@@pacificnorthwestnative5050 a little while ago I was who're wheeling and after the job my leg felt itchy and sorta hurt, i thought I had a huge zit on my leg, so I rolled up my pants and had a little wire nub sticking out of my leg, I pulled it out and it was buried in my skin like 1/2 an inch. That made me put the guard back on for everything, I usually only ran it for cut off wheels after a friend blew a wheel up and got stitches on his face... He was lucky because he wasn't wearing glasses.
I grew up on a farm where we use massive machines. We were always taught that every powered tool, no matter its size, was always trying to kill you. It was just waiting for its chance.....
@@mihan2d Nah man not even drills are a safe haven, some drills are powerful af and have an insane amount of torque and if you're not careful when tightening something and it reaches it's maximum tightness (usually with metal objects not wood but that's not always the case) instead of tightening the screw or bolt or whatever all that power will go straight into turning the actual drill and not the drill head and that shit can snap tf outta your wrist
This has been one of my favorite series you guys have done! I mean I seem to love all your videos but the explosives and these disk explosions are just fucking awesome
7:12 For those who don't know: he had to make sure the last few seconds of high speed was saved before it was overwritten since high speed cameras are always recording.
That would be an impressive feat. Their max rated RPM can be up to 10k so you’d need something both fast and strong enough to do several times that before I think there would be any chance of the failure you want.
needs MORE TARGETS! like oildrum, propane canister, fully pressurized car tire, old moose skull, running toaster, teddy bear, playdough monster etc. also PRESS the dead router
This is the reason why you should always wear a face shield when you use a grinder. The wheels can explode even when they are not over spun. Great video for workers to see.
Nice safety demonstration. You guys should start making those industry safety videos where they show you the careless employees who do not follow the safety rules and have big problems. You should put some of your mannequins next to those exploding grinder disks next .
Somewhere in my garage (which I inherited from my grandfather) is a World War 2 era 1/2hp grinder with no guard. I won't throw it away because it's an antique....but it'll stay in the cabinet.
Wow, always interesting to watch! You could put some pig bones into the gel. Might be interesting to see how it would hypothetically damage someone standing around.
man I have to show this to my colleague who uses the grinder without the guard or handle. Last year one of the discs exploded in the workshop but thankfully somehow he didnt get hurt.
Just found your channel love it. Don’t know if you have already done this. Try overclocking a wire bench grinder disc. I know the damage that can be done. I reckon you guys would love the devastation it can cause. It like a few hundred thousand needles flying everywhere.
I got hit to the neck by a rubber/polymer blade fragment. I blacked out instantly and woke up on the ground.. Luckily I wore a hoodie. My head movements were a bit stiff for a while!
Some things I'd like to see "spun to death!": old records (45 vs 33 vs 78!), a car clutch, spin a ceiling fan ("upgrade" the motor) until the blades come off!, RC helicopter blades... But what I'd really like to see though? A drill bit in slow motion. Spin it in a drill press like normal, only so fast that it warps and breaks with a super powerful (and fast) drill press motor 5,000,000! Obviously in slow mo!
Curious how much that piece of the grinder that went through the gel block, and what it weighed and speed feet per second it was traveling? What bullet does it best correspond to.
I am curious if the medium disk would got through flesh and bone. Though really, I would be more concerned with taking the shrapnel in the groin or abdomen, where there are more major arteries.
Remove the guard from your grinder? Reminder: you're constantly risking one second of bad luck and a lifetime as a eunuch. The more you say it can't happen, the greater the chance you'll become a meme after it finally does.
if you can you should rev up a flycutter. i've seen a video from a shop where a faulty machine went to 12k rpm with a flycutter in the spindle and it went tru all sorts of stuff.
I think you should put some fins on the blade and place the router over the snow and see if you can make an snow tornado or over a fire and make a fire tornado
Damn! I'm glad I always keep my guard on but now I wonder how much the guard would actually do to stop shrapnel like that! I also wonder what the wrong kind of wire wheel would do, I noticed that you can fit some of the ones only meant for 3000rpm bench grinders onto 10,000+ rpm 4 1/2" grinders... Actually I don't know if I want to know what that does to ballistic gel. Edit: Oh yeah, I remember reading about someone using saw blades on their 4 1/2" grinder. They said it was extremely useful but the danger factor just made me cringe. Do you think you could test that?
Bro..that is a small grinding disc. Imagine catching a larger surface grinder wheel to the face. This is why I turn away when I turn on a surface grinder.
Okay the shrapnel that hit the tripod is a sign that this can happen much often than winning 1 Million Euro but i think befor something like that happen again you get hit by a lightning Sorry my english is not the best
The funny thing is that I've broken several 5 1/4" disks and taken multiple hits protected by only 1-2 layers of cotton, and the worst I ever got was a bruise. I must have been very lucky. Also, if you do get a more powerful router to break that big disc, how about you try to break a circular saw blade as well?
I hope they make sure no other living things are nearby or in harm’s way when these experiments take place: maybe a high-pitched emitter, some kind of an electronic squeal pitched at a high enough volume and frequency - so that it’d drive away other animals - could make sure no stray birds or mice or jackrabbits or deer, or even a neighbor’s wandering cat or dog, accidentally wandered into range and got injured? 😕
When the camera got hit I just thought: This is how it would end it you stood where the tripod was standing... You blink and suddenly you're bleeding to death... Scary!
You should buy an air motor which is capable of spinnig stupidly fast. That would be perfect for grinder disks etc. Can you please try it with an big massiv disk which is used on surface grinders like in a machine shop.
@@Beyondthepress And no smoke to let out! At this point, I'd like to see how *the grinder guard* would fare against the blades. As with cutting and grinding discs that have let go on me (small grinder, small blades, failed due to excessive wear), didn't do anything. I've had the guard on always, and it did little to prevent the shrapnel from thudding against my jacket and pants. They only got dirty, and I've felt worse impacts from raindrops in very windy rain. (Veneilemässä, ja kesäkuuro yllätti, sekä powerparkista poislähtiessä sillan kohdalla ukkoskuuron alle jäännissä.)
4 года назад
@@tube71000 Spin something at 50k rpm and friction is enough to make stuff evaporate. Smoke is still a possibility.
Or just inexperienced people, that didn’t get proper training, it was within my first year of construction. Everyone’s guess was that it was warped and I didn’t notice. 15 years later and I damn sure check every time now.
First time I used a circular wire brush in dremel and somehow it was already on the highest rpm, holding in hand and connecting it to the power in a fragment of a second it exploded. I was so lucky (didn't wear the safety glasses yet) I was holding in such an angle none of the wires hit me. I found wires hanging from the ceiling weeks later.. Since that I always put on the glasses and always checking the switch position before connecting it.
hmm, strange. I exploded numerous cut-off discs on my Dremel on max rippums, got not a single wound, no damages to nearby things except for the workpiece I was cutting (it usually explodes due to "kickback" sort of event, other most common scenario being applying too much sideways pressure). Time to repair my Dremel for some experiments, I guess...
@@Beyondthepress Also test few of the common thicknesses. I had 1mm disk jam between two sheet metals while working on car. Angle grinder went ballistic and disk exploded. Found sharp triangle peace stuck on skin on front of my forehead. My skull stopped it, but i would like to know how far into flesh it would go. And yes i was idiot and not using blade guard back then.
@@Hellsong89 you can't test for that. too many variables. how big was the piece, how aerodynamic, how fast it was going when it exploded. etc just wear leather safety gear to slow it down so it doesnt shoot through you and be careful
You can see reality set in for Lauri at 9:38. At first he was smiling at seeing the astonishing destruction, but then it really sets in and he mostly stops smiling, and you can tell he's really thinking about the true possibility of dismemberment and death from those grinder discs.
In NZ some poor fool kills himself nearly every other year with incorrect use of grinders. I worked with them for four decades and still take care. Cheers , Its good work your doing.
4:07 Now I don't speak Finnish, only Danish and a little swedish, but it sounded a lot like Anni just said: "What the hell happened to the camera?" in Finnish, of course.
On our grinding machine for sharpening the punching tools, one of my colleagues forgot to switch on the holding magnet. The tool hit the 25 cm diameter, 5 cm wide grinding stone. It broke, destroyed some machine parts, and made a big hole in a concrete wall in 8 meters distance...
@@micha_el_ Yep we need more protection like for stuff like that :D But I have planned to get some concrete walls and but dirt behind those to handle stuff that moves 300m/s and weighs many kilograms
Grinding stones are not thin...egads that's scary. I mean that's a bit I assume would be the least likely to fail. Just when you thought it was safe to go back to the work bench....
My dad took one on the chin from a 3" cutoff wheel. 14 stitches later, now I notice a face shield hanging next to his toolbox. These things will put a hurtin on ya...
"...It's game over. " 😁 I've been using grinders for years now, but have never heard or thought of this danger before. I've had discs break apart on me while working but attributed it to poor working habits. I guess exceeding the RPM limit would be considered another poor work habit. Learning can be entertaining as well as blowing stuff up. Thanks for the lesson learned.
These were crazy but interestingly informative videos, I was surprised the medium disc cut through the gelatine so quickly and easily, is it possible the larger one could cause it to explode, it would have been good to see if it did, if only the router hadn't said, "to hell with this" and gave up the ghost. I look forward to the large disc rematch.
