an anesthesiologist to a experienced carpenter here in Mexico. He also was using the same dangerous tool ! The chain broke, and got him in the face and part of the neck ! Thank you for recalling this issue. To everyone; KEEP OFF THIS TOOL !! Hope your hand gets better

just want to let you know that I bought one of these shortly before your injury to carve out the old moulding of an arched top front door James. I would have been working with it above my head. You may have saved me from a potential injury and I still think in horror about what could have happened.

My first thought upon seeing one of those blades years ago was "what kind of madman dreamed that up?"

In my experience, the most dangerous "tool" is frustration. Perhaps haste or laziness? Call it a three-way tie. That said, that tool looks insane. A very rapidly spinning disc with an aggressive-toothed chain wrapped around it? What moron thought that was a good idea? - The omni-directional kicking is something I learned about first with a floor buffer, risking only dents in walls.

I saw the other video you did on these cutters and because of that vid you likely saved my father from an injury. He was carving an old tree stump into a bird house and had one of these in his cart. Luckily I saw your video and remembered how dangerous they looked and told him not to use it. He ended up with a new multitool and did the job that way. Just wanted to say thanks.

I find angle grinders to be one of the scariest tools when using them with their intended cut off disks. The first time I saw the chainsaw wheel, I almost had a heart attack, even before seeing your (or anyone else's) injury from one. I had cold sweats from the mental imagery of the damage these things could potentially do. I mean the angle grinder and the chainsaw have got to be among of the most dangerous tools one could use (I own both). Combining them is a nightmare from hell. Thank you again for being humble enough to share your experience James. I'm sure you've saved countless people from injury.

The first time I saw this disk at a store, I said "damn, that's the finger remover 5000" to a buddy I was with. He ended up buying the damn thing another day, used it the same day and got rewarded with 2 fingers mangled so badly that nothing could be done. He definitely knows how to properly use a grinder, it's not like it was his first time using one. The tool is really just too aggressive, and you don't have nearly as much control over a grinder as you'd like to think that you do. Like you said, just one very unexpected jerk in am unexpected direction is all it takes.

I thought that was a beginner lesson. But my father was a steel fabricator and welder and caprtener. So i grew up using those types of tools, and have taught my own son how to safely use them safely as well. Have i injured myself with one ? Yes. Did i learn from it? Also yes. And that was mostly because i was tired and not paying attention. Which in my opinion is one of the foremost causes of spinning tool injuries. I (thankfully have gotten away from major injuries, and only had minor ones because of my quick reaction due to experience) still not a tool to mess with if you're inexperienced.

Stumpy, thanks for sharing. My friend lost his thumb using this dangerous chain grinder! Sadly it happened in another country and he had no recourse but to live with the pain. Stay well my friend!

I can picture the meeting " I KNOW - let's take the most dangerous part of a chain saw, double the RPM and bring it two feet closer to the operator - we'll make millions!!

The way you explain things so clearly is truly wonderful. You speak in such a respectful informative manner. Even when it’s not a tool I plan to use, I end up watching the entire video and learning something I had no idea about. Thank you so much! Your channel is amazing.

I saw one of these blades in the store while buying new steel-cutting disks, the pure glance of it made me feel uncomfortable and started to make me imagine what damage these things could deal. I'm glad to see this video as it fulfills my expectations that these are dangerous tools, I don't want to imagine how that accident must have felt like and I'm glad to hear that you've recovered well and use your time and range to warn potential users. Stay safe!

I'm sorry you've gone through this. Thank you for sharing your experiences. I've never even thought about these tools, but now that I've seen this video, I will be showing it to everyone.

Right after your injury I dug mine out of a drawer, put it in a vice, and whacked it with a hammer. I only used it a few times. I never liked using it. Now, I don't have the option.

I've been eyeing this blade in the box of grinder discs I inherited from my father in law, really tempted to bolt it on and play with some sculpting. Something told me it just wasn't a good idea. Thank you so much for posting this. Instead of just throwing it away, maybe I'll use the steel for a little welding practice.

You have a brilliant way with words. Calm, concise, and professional. I'd have loved to have you as a woodshop teacher.

Thanks for posting this and sharing your story. You've probably helped save thousands from a similar or worse fate.

A friend bought one for me to do some work for him. After 30 seconds it was shut off and filed in the circular file. Dangerous is not the word for this tool, DEADLY is more accurate. I hate this tool with a passion. ( not the side grinder but the chain blade)

I'm NOT a work worker; I'm an part time artist who thought these would be super badass for sculpting. I have two grinders...so naturally I bought two "sizes" of these blades and went to work with them in a most haphazard way. According to you, I was doing virtually everything I possibly could to chop off my fingers. I KNEW they were sketchy...I'm not blind. It's a freaking CHAINSAW on your GRINDER for Chrissakes! I'm so glad and grateful for this video. I'll be tossing those blades from my shop immediately. Thank you!

this is possibly the most clearly articulated video on youtube, the lessons on risk could be applied to any field.

Just discovered your channel a couple of days ago. Not really much of a wood worker, but I find your videos very informative, and your delivery and pace of information easy to digest. This one is absolutely stellar. I wouldn't be surprised if it helps prevent multiple injuries. Well done!

I’d like to just simply say that you are so incredibly educational, well spoken and a truly great teacher. You remind me of the teacher in high school that everyone liked and respected because they/you are just that good. We are getting into woodworking and you are my favorite……bourbon moth is the only other person I watch. You’re both different and amazing. Thank you for being YOU and doing it so well. I think we will not own one of these grinder blades 😬

As a DIYer who often reaches to the edge of his abilities, I thank you for this video. A new Sub just for this one.

I just found your videos recently but you seem like an outstanding person, sir. I hope more people find your channel, stay informed and especially hope you keep improving in your therapy!

Thank you for your work and honest feedback. I am sorry to hear your hand is still hurting. God bless you.

I ordered one of these from Amazon. When it arrived, I took a good look at it, and it's never come out of it's packaging. This thing is something out of a horror movie.

I bought one of these things a couple of years ago and have yet to put it on my angle grinder (a combination of a lack of inspiration and what turns out to be a very healthy dose of paranoia). Given the number of near misses I've had with a standard angle grinder, I think I'll be throwing mine away. Thanks for sharing.

I work in a tool shop at times. Today I had a customer ask about one of these horrors. I told him about your injury and laughed when he said that sort of thing happens with inexperience. 20 years ago I had a very close call with a toothed disk in my grinder and since then have no interest in using one again.

This is an absolutely fantastic video! Thank you! I’m a total novice and have been thinking about getting an angle grinder and watching videos and this by far is the most informative and best explanation of use , dangers and safety I have come across. I think you’re truly sparing people serious injury. 🙏💥

Thought about getting one of these recently. I won’t be now! Thank you for this video!

First of your videos I've seen. You'd make a fantastic class instructor. Your delivery is impeccable and you hold attention like a magnet. Keep it up!

Thank you for this video. Let me say that I'm thrilled that you're doing better . I know by your previous videos of your struggles to recover. I too have had dangerous experiences, like you I've come out battered and with serious recovery. issues. But this note is about you and my appreciation for you and the knowledge you pass on to each of us. Sadly for you and your family, that video is a stern warning of WHAT NOT TO DO! BLESS YOU And may you continue to recover from this horrible "accident"!

As a metalworker who’s experienced the dangers of angle grinders (even with just a sanding pad) over the years these discs are insanely dangerous.

As a machinist and metal fabricator for over twenty five years I've worked a lot with 4-1/2" and 7" angle grinders with grinding and cut-off blades but this chainsaw cutter just scars me, I seen one a while back and thought it might come in handy in certain situations but imagining what damage it could do stopped me from getting one and now after seeing this video I see that was a wise decision on my part not that I always make the most wise decisions.

Quote of the day: "overly aggressive, irresponsibly marketed finger shredder." From someone who knows, not an imaginary, comment board "expert".

I shuddered at the sight of this blade before I even watched the video. Having worked in steel ship yards during my career, a 4 inch angle grinder to a steel worker is like a hammer to a carpenter. Even when it's used in it's original purpose, to grind metal with a stone wheel, it is a dangerous tool. I treat it with respect even if it's not plugged in. I can't count the number of coveralls ruined and skin "raspberries" I've had over the years just with a stone wheel. If I had been using this blade, I would be missing several body parts at the very least. The uninitiated don't realize that the 4 inch grinder, with some capable of 10,000 to 11,000 RPM, is the fastest spinning tool in the arsenal of hand tools. Just turning it on can generate hand wrenching torque. [EDIT] not to mention that as the blade wares out, high RPM tends to make things fly apart at the seams. Put a worn out wire brush on a 4" grinder and after a few needle sized darts in the thigh, you get an idea of the flying shrapnel this blade could create, worse than a hand grenade.

Some angle grinders have a feature called kickback control - when it senses kickback (pretty accurately too), it shuts off the motor completely. This probably puts the safety of working with these up a few notches. Also - there's wood/PVC cutting discs which basically only have 3 special teeth and no chains attached. Companies like Bosch or Wolfcraft market these in Europe.

Those chainsaw teeth are meant to be used flat. When they are on a disc like that, the depth gauges can't do their job and the teeth dig in. Redesigning the depth gauges to avoid kick back would reduce the danger significantly.

Thank you. I talked my accident prone, uncareful Dad out of buying this type of product by showing him your original accident video at the time. This updated vid is great.

I just bought my first angle grinder yesterday, and have just taken up wood-splitting last year. Thank you for your video so that I do not take the short-cut and try to combine the 2.

I've used an angle grinder many times and I am still sometimes caught off-guard by how strong the pulling/pushing force of them are. And I'm the kind of person that always reads even the smallest square inch of instructions and I'm wearing the appropriate safety gear (which was just ear- and eyeprotection for me when working with angle grinders - maybe I should up that in the future). But by the looks of the chainblade alone I can imagine how forcefull the pulls and pushs from this blade would be and I'd never touch that, because the gain-risk ratio just doesn't seem right.

The first time I saw one of these I thought Hell No! Those things are an accident waiting to happen. And I consider myself fairly experienced at using an angle grinder.

I love your speaking voice. You are so measured, deliberate, informative and calming. You really could expand into audiobooks or similar. So relaxing! Also, cool woodworking stuff.

Been watching your videos for awhile and have always found them quite helpful. Happened upon this video while looking into chainsaw blades for carving. I really appreciate your sharing your prospective and clearing laying out the danger of these blades. Thanks!

I love this channel. All the information is always technically correct and the emphasis on safety is highly appreciated.

after having used anglegrinders on metal parts at work i have to say, that if you use a cutting disc and start misaligning the disc during your cut, it can catch on the workpiece either yeeting the workpiece or even breaking the disc and shooting disc parts everywhere. The half circular guard more or less prevents deadly shards flying into your chest but even rebounds can cut you open like nothing.

Anyone with a few hours of chainsaw experience and an oz of sense would realize this is just 360* of pure kickback potential, as you stated. Remember folks just because you can doesn't mean you should (this product case in point).

I normally don't watch these kinds of videos but this one is damn good. Its clear, concise, and offers ways that companies should be marketing the tool. Definitely saving this incase one of my more DIY-y friends starts talking about this blade.

I like your videos. I just recently stumbled upon them, i´m nowhere near as crafty or doing any handyman work or woodwork, but just watching a few of your videos are so nice and educational over a craft i normally don´t perform myself, but knowing about some things here and there when i might find myself in a situation, makes me feel better. Everyone finds themself one day or another where they have to do some little handy work.

I saw one of these on youtube last year and, being someone who has always used chainsaws a lot at work, thought this was just asking for an injury. The way a chainsaw chain works is by having a low enough tension on the bar/chain to allow the bevel on the blade to flex into the timber when it hits a point of resistance, then flick back when the following guide hits the point of resistance. This way at any given time the blade it only pulling a small chip out of the timber on a circular grinding disk you wouldn't be able to have enough slack to allow a chain to operate in the proper way, which means the bevel will dig a larger chunk out of the timber and, being an angle grinder, it will jam and kick. Knowing how a chainsaw blade works tells us that the person who designed this tool didn't know how one worked and any subsequent companies producing this product have not done the proper research to make sure they are making a safe tool. To me, this is not a case of personal responsibility, but rather it is a faulty tool that is designed to be unsafe. If a tool is brought to the market with an electrical short you do not know about and you get electrocuted from it, that is the manufacturers fault, this is the same concept. I'm glad you didn't get injured to badly and you can let people know to stay away from it.

I’ve been using power tools, including chain saws, all of my now lengthy adult life. Having used chain saws in some of my employment, my first reactions to seeing this device, particularly on a tool without automated safety shut off, were a shudder and thoughts of dismay. I’m glad a process of regulation of it has begun. I’m glad that someone knowledgeable and respected in the field has so eloquently spoken out on its dangers, and thank you for that.

I am just now seeing this video. Thank you so much for sharing your experience and information about this tool. Very insightful. I haven't watched a single video you have made that I didn't learn something new or get a different perspective from.

Thank you. I was looking at these, but now I will steer clear.

Learned early as a welding apprentice years ago that using the left side of the grinder ends up with it getting thrown to you. With just a grinding disk that was a painful lesson. Can't imagine how awful that lesson would be with that disk.

I've been in the landscape/tree care line of work my entire life. One of the most important phrases my old boss drilled into me was " A dull chainsaw is much more dangerous than a sharp saw". Pretty sure those words saved my life a few times.

Well said and right on the mark! I have seen these kinds of accidents. I have made mistakes where I was lucky enough to escape injury AND I KNEW IT AT THE TIME. I agree with you 100%

You sir have a very nice way of understanding what happened and what was actually wrong.

Wow, never seen that wheel before. I used to do chainsaw repairs for a living and the first thing i would do to any saw i was working on was remove the bar and chain, these only went back on as the last step for final tune. The thought of combining a 6 inch grinder with a saw chain is like a shark with a laser! Shake hands with danger!

I have used grinders for over 40 years. I learned my trade in a steel works, so was taught how to use tools properly, whatever they were, when I was an apprentice. When I saw one of these discs here in the Uk for sale a few years ago, I thought then that they were far to dangerous to use in this manner, i.e. on a grinder. I don't like using a chainsaw, even though I am super careful when I do, but knowing how a grinder of ANY size can bite you, these discs are just plain stupid as an idea, to even just think of using one gives me the wobbles. I have had the odd kick back over the years (who hasn't) but none of them would have ended in my loosing a hand or possibly my death and I consider myself an expert with a grinder. If I don't think these discs are safe to use, how does a diy'er think they can handle one? Be as careful as you like, consider yourself as talented as you like, but when these discs kick off on you, GOOD LUCK IN HOSPITAL. It'll only need to bite you the one time. Don't use one of these discs people, it's not worth the risk or the long term damage, IF you live.

I got one from a yardsale few years ago. I never used it. After seeing your video about the chainsaw disc, I won't attempt to. Thanks for sharing

I never planned to use one of these because chainsaws already scared the piss out of me alongside angle grinders, but this just convinced me I was right on this attachment but taught me about how to use an angle grinder much safer should I ever need to use one for something the much safer and less aggressive multi-tool can't do.

I never used mine again after your accident video, James. Some things just can't be controlled when they get away and that tool is one of them. Thanks for taking the time to share your experience!

I cannot for one second ever see a valid use for this blade where it isn't beaten out by something safer and more controllable. Its just horrifying, not least because the depth of cut limiters on the chain are bent out of the way by wrapping it around a disc. It's going to be even scarier once it's been blunted slightly...

I bought an angle grinder and this very attachment but haven't used it yet. THANK YOU for this video, glad I watched it first. I just happened upon it, I wasn't looking for an angle grinder safety video.

I know I’m late to the party but I’ve just bought an angle grinder for power carving and there’s such a huge learning curve for everything you have been saying in this video. There’s not one piece of information that tells you about the tool pulling . I had to learn the hard way about the tool pulling in different directions and thankfully I wasn’t hurt, but a few times when the grinder jumped towards me I was so thankful I wasn’t cut open

couldn't agree more-an angle grinder is dangerous enough on its own. There have been two local deaths from angle grinder accidents in the last 20 yrs one of which sadly i was involved with(divided mandible and internal carotid artery) This blade will result in lots of work for local A&E departments and i'd support it being banned in Australia also . I am a retired surgeon

I've had one of these hanging on the wall for 30 years and never found a need big enough to try it. I believe really smart people learn from others mistakes, and NOT playing with one of these seems like a really good idea.

That was a perfectly executed sponsor at the end. You're probably the first youtuber who has ever interested me on a sponsorship before, good job.