Exploding Grinder Discs Vs. Ballistic Gelatin | Deadly Shrapnel danger!
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- čas přidán 7. 12. 2019
- How dangerous are exploding grinder discs? We try with 3 different sized small, medium and HUGE. All is filmed with Chronos 1.4 high speed cameras.
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Nurse: Well, doctor? What is the patient's prognosis?
Doctor: It hit his major bluud things on his leg, it's game over
This made me really laugh
Hahahahaha priceless
Doctor Lauri :D
"It is really dangerous and we have to deal with it. Now put the leg on the Hydraulic press plate..." 😁
This patient is soon to let the smoke out, there's nothin.... OH SHIT THE HIGHSPEED!
Disk bits thrown at 450 km/h (280 mph), tripod leg ripped off, router burned, and a purring cat. This video has it all!!
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? 😕
@@defunctuserchannel My spirals are much smoother, although his went 8 times as far.
Please check the cheapest discs explode threshold vs. expensive ones and measure average RPM when these explode
That's really good idea!
If you message Project Farm he'd do it
@@Beyondthepress also try to experiment it with guard on, to see if it can hold that fast shrapnels
@@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
Was that nelli purring into the mic? Hahaha
Yes, she is adorable and plump and purry
@@WineScrounger yeah. SUCH a tubby. Looks like it likes the cat teats. Lol.
Very fat cat
eoin keane -- well-marbled
maybe they can make a 3rd channel, "Can Nelli destroy it." oh noo
Yes that was me that said I will put the guard back on my grinder, and I did. Thanks for the crazy demos!!
Pacific NW Native you must’ve never had one blow up or nail your hand.
@@loganthesaint once, but got lucky, and I had the wire wheel grab my shirt a couple times, that hurts!
@@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.
@@volvo09 It helps buying the good ones, and change them out frequently. It was a cheap hbr freight one that blew up after just a few minutes..
Simply Google "angle grinder accidents" images.
Takes less time and even more convincing.
all electronics run on white smoke, when smoke comes out it can't run anymore
you can get the kit to put the magic smoke back inside for sale on the internet.
you high man?
Yup when the pixies release the magic white smoke you know your tool is truly björked.
That’s what called “technical smoke”.
The British car industry standardised electrical smoke and gave it a brand name. We call them Lucas Electrics.
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.
Router smoke, don't breathe that!
you can get internet sickness
All the packets has spilled out
close your lungs
@@antoineroquentin2297 must put on a safety moustash
Will it blend?
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.
After the last grinder demo you guys did, I went to work and put the guards back on my angle grinder- no bull shit!
That is freekn scary
sadly there stilll people who think grinder metal guard is a joke
I sometimes have to take the guard off of mine for the jobs. I've had them blow up on me and it's not very fun.
"I just going to use sandpaper from now on." Bwhahahahahahahahahahahahaha
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!
Well, not necessarily "end, but judging by the height of that cut you could kiss you knee goodbye... If you could find it afterwards, of course.
I thought much the same thing better the tripod than a real leg/person
You can break those tripods apart with your hands. Still though, that's a trip to the ER and a WCB claim right there. Holy sheeet!
Sorry, not related to grinding discs, but just like the guy who blew his leg off shooting a lawnmower full of explosives.
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.....
That's the God's honest truth .
No matter what you are the softest thing in the room
Excellent advice
Except for the drills. Drills are nice. Drills are friendly, at least if you use them responsibly. R-right?..
@@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
At 04:07 - Finnish swearing simulator 5000000. :D
This is Finnish but not the End! B)
"Let's see what looks like if hits leg"
Tripod- "next time YOU can hold the camera!" 😂
Moral of the story: Manufacturers recommendations are not there to mess you around. Stupid will hurt.
Shouldn't really be a recommendation it state its required that gard is used or risk of death
If you're gonna be dumb ya gotta be tough.
And the do not do list is an instruction manual for how to destroy something and yourself.
Even the small bits are a femoral artery away from death
I think just the lb force of the blast would kill yeah before the bleeding to death. Look at how that gelatinous mass moves.
Death by cavitation
Not femoral artery; blood things
@@rootz420 only if it hit your head
I’ve had a grinder disc explode on me, it’s terrifying. Embedded over an inch into the 2x4’s near me. Guard went back on immediately.
That is definitely a "brown pants" moment for sure.
You were extremely lucky not being hurt.
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.
For comparison, I'd like to see a demonstration of a disk failure with the guard mounted. Will the guard _really_ improve survivability?
1:47 The Mic is in the purrrrr-fect position. 😂😂😂👍
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
Nelli is the sweetest cat!!
I was waiting to see him again. Adorable cat!
volvo09 her
@@tinldw I knew I was going to be wrong!.... I even had her written.
I have an orange cat that looks just like her...he's a licker too lol
I clicked Like as soon as I saw her. About 1:45 you can even hear her purring! Bless her paddy paws.
Seems like it was actually the small shrapnel that killed the tripod
Scary how far the pieces flew! All the right things happened to make it a top notch BTP video.
Cat: check.
Stuff flying everywhere: check
Everything including some camera equipment either blown up tore up or smoking: check! Great video!
"...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.
makes me think twice about just using a Dremel tool without safety glasses.
I had a Dremel cutting disc fragment on me, it put a big chip in my safety glasses. Never work without them!
Face shield in addition to glasses.
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...
@@victortitov1740 are you dead now?
Came for the explosions, stayed for the humor. You two are better than the old Mythbusters crew.
Beautifully shot and edited. Thank you both!
I checked the diameter of that tripod with the diameter of MY "tripod" I'm using my leather apron and guards from now on
LOL
Yeah. If it would go through something the size of that tripod, what could it do to your swizzle stick?
@@MK0272 I think it would take the "swizzle" right out of it.
@@MK0272 it would become a swizzle struck instead....
how about using common sense?
No comment on the fact that a piece absolutely went for the other tripod in the sedcond test.
1:47 Awwww that Nelli's purr was sooo cute! She really likes to be in Anni's loving arms. :)
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.
IT released the magic smoke that powers all high technology!
Being a machinist, I'd expect you would make a new leg for the wounded tripod.
Did he, or did he use a different tripod? In the last test, it looked like they used the broken tripod to get I higher angle from outside the bunker.
@@michaelparham1328 It looked like they used a different one where the broken one was.
Just pop it on the healing bench for a while.
The slow motion is absolutely glorious.
No face shield can protect you from such carnage.
Killer experiments. Literally!
Now overspeed a wood cutting carbide tipped saw blade!
I second that :-)
Even if you need to make a rotary disintegrator five million.
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.
Fantastic! Love the clear ballistic stuff.
Yep it was nice to have the new and nice block for this
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.
The spindle on that little router can hardly handle the large grinding disc. So it definitely wouldn't handle a big heavy surface grinder disc.
@@xenonram Sure, for such a big grinding disk you would need a much larger motor.
I have though about using large turbo with out the inlet side on it and large air tank. Should spin over 50 000rpm and has a lot of power
@@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.)
@@tube71000 Spin something at 50k rpm and friction is enough to make stuff evaporate. Smoke is still a possibility.
Very awesome folks. One of the best ones yet. Thanks for sharing. Kind regards and be safe
These grinder disc videos should be mandatory viewing for anyone in the construction industry.
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.
Pretty close. She said "What the hell, the camera has fallen."
Let the record show I have never taken a guard off any of my tools, my fingers and limbs have thanked me many times.
The medium disk explosion was terrifying! WOW! Awesome video! I love your channel! Be safe and keep up the good work!
My favorite pair of crazy Finns that I can't help but like. Fantastic channel and terrific work.
The cat sounds a couple minutes in made my day
"Mitä helvettiä toi kamera on kaatunut"
"Voi vittu"
😂😂😂
I'm not Finn but I know what does it mean
And it made me I :D
*laughs in perkele*
@@WineScrounger oi sata it's my favourite Finnish swear
@@andrij5925 If you watch the Finnish film "Rare Exports" there's a fine "Voi vittu!" in there.
For the non Finnish speakers.....
"What the hell that camera has fallen"
"Oh fuck"
that was great! good call getting the new piece of gelatin, it really helped illustrate the amount of damage that can be done
I love your guys' videos. Please never stop making them!
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.
Nelli approves of the deadly upgrade of this device!
The first thing I did was to make my son sit down and watch this video. The second thing I did was to put back the guard on all three of my grinders. The third thing I did was put the grinders way back in the highest shelf so that I only use them when it is absolutely essential. Thank you.
Holy smokes! This might be the craziest / best video from you guys so far. My wife and I love watching you guys. Keep it up!
-West Palm Beach, FL, USA
All deadly. Little disc killed tripod, medium killed gel and the large disc killed the router!
1:24 Nelli claws vs ballistic gelatin
Thank you for another great video. You never disappoint me
Love and hugs from Denmark
haha " I am going to sell off my grinders and use sandpaper" killed me
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...
Really cool, for a few seconds there that gel was acting like water to disperse all of that energy.
Flesh does the same basic thing. If you watch a high-speed clip of someone getting punched, you can watch the ripples in their flesh.
Hydrostatic shock is the effect that you are describing.
Thank you for making videos that are funny and entertaining and at the same time talking about real safety stuff, it is not easy to do both things.
Liked your video even before watching , you guys never disappoint 👌🏻
1:47 Epic purring.
"MItä helvettiä toi kamera on kaatunu?"
"Voi vittu se on katkennu!"
🤣
For anyone wondering, the total force exerted on the disk is: 0.5*angular velocity^2*mass*radius. That's why the bigger disks couldn't withstand very high rpms. The higher mass combined with the bigger size meant that they were under much more stress at lower rpms.
"Holy shit, we cut the tripod in half." Lost it.
I keep wanting to make an _"in Soviet Russia..."_ joke about 🐈Nelli's licking, but it's too bad haha 😚
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
Yes squish the dead router . its proper and respectful cerimony for the casualties of experimental science events.
This router has let all its smoke out and must be dealt with ........
You two have the best reactions so excited about the utter destruction of things. Be safe with your future videos.
Just have to say Anni is a great camera woman. She always gets great angles and is very stable.
Sounds like you guys are fishing for a tripod sponsor 😉
The snow is beautiful 😍
Sadly it's mostly gone already. 😐
I had _some_ respect for the amount of energy an angle-grinder disk could store (and release) but I figured heavy pants and regular glasses were "safety" enough. Yeah, no. Time to dust off the full face shield and apron! Thank you *very* much for showing us just how badly maimed (or dead) you can get from a common tool. You have probably saved dozens of eyes, fingers and lives with this video!
If you guys do get another moror and try this again, you should get one of the metal kutzall carving discs. It's basically a metal half donut covered in spikes. I imagine it would take quite the motor to get it to shatter but I also imagine the damage would be catastrophic. When we got these into the shop the first time, we all took one look at them, and collectively decided that guards would immediately be put back on and never recovered again.
aww that cat so cute
12:32 Now you're in a pickle... can't be letting the smoke out of the wires or they don't work anymore.
Thanks guys for another great video!
In 50 years of welding Ive got hundreds of grinder cuts , but the Academy Award that I saw goes to : When I was in Technical School , there was a big surface grinder at the front of the machine shop , by the entrance window . A guy secured a steel block on the magnetic table , then started the 2 ft dia. grinder wheel up . He accidentally pushed the power down -feed button. The stone exploded on the block ,went thru the plate glass window , then thru the teachers Volvos front windsheild that was parked out front . Ive never seen anyone match that .
We need a "What is Anni your opinion" shirt ^^
Holy shit! Nothing else to say. Thank you for the Video!
I love how chill your cat is
You guy are my FAVORITE CZcamsrs. I really like this channel and the Hydraulic press channel. Thank you for posting these videos.
0:58 Nelli, not satisfied, goes for the chin! :-D
Watching from my hospital room. I was transferred from the trauma hospital where they did the two surgeries on my broken leg and collarbone to an inpatient rehabilitation hospital to get some physical therapy for the next week or so. That broken tripod leg looked a bit like my own broken leg.
Moi to you both, to Nelli, and to Leoko and Pepsi. 🐈🐱👋👍
Glad to hear to that you can at least watch some CZcams videos there while you are recovering from all that. We have had both minor operations for knees so we know that it isnt easy to get back on your feet after such an accident.
Hope that everything goes well and greetings from Anni, Pepsi and Leoko
Get well soon! At least you have CZcams ;)
Hope you're okay Don!
Thanks to all for your kind thoughts and words. I appreciate them.
I've never broken any bones or had any surgeries, but the physical therapists and doctor say I'm recovering quite nicely. Just might be in the inpatient rehabilitation hospital for a week or so to be back to being able to care for myself at home.
Not sure if this is my favorite or second favorite channel, anyway keep up the great work.
In a past life as a car mechanic I used to clean wheel bearings in solvent and then dry them by spinning them held between my fingers using an air nozzle. They make a cool sound, like those whistle-rings you can get. One day I decided to play with the sound, up and down, and the bearing *exploded*. The flying parts put multiple holes in the window next to me. Luckily nothing hit me - I was wearing absolutely no protection, not even glasses. Never spun them up more than a second or two after that. I'm amazed I survived some of the dumb things I did when I was younger, lol
A primitive fidget spinner before they were cool, mind you, this one probably didn't reduce your stress. 😂
2:17 “I think the cannon ruined it”. BTP 2019
From the book of common Finnish phrases....
Lauri, the motor didn't die just the carbon brushes got worn out! Angle grinders do the same when the carbon brushes get worn down.
@Paolo G I was not talking about the smoke, rather the sparks you see before the white smoke that's the brushes getting worn down to the bone.
@Paolo G Yes of course Paolo, what I meant was if he had stopped when it started sparking and replaced the brushes the router would have survived.
Another entertaining and Rocking Video!! Enjoyed this one!!
The colour grading is really nice on this episode, the footage looks gorgeous especially with the snow there
Try a stone from a bench grinder. I saw a picture where one broke apart and got stuck in someone's head.
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
@@Beyondthepress Varustelekasta hiekkasäkkejä ja lapiohommiin. 😄
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....
We need a TOS -- Theory Of Smoke. How is it that smoke runs so many different kinds of things -- electronics, automobiles, airplanes, etc. Why do somethings WORK when smoke comes out (as opposed to STOP working) -- for example smoke machines? Do smoke machines also run on smoke? If the smoke comes out of a smoke machine does it actually stop working or is still working? We need to figure out how to refill a broken machine with smoke to restore it. There's a lot of smoke theory that needs to be researched here. I may look into becoming a smoke scientist.
This video is a classic man that high-speed music mix was epic
Okay Lauri and Anni, I’ll put the guard back on my grinder, you’ve finally convinced me
The medium disk was so satisfying it called for a smoke 🚬
But a bit too much smoke came out 😆 . good video definently going to need a heavier motor to get the larger disk up to a properly destructive speed.
Im looking forward to this one.
Gdamn I WANT TO BE THERE FOR THESE WONDERFUL EXPERIMENTS!!!
Pritticoot. Now try the same with guard, please.
They don’t make grinder disk guards for routers lol.
This is actually no joke. When I was blacksmithing, I was using my angle grinder a lot to cut billets.
Nothing wakes you up more than a zirconium carbide disk shattering at 13,000 rpm, and a chunk the size of a paring knife slices through your leather glove and gouges a hole to the bone big enough to slide a quarter into, as tiny fragments ricochet off your safety goggles.
ALWAYS WEAR THE PPE FOR THE JOB, EVERYONE! I can't ever stress that enough.
If not for the glove and safety glasses, I might have lost a whole section of my thumb, and maybe my sight.
In the end it was worth it because I had created a 64" long 4" wide buster sword.1/4" thick. Oh my it was heavy and devastating. Cloud would be proud.
Awesome and like the new music on the slow motion.
3:29 Sweep the leg 🤕
Houston, we have a camera down. I repeat, camera down.
You help save lives! THANK YOU VERY MUCH!!!
My new favorite CZcams videos!