Exploding Grinder Discs Vs. Ballistic Gelatin | Deadly Shrapnel danger!

[@HebaruSan]

Nurse: Well, doctor? What is the patient's prognosis? Doctor: It hit his major bluud things on his leg, it's game over

[@Otnak]

This made me really laugh

[@bobemenchaca2621]

Hahahahaha priceless

[@Beyondthepress]

Doctor Lauri :D

[@The_Keeper]

"It is really dangerous and we have to deal with it. Now put the leg on the Hydraulic press plate..." 😁

[@roidroid]

This patient is soon to let the smoke out, there's nothin.... OH SHIT THE HIGHSPEED!

[@richardtodd6843]

Disk bits thrown at 450 km/h (280 mph), tripod leg ripped off, router burned, and a purring cat. This video has it all!!

[@danopticon]

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? 😕

[@richardtodd6843]

@@defunctuserchannel My spirals are much smoother, although his went 8 times as far.

[@pacificnorthwestnative5050]

Yes that was me that said I will put the guard back on my grinder, and I did. Thanks for the crazy demos!!

[@loganthesaint]

Pacific NW Native you must’ve never had one blow up or nail your hand.

[@pacificnorthwestnative5050]

@@loganthesaint once, but got lucky, and I had the wire wheel grab my shirt a couple times, that hurts!

[@volvo09]

@@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.

[@pacificnorthwestnative5050]

@@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..

[@carpediemarts705]

Simply Google "angle grinder accidents" images. Takes less time and even more convincing.

[@brianhogan433]

Was that nelli purring into the mic? Hahaha

[@WineScrounger]

Yes, she is adorable and plump and purry

[@curbotize]

@@WineScrounger yeah. SUCH a tubby. Looks like it likes the cat teats. Lol.

[@eoinkeane994]

Very fat cat

[@vapormissile]

eoin keane -- well-marbled

[@vapormissile]

maybe they can make a 3rd channel, "Can Nelli destroy it." oh noo

[@Ultimaximus]

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.

[@takokillah]

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

[@slyztercoreveanged3175]

sadly there stilll people who think grinder metal guard is a joke

[@chrisspearman202]

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.

[@LordBlee]

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.....

[@texasdeeslinglead2401]

That's the God's honest truth .

[@kyledevauld5524]

No matter what you are the softest thing in the room

[@battlepug3122]

Excellent advice

[@mihan2d]

Except for the drills. Drills are nice. Drills are friendly, at least if you use them responsibly. R-right?..

[@dreamxcviii3249]

@@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

[@mitchblackmore5230]

"I just going to use sandpaper from now on." Bwhahahahahahahahahahahahaha

[@RaExpIn]

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!

[@The_Keeper]

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.

[@videoaddict1178]

I thought much the same thing better the tripod than a real leg/person

[@BlackEpyon]

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!

[@threeMetreJim]

Sorry, not related to grinding discs, but just like the guy who blew his leg off shooting a lawnmower full of explosives.

[@dave4737]

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.

[@celestialemissary4934]

all electronics run on white smoke, when smoke comes out it can't run anymore

[@bassplaya69er]

you can get the kit to put the magic smoke back inside for sale on the internet.

[@flaviog.7628]

you high man?

[@ve2vfd]

Yup when the pixies release the magic white smoke you know your tool is truly björked.

[@esmphotographics]

That’s what called “technical smoke”.

[@restojon1]

The British car industry standardised electrical smoke and gave it a brand name. We call them Lucas Electrics.

[@slashmacleod]

Router smoke, don't breathe that!

[@mcknorth]

you can get internet sickness

[@pierreuntel1970]

All the packets has spilled out

[@antoineroquentin2297]

close your lungs

[@roidroid]

@@antoineroquentin2297 must put on a safety moustash

[@JustinAlexanderBell]

Will it blend?

[@ottarkraemer9001]

At 04:07 - Finnish swearing simulator 5000000. :D

[@FrankHarwald]

This is Finnish but not the End! B)

[@imbok]

Nelli is the sweetest cat!!

[@volvo09]

I was waiting to see him again. Adorable cat!

[@tinldw]

volvo09 her

[@volvo09]

@@tinldw I knew I was going to be wrong!.... I even had her written.

[@acousticpsychosis]

I have an orange cat that looks just like her...he's a licker too lol

[@zh84]

I clicked Like as soon as I saw her. About 1:45 you can even hear her purring! Bless her paddy paws.

[@amandawatson5931]

Moral of the story: Manufacturers recommendations are not there to mess you around. Stupid will hurt.

[@leexgx]

Shouldn't really be a recommendation it state its required that gard is used or risk of death

[@gnarkiller]

If you're gonna be dumb ya gotta be tough.

[@CrazyNerdInventor]

And the do not do list is an instruction manual for how to destroy something and yourself.

[@GodsGladiator]

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

[@RichardCranium321]

"Let's see what looks like if hits leg" Tripod- "next time YOU can hold the camera!" 😂

[@racer927]

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.

[@ElLenadorLA]

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.

[@The_Keeper]

That is definitely a "brown pants" moment for sure.

[@mrnmrn1]

You were extremely lucky not being hurt.

[@ElLenadorLA]

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.

[@randyeller8139]

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!

[@ReverendTed]

For comparison, I'd like to see a demonstration of a disk failure with the guard mounted. Will the guard _really_ improve survivability?

[@terminalpsychosis8022]

The slow motion is absolutely glorious. No face shield can protect you from such carnage. Killer experiments. Literally!

[@paulk3681]

Even the small bits are a femoral artery away from death

[@rootz420]

I think just the lb force of the blast would kill yeah before the bleeding to death. Look at how that gelatinous mass moves.

[@leexgx]

Death by cavitation

[@SPTSuperSprinter156]

Not femoral artery; blood things

[@brandonfoley7519]

@@rootz420 only if it hit your head

[@scottr939]

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

[@Saareem]

A primitive fidget spinner before they were cool, mind you, this one probably didn't reduce your stress. 😂

[@ulle500]

Seems like it was actually the small shrapnel that killed the tripod

[@davegrodzki]

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

[@greenemily109]

Fantastic! Love the clear ballistic stuff.

[@Beyondthepress]

Yep it was nice to have the new and nice block for this

[@norscanhordes]

Beautifully shot and edited. Thank you both!

[@Therealgigabyte]

IT released the magic smoke that powers all high technology!

[@demef758]

Came for the explosions, stayed for the humor. You two are better than the old Mythbusters crew.

[@RebbergbahnerEisenbahn]

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.

[@xenonram]

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.

[@RebbergbahnerEisenbahn]

@@xenonram Sure, for such a big grinding disk you would need a much larger motor.

[@Beyondthepress]

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

[@tube71000]

​@@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.

[@forthehorde86]

that was great! good call getting the new piece of gelatin, it really helped illustrate the amount of damage that can be done

[@jamesa7506]

"...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.

[@jasonharding9490]

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.

[@Sharklops]

The cat sounds a couple minutes in made my day

[@byronnightingale5550]

My favorite pair of crazy Finns that I can't help but like. Fantastic channel and terrific work.

[@skrevman]

1:47 The Mic is in the purrrrr-fect position. 😂😂😂👍

[@JessicaMarinaRushie]

Just have to say Anni is a great camera woman. She always gets great angles and is very stable.

[@GrowingAnswers]

makes me think twice about just using a Dremel tool without safety glasses.

[@tncorgi92]

I had a Dremel cutting disc fragment on me, it put a big chip in my safety glasses. Never work without them!

[@danpowell806]

Face shield in addition to glasses.

[@resetcoder]

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.

[@victortitov1740]

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...

[@alecjones4135]

@@victortitov1740 are you dead now?

[@samuelis6028]

Liked your video even before watching , you guys never disappoint 👌🏻

[@mortar4691]

"Mitä helvettiä toi kamera on kaatunut" "Voi vittu" 😂😂😂

[@andycreate25]

I'm not Finn but I know what does it mean And it made me I :D

[@WineScrounger]

*laughs in perkele*

[@andycreate25]

@@WineScrounger oi sata it's my favourite Finnish swear

[@zh84]

@@andycreate25 If you watch the Finnish film "Rare Exports" there's a fine "Voi vittu!" in there.

[@jokuvaan5175]

For the non Finnish speakers..... "What the hell that camera has fallen" "Oh fuck"

[@johnsmith7709]

You guy are my FAVORITE KZbinrs. I really like this channel and the Hydraulic press channel. Thank you for posting these videos.

[@SwapPartLLC]

Being a machinist, I'd expect you would make a new leg for the wounded tripod.

[@michaelparham1328]

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.

[@SwapPartLLC]

@@michaelparham1328 It looked like they used a different one where the broken one was.

[@davidmarshall2399]

Just pop it on the healing bench for a while.

[@hughaskew6550]

These grinder disc videos should be mandatory viewing for anyone in the construction industry.

[@thomasbarlow4223]

Now overspeed a wood cutting carbide tipped saw blade!

[@glasmannschaefer]

I second that :-)

[@danpowell806]

Even if you need to make a rotary disintegrator five million.

[@Nevir202]

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.

[@Glyxis.]

1:47 Awwww that Nelli's purr was sooo cute! She really likes to be in Anni's loving arms. :)

[@bubbajenkins123]

Nelli approves of the deadly upgrade of this device!

[@JR-kk6ce]

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.

[@michaelparham1328]

No comment on the fact that a piece absolutely went for the other tripod in the sedcond test.

[@jonw9119]

I love your guys' videos. Please never stop making them!

[@MrGazzw]

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.

[@priestofsyrinx6681]

This is actually really good content for a health and safety officer doing an OSHA class. Really shows the damage one of these things can do.

[@loganthesaint]

Let the record show I have never taken a guard off any of my tools, my fingers and limbs have thanked me many times.

[@donlitos]

This video is a classic man that high-speed music mix was epic

[@stevenwilliams9359]

Really cool, for a few seconds there that gel was acting like water to disperse all of that energy.

[@TheAttacker732]

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.

[@azy6868]

Hydrostatic shock is the effect that you are describing.

[@mrstan3997]

Very awesome folks. One of the best ones yet. Thanks for sharing. Kind regards and be safe

[@PPYTAO]

The snow is beautiful 😍

[@Saareem]

Sadly it's mostly gone already. 😐

[@TheNetsrac]

Thank you for another great video. You never disappoint me Love and hugs from Denmark

[@The_Keeper]

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.

[@Saareem]

Pretty close. She said "What the hell, the camera has fallen."

[@mountaindewdude76]

The medium disk explosion was terrifying! WOW! Awesome video! I love your channel! Be safe and keep up the good work!

[@notthatadam]

1:47 Epic purring.

[@bishbosh7728]

You two have the best reactions so excited about the utter destruction of things. Be safe with your future videos.

[@pzi__]

"MItä helvettiä toi kamera on kaatunu?" "Voi vittu se on katkennu!" 🤣

[@GHOOGLEMALE]

haha " I am going to sell off my grinders and use sandpaper" killed me

[@scuzzjumper]

All deadly. Little disc killed tripod, medium killed gel and the large disc killed the router!

[@liamsteele4982]

I love how chill your cat is

[@DOCTOR_SONG]

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!!!

[@tim8938]

Not sure if this is my favorite or second favorite channel, anyway keep up the great work.

[@Jhammie1776]

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...

[@TheWeirdestOfBugs]

YAY! Nelli is back! Cutest Finnish cat on KZbin (with Leo and Leoko in a close second!)

[@pankothompson5903]

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

[@DOCTOR_SONG]

Yes squish the dead router . its proper and respectful cerimony for the casualties of experimental science events.

[@DOCTOR_SONG]

This router has let all its smoke out and must be dealt with ........

[@fridje]

The colour grading is really nice on this episode, the footage looks gorgeous especially with the snow there

[@jamisonw.327]

1:24 Nelli claws vs ballistic gelatin

[@hallofo8107]

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!

[@JoePeakwutz]

Holy shit! Nothing else to say. Thank you for the Video!

[@forresthampton1135]

My new favorite KZbin videos!

[@muh1h1]

We need a "What is Anni your opinion" shirt ^^

[@reczy]

Within one minute of this video I fell in love with that cat.

[@kingofDF]

Sounds like you guys are fishing for a tripod sponsor 😉

[@hilltop4847]

Any video you have to do in a concrete bunker is a good video.

[@roidroid]

I keep wanting to make an _"in Soviet Russia..."_ joke about 🐈Nelli's licking, but it's too bad haha 😚

[@42Omicron]

Okay Lauri and Anni, I’ll put the guard back on my grinder, you’ve finally convinced me

[@tnbspotter5360]

Try a stone from a bench grinder. I saw a picture where one broke apart and got stuck in someone's head.

[@micha_el_]

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...

[@Beyondthepress]

@@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

[@Saareem]

@@Beyondthepress Varustelekasta hiekkasäkkejä ja lapiohommiin. 😄

[@brianreddeman951]

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....

[@matthewbeddow3278]

The magic smoke escaped , game over. Time to get a new Router. Thanks for the videos i really enjoy.

[@yasir5422]

aww that cat so cute

[@chucklehead2000]

I couldn't keep my eyes off Nellie. What a sweetheart!

[@WoodworkerDon]

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. 🐈🐱👋👍

[@Beyondthepress]

Glad to hear to that you can at least watch some KZbin 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

[@formatique_arschloch]

Get well soon! At least you have KZbin ;)

[@killdeer]

Hope you're okay Don!

[@WoodworkerDon]

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.

[@AntonyScerri]

Glad it was just the limb of your tripod that got chopped. You had some very clean looking ballistic gel, very clear and nicely showed all that damage, crazy. So how many people are going to stop using grinders having watched this. You might want to put a lid over these if that thing tips over those discs will fly! Lauri the tool destroyer, you should now challenge the tool makers for who has the toughest equipment

[@kingginger3335]

That cat is hilarious! It won't stop licking Annies glove. I apologize if I spelled that incorrectly. I'm a dumb American lol

[@tinldw]

King Ginger it's spelled "Anni's"

[@yevrahhipstar3902]

As a long-time user of grinders of al shapes and sizes, this has been the best Pressman video yet! About wheel guards; seems to be an American thing to not use them, which is nuts. Even a momentary contact causes horrible wounds that take ages to heal..

[@axtrifonov]

Pritticoot. Now try the same with guard, please.

[@Nevir202]

They don’t make grinder disk guards for routers lol.

[@tetonclmbr6074]

Another entertaining and Rocking Video!! Enjoyed this one!!

[@darioinfini]

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.

[@thomasyarb2520]

awesome results on the medium disk. The tripod leg was funny and the smoke was funny. I laugh pretty hard when they realized the tripod was damaged.

[@jimsvideos7201]

0:58 Nelli, not satisfied, goes for the chin! :-D

[@jimsagubigula7337]

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.

[@Ede74]

Nelli has so much love to give.. :)

[@chrisbarker270]

Awesome and like the new music on the slow motion.

[@niilovaananen3215]

Lauri i think you need some glasses after not noticing the broken tripod

[@kenvik6192]

Till the smoke come out, love you guy's videos