What Would Happen If You Swiped The Waterjet?
Vložit
- čas přidán 8. 07. 2022
- What does a 60,000 psi waterjet do to your hand? We used ballistic gel dummy hands to test what happens if you put your hand in the waterjet stream. We also put them in the hydraulic press and on the saw stop table saw.
Send us something to cut!
PO Box 540790 North Salt Lake UT 84054
Full Saw Stop Video By Johnathan Katz-Moses • How Safe is a Sawstop ...
🔪🔪 waterjetknives.com 🗡️🗡️
Are you or anyone you know going through a divorce? If so, i'm sorry to hear about it, but we'd love to help divide the assets.
Music: David Cutter Music - www.davidcuttermusic.com
Don’t steal our videos, if you’d like to use our video for something please contact us via email. - Věda a technologie
I'm naturally inclined to make peace with my enemies, but I could never shake hands with a hydraulic jet.
Ha!
wise habibi words
This is a top tier comment
🤝
How does one get a water jet as an enemy?
I've accidentally run 12 thousand psi across my steel toe cap boots, luckily it went over the steel toe, it was a quick pass and cut my boot open from side to side through to the steel. A lesson NEVER forgot and i still cringe years later at how bad that could have been. (edited for the stupid on 12k psi or 12.000)
Zoinks 😳
How did you even manage to make that mistake???
@@John-Doe-Yo industrial cleaning, jetting floors and machinery. And young and stupid at the time :D
@@cornovii3012 oh yikes
@@WaterjetChannel If you get this message could you run this for me and see how bad it would have been for me if i missed my steel toe cap, would the leather have saved me much. I was wearing the beige one piece steel toe cap Rigure boots with the 2 loops at the top fur lined. I was running a 6 cylinder diesel pump on a dump gun with a pencil jet at 12,000 psi. I hope you do get this :)
as a physician id like to add, waterjet injuries even pressure washer are a very serious emergency and treated the same as high velocity firearm injuries. they cause extensive tissue damage even if the outside doesnt look very big, due to the high pressure diverting force laterally as it encounters resistance and continues to damage tissue as it separates flesh from bone. thank you for making a high quality interesting video
Injection injury. Looks harmless, but do nothing and die
Hey thanks for that, I learned something new today
You could probably make a poor firearm out of this
Back before the woke leftist crybabies took over us real American MEN used water jets to administer saline solution for our contact lenses
@@timohara7717this would probably be a very dangerous firearm if someone could make it possible to easily aim
Worked with a flow water jet for almost 14 years now, never gets old seeing the power of water and sand at work cutting through anything in it's path! Never forget rule number one, the machine will win the fight every time.
not if i have anything to say, i would beat it's ass
"This machine doesn't know the difference between flesh and metal, nor does it care"
For sure
@@ProtoV33MK1 The Machine can't know nor care. It's not a sentient being.
@@BangMaster96 that's literally the point
A guy where I work once tried to clean a rotary airlock out while it was running. He said he felt a slight pinch, pulled his hand out and was missing 3 fingers. Needless to say, he was the reason for the airlock safety procedure video.
Holy shit
Damn, it cut off his fingers with so much power he didnt feel it.
Man I never knew waterjets could be so dangerous.
I guess you learn something new every day.
@@erykaldo2l270 Yeah if you sever the nerve cleanly you don't feel it. I got a very nasty injury (unrelated to work tools) and it cut so cleanly to the bone I never felt a single thing even though my hand was pouring out blood.
Why would you try to clean anything labeled “rotary” while it’s running?
@Oni If the finger came completely off? I mean, people have successfully gotten extremities reattached after even violent amputations where there wasn't a clean break. It just depends on several factors.
Thank you for curing my primal urge to swipe my hand through a water jet
x2
x3
×4
x5
x6
This takes me back to when we first learned woodworking in middle school. Our teacher was extremely strict about the safety rules and to demonstrate how important it was for us to follow them he took a thick stick and showed how the bandsaw was able to cut through it like a hot knife through butter. Of course we weren’t allowed to use it but it definitely made us take all of the other rules seriously. Especially since he would also threaten to show real life pictures of injuries that happened as a result of people being careless. Needless to say he was a very good teacher.
We used all the saws in middle school, but we had to get a hundred on the test for it
@@zenaxia8063 We were using metal lathes from the 50's and I had a lot of respect for those machines, that's for sure.
Safety first
Here’s something that can change your way of life or thinking. This is the most important thing you will hear/read today.
If you’ve told one lie, stolen anything, or lusted (which is adultery of the heart), you’ll be found guilty on Judgment Day and end up in Hell. But there’s good news: Though we broke God’s Law, Jesus, the prophesied Messiah, perfectly kept the Law, fulfilling all righteousness. He paid the fine for sinners ( that we could never pay ) by suffering and dying on the cross-absorbing the wrath of God that we deserve. “For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, not of works, lest anyone should boast.” Then Jesus rose from the dead and was seen by hundreds of eyewitnesses. Today, repent and trust Jesus; God will grant you forgiveness and the gift of eternal life. God bless
@@zenaxia8063 Here’s something that can change your way of life or thinking. This is the most important thing you will hear/read today.
If you’ve told one lie, stolen anything, or lusted (which is adultery of the heart), you’ll be found guilty on Judgment Day and end up in Hell. But there’s good news: Though we broke God’s Law, Jesus, the prophesied Messiah, perfectly kept the Law, fulfilling all righteousness. He paid the fine for sinners ( that we could never pay ) by suffering and dying on the cross-absorbing the wrath of God that we deserve. “For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, not of works, lest anyone should boast.” Then Jesus rose from the dead and was seen by hundreds of eyewitnesses. Today, repent and trust Jesus; God will grant you forgiveness and the gift of eternal life. God bless God bless ❤❤
I don't deal with waterjets, but this highlights just how fragile we are. No matter how "tough" we try to become we're still flesh and blood. Scary.
damn, thats deep tho
On the other hand, literally everything is fragile to this water jet. It can cut trough diamonds without much trouble so you really just have to give it enough time
“What do you think happens if I run my hands through the water?”
“It’s a 60k psi water jet. It can slice metal.”
“Okay, but what if I, like, moved really fast?”
I've never been so grossed out by ballistics gel body parts getting wrecked but that first hand was hard to watch 😂
I've cut my own finger to the bone with an angle grinder and was barely fazed, yet this is gagging me...
Why’d they have to make it look so real?! 🤮
@@nickflesher7608 So people take safety seriously, clear ballistics gel doesn't give you the shock factor realistic ones do.
Fr i kept going "ohhh" and "yuck" lmao
That table saw! 😳😬
I have actually had a water jet injury, back in 2008 or so. The beam started over top of my hand, while cutting 2.5" thick field stone, and turned the inner part of my thumb into mist. Lots of blood, lots of pain. Luckily, I didn't lose my thumb, but it was close. Took a long time to heal, and it has not been the same since. Permanent nerve damage, and some loss of mobility in my thumb. Let this be a PSA to anyone who uses a water jet
Bless you man
what is a water jet for? cutting stone??
@@Ch4rlz_ThA_Princ3 cutting just about anything you want. Stone, glass, metals, plastics
@@1986krazy you forgot to list thumbs👍
@@chriscooper1449 💀
Having watched this and also having a water jet accident myself. This is definitely accurate. Blessed to still have my hand and finger.
Singular finger?
@Hrushikesh Naik yes. I first caught the stream with my wrist. This was all under the water. When I felt it on my wrist, I yanked away and caught my middle finger on the stream. That's where my injury occurred. I only have a slight scar on my wrist, thank God.
@@brendonkline596 did you lose your middle finger? 🖕
@@HrushikeshNaik1650763n73 Yikes!
Is the holding your hand still idea good or should you rip it outta there
Props to the person who provided their hand for the testing.
He was actually used in two tests.
The first was to see if a water jet could go through a wrist.
The fact that the water was able to grip anything is absolutely terrifying
I guess it is weird to think about, but that’s how it cuts. Pressure + friction.
I don’t think the water gripped it. I would say the metal bracket the hand was attached to got caught on the hole in the wood
Really think it was more the downward pressure against the wood "table" they had going there
Final Destination
you’re forgetting about the abrasives
Not sure how you could test this, but something I was taught when learning to use a water jet is that getting your hand/fingers cut off is the least of your worries if the jet hit you. I was told the pressure was so strong that it would backflow through your arteries and push garnet into your heart.
Had a coworker take 20k to the arm and while that exactly didn't happen there was so much water under his skin the paramedics thought his arm was broken. He had to wear a type of pump on his arm too for a couple months if I remember right to help extract water from his arm. It was pretty gross to say the least.
You'd have to go into a decompression chamber, it's treated as a gunshot wound!!
And you'll become iron man
Sounds like a plausibly fucked up way to go. I'll try to avoid it
@@jordanstatler4661 Injection injury?
Reminded of a story my mom told me about her work in an armament factory during the war. She was operating a drill press with a small drill and got her finger under the drill. She had the wherewithal to hold her hand steady until the drill went completely through and then came back out. I don't know how she did that but her calm reaction saved her from losing her finger.
😮😮😮......How....just how! That is unbelievable! But yes, she is fortunate
6:31 looks like a sick album cover
A guy I worked with had a high pressure sprayer loaded with tri-chlor to clean it out. He squeezed the trigger and couldn’t see anything, so he ran one finger in front of the nozzle to check. It was spraying a stream so fine and hard that it pierced his finger to the bone and filled his hand internally with tri-Chlor. It was a horrific mess and there were surgical amputations.
😧
Damn
🤢🤢🤢🤢🤢
that's why you aim it at the ground instead of rubbing the nozzle... yeesh
@@BigHatLoganGaming
Sorry for the comparison, but it’s understood by most:
best to treat tools like a handgun… never point it at anything that you’re not intending to blast.
40 years with machinists, apprentices, and operators is not for the faint of heart ⚡️
I’ve seen assemblers hold a workpiece between their legs and use a flat blade screwdriver aimed directly at groin …. One slip and it’d be horrible.
People thought I was an alarmist when I comforted them for their own safety. A few were offended that I was being ridiculously fearful. I didn’t care… I forced them to change for just that moment.
A video that shows the main point instantly? Then repeats the main point with 50 equally interesting variations?.. my man.. you are a legend! Thank you for the content!
I was like "I'm slightly intrigued, but this is a long video so I'll just open it up, skip to the 15 seconds where it happens, watch that and then move on." Only to realize that the whole video was you guys doing the thing. Well done.
no "stick around to the end to find out what happens" BS.
Here’s something that can change your way of life or thinking. This is the most important thing you will hear/read today.
If you’ve told one lie, stolen anything, or lusted (which is adultery of the heart), you’ll be found guilty on Judgment Day and end up in Hell. But there’s good news: Though we broke God’s Law, Jesus, the prophesied Messiah, perfectly kept the Law, fulfilling all righteousness. He paid the fine for sinners ( that we could never pay ) by suffering and dying on the cross-absorbing the wrath of God that we deserve. “For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, not of works, lest anyone should boast.” Then Jesus rose from the dead and was seen by hundreds of eyewitnesses. Today, repent and trust Jesus; God will grant you forgiveness and the gift of eternal life. God bless ❤❤😊!!!
@@jrmartinez1354judgement day? Oh hell yeah terminators come on me
@@jrmartinez1354Man I haven't done any bad thing but I'd rather go to hell than have people in heaven preach this shmuck to me all day 😂
We berate moths for flying into the flame, but can't control our urge to shake hands with the forbidden tap
Love how he calls it a "primal urge". Like weve had this kind of technology for thousands of years
This video is compositionally perfect - doesn’t drag its feet with a lot of stupid build-up, gets right to the action without melodrama… because the results are dramatic enough.
Nicely done. 🤙🏼
Dramatic is an understatement. I had constipation before watching this video but thankfully the video cured that quite well.
nice choice of emoji you got going there xD very fitting for the video
bro a movie critic, bro writing a college paper, bro is a philosopher (u right tho no shade)
@@stubbs7861 everything but the college thing - high school dropout, this one. 🙃
this video is compositionally a wreck. drags its feet with a ton of buildup. 1 minute video turned into 10. horrible
This is critical information I definitely need... I've never even seen a waterjet, but now I know what to expect if I meet a waterjet in the wild
i also have had not a single experience with a water jet in my entire life but im glad we are now prepared
We must be soulmates, there is almost zero chances ill ever see a waterjet, i work in a hospital, but my curiosity got my in trouble and hurt a lot of times lol
i’m scared just in case i do even though i know i won’t
The CZcams algorithm has brought us together
Thank for giving the absolutely delightful mental image of a man going for a walk in the woods when suddenly, he freezes and falls into a defensive stance, looking toward something behind the camera, clearly on high alert. The camera turns to reveal…a waterjet. Sitting there. Ominously.
20 years as a machinist... waterjets were definitely the coolest machines I've worked on.
I read that as "20 years as a masochist"
..and I was like, oh no where is he gonna go with this???
😂
@@kinotsu3017 lol
@@kinotsu3017 same.
i think the sawstop works somehow detecting human finger by electric current changes when the saw is being touched, so it would not detect ballistic gel at all nor trigger the safety brakes
This is surprisingly nightmare-fuel for someone who is familiar with machine accident gore.
These machines are way too dangerous …
i barely know water jets i only know pool ones and hottub ones
Not me who just had my arm crushed in a punch and plasma cutter machine😂
@@huntersutter8207 jesus
@@treystephens6166
Yea. No surprise there.
Still necessary for work, though
Something this doesn't show is how bad high pressure injures actually are. I don't know their technical name but when you get high pressure air or liquid injected into you it does tons of damage, much more than just what the water cuts.
Hydraulic injection injury. Nasty stuff
When there’s that much water going onto and subsequently into your hand, the water has to go somewhere. So it floods your blood vessels as well as carves channels through your flesh.
It's called a cavitation wound.
My middle school shop teacher loved to scare us with stories of air compressor accidents. Slicing the arms skin up and down to drain the oil.
Pushing air from a syringe into a specific artery/vein (i forgot which one it was) can and will cause a heart attack 😀
I came into this video expecting the first 75% to be filler footage and the last 25% finally showing the experiment, but I was pleasantly surprised to see y'all got into the meat of it all super quick. You've earned my like and subscribe for doing it up right and I look forward to seeing more from this channel. 👏👏👏
Same I started to skip through to find the part where they actually tested it but they got right to the point.
Jesus Christ loves you all please repent and forgive
@@littlesam6280 why is this here
The water got into the meat of it super quick too 💀
@@bandit3019 literally had this comment in my mind as soon as I read the og comment 😂😂
The scary part about the water jet is the pressure in an actual hand would cause water to flow up and down the sides of the bone, through vessels and so forth. So your getting a lot more of your hand, or more, injured than just where it’s hitting.
Hydraulic pressure trauma, cringe, that’s the big oof.
Fuck, didn't even think about that... sounds like a whole hand amputation due to widespread necrosis
I was surprised they didn't talk about this, especially since a lot have an abrasive mixed in. A company I used to work at had one and a guy told me that a guy had to get have most of his arm amputated because the abrasive just tore everything up inside from his finger (where it actually made contact) to his bicep. Scared the shit out of me and I learned never to mess around with them.
Christ almighty the idea of having fucking garnet abrasive inside your blood vessels is horrific. Is a mineral embolism even a thing that can happen?
@@thatswhatsgood24 What the hell from a simple touch with his finger it instantly shot the pressure all the way up to his bicep!? That's absolutely insane, I wasn't too scared before, whatever, pretty bad hand trauma, but as long as your bones are relatively in tact you're fine. But I never even considered pressure blasting up your entire arm and destroying all the delicate stuff inside, Jesus
There was a guy where I use to work that ripped the skin off his hand with a water excavator truck. He was going to remove the clamps on the vacuum and another employee didn't see him and went to hose down the pipes and swiped his hand. It went all the way to the bone, will never forget that.
A video that goes straight to the main point, with several iterations for fans. You sir are a legend.
Work in a shop a lot, thought I had a pretty healthy respect for the danger but it turns out that after watching this video it can actually get a heck of a lot healthier.
You and me both man
@@AGMertzy You him and me both man
@@bilalbaig8586 you, him, the other guy, and me bro
@@toastyapplezzz3613 you, him, the other two fellas, and me bro
You, him, the other three dude and me both mate
This reminded me super hard of an incident my best friend once witnessed. He worked at an automotive factory for a few months and once during his shift a coworker of him had an accident with a forklift.
While checking the hydraulics he saw a part being stuck and decided to pull it out. When the part came loose he damaged a hose for hydrualic fluid that burst open and cut him straight across the face. He got permanently blinded and needed several surgeries and other medical treatments to survive because all his wounds were filled with hydraulic fluid.
That's why you should never try to fix machinery if you're not specifically tasked and taught to do so.
Hydraulic fluid the worst. It’ll lead to amputations. Horrific
I think most manufacturing companies are now lowering operating pressures on all hydraulic equipment to below 3,000psi for this reason. In the event a hose is damaged, the pressure is lower AND there's substantially less fluid that'll escape as the pressure drops.
...regardless, some hydraulic fluids can permeate your skin even when it's not under pressure and can cause all kinds of health problems. It's much more dangerous than most people would think.
What they use as hydraulic fluid one chemical.
Heard a story where the hydraulic part of the forklift got stuck in the “up” position with a pod like generator on the forklift , kid (early 20s) went under it to loosen it up (think he removed one of the hydraulic wires) and the generator fell and squashed the poor guy
Are you from germany? Did this happen there?
The waterjet would be a great idea for the next Saw movie. XD
The first hand tests were horrifying... I wonder what is the lethal range of these waterjet cutters though.
Pressure pre square inch divided by distance?
Not too far probably. It has to not cut into the table below
im guessing that is the point of the water table, since all those micro-collisions with an incompressible material would slow it down enough@@Gigachad-mc5qz
A buddy of mine had hydraulic fluid get forced into his hand under high pressure, they had to slice his finger open to the bone and leave it open for a few days while cleaning it because the fluid blew it up like a balloon, the injection site was at the base of his finger but it traveled around, he’s still got a really nasty scar and not much mobility in his finger
Yeah them pressure injuries are nasty.
That sucks man.
Injection injury?
@@bensoncheung2801 Its where the fluid or air gets pushed so hard into your hand/arm/leg that it must find a way to go, opening up pockets all throughout tissue around the area hit with high pressure. Like a balloon in your muscles but explosive power, air or fluid can go from your hand injury all the way up your arms inside the skin with that much pressure.
Yup!!!! Air will do it to !!!
The idea that the jet can actually hold your hand down and force you to rip it off is absolutely terrifying
Saw trap
💀
I mean, you can just leave it there until someone turns it off. Unless someone is playing a really sick jigsaw level kind of shit with you lol
The idea of literally anyone and anything holding my hand is comforting
@@UwOtt bruh
I would hold your hand
"Whats sharpest thing on earth" "water"
As someone with a deep fear of stabs and cuts, my hands were completely numb watching this whole video.
When I was a kid I was pressure washing some stuff for my grandparents and got a lot of mud on my legs. I held the nozzle about 2 feet away from the mud to spray it, but I tripped and wound up blowing about 8 inches of skin off my leg.
Great experience!
Yeah that does sound pretty great experience
God, that sounds awful. How long did it take to recover from that??
@@isaac10231 You don't
@@n3gi_ of course u don't recover what do you think humans are ? We're not mutants with a healing factor
@@clipclopcock true, he is still bleeding from the wound to this day
If I managed a workshop with a water jet, this would be the apprentice’s “day one” video.
👍
Definitely
Great content. Good-natured and entertaining while still being informative!
These people out here answering life's questions!
Another thing to consider is that water invades the tissue that it doesn't remove as well. Those injuries often end up being more catastrophic than the laceration or amputation.
Ya, degloving is absolutely horrific. I accidentally came across some pictures of degloving injuries and it’s not something I’ll ever forget the sight of. I definitely do not recommend looking them up if you have a weak stomach. It can happen with any high pressure fluid, whether it’s air, water, oil, or anything else. Absolutely horrifying stuff.
Could you elaborate? I got really invested!
@@CrippledMerc those were the worst seconds of my life after searching degloving
@@Zorathefox I warned you
@@Zorathefox i really want to search it but I also really don't
Heard a story from my school administator that he was told by one of the HVAC teachers. When he was working on a high pressure boiler in the navy, if they had a pin hole in the boiler and you swiped your hand around it to find it, you would slice off any fingers in its path with the high pressure air coming out.
I work with a guy who worked for the electric utility for 30 years. The guys who worked the power plants were taugh to walk with a broom held out during high output situations to detect steam leaks. This because of two guys who were cut clean in half because of said leaks. One of the plants he worked in actually cordoned off parts of the plant during very high demand unless there was a failure that had to be fixed immediately.
jesus
@@Recreationaltrespasser I've heard something similar on submarines, that they use a broom stick to check for high pressure leaks. The reasoning is it's better to cut the stick in half, rather than your fingers.
When I was in a railroad camp operating a steam engine, the stories of much higher-pressure steam going wrong were terrifying. It is not something to be messed with!
@@Recreationaltrespasser my dad was a nuclear engineer in the navy and he was taught something similar
I love that you guys don't bullsh¡+ around for ½ the watch time trying to keep us hooked. I know that CZcams channels have to worry about engagement, mostly due to ad revenue, but still, I don't like feeling like I'm being worked.
You have a new subscriber
.
Clicked on this video completely out of random and ur guys sense of humor is so weird and like unpredictable in the best way possible I love it so much u guys had me crackin up the whole video 😂
Our company sells waterjets…always assumed your fingers would be cut clean off. This is almost more terrifying
No, whats more terrifying is the injection injuries that would come after.
I guess water takes the path of least resistance. In this case it's right through all your soft tissues.
@@mesk412 perfect assumption
I used to crate FLOW waterjets in Kent Washington
@@JJAB91 wtf is an injection injury?
That actually did significantly more damage than I thought
In actuality it would be much worse because of injection injury and all of the granite that would end up under your skin
I mean it cuts metal, of course it’s gonna destroy a human hand
@@thor5446 I thought there'd be something similar to leidenfrost effect but nope there's no mitigating metal cutting water
what a low-effort generic comment. idiot who pretends he didn't know a metal saw/hydraulic press would destroy a human hand.
This is the channel that I needed. Thank you, Waterjet Channel
"At least it's blinking red, showing us that something bad has happened"
LOL
Fun fact, a cutting torch burns at several thousand degrees. Its literally hotter than the surface of the sun. Yet you can pass your hand through the flame if you are fast and it wont burn you. You might singe some hairs but thats about it. If you rub some water on your hand even if you dry it, then do it, the hairs are even wet enough they don't singe. Again, if you go fast. I'm not even talking about super fast like swinging a baseball bat fast. More like tossing a softball fast. I'm not suggesting anyone do this, just saying I have done it many times and not been burned.
The big difference is that heat has to actually transfer and skin makes a really good insulator. The water jet is filled with abrasive particles. Its more like a tiny non stop shotgun.
Still doesn't mean we can be anywhere near the sun tho 😂
@@KringleKruncherton Right, because we can't pass by that close to the sun as fast as we can pass our hand in front of the torch. Plus the torch isn't putting out lethal amounts of radiation like the sun.
its not that unlike the old video of the guy slapping a stream of molten metal. the sweat from the heat and the speed leaves him basically unharmed. maybe a little warmer than comfort though
@@PoePoePoed I'm pretty sure you still can't go to the sun even if you are sweaty from the heat lol.
@@KringleKruncherton Damn.
never heard of a water jet before but now i have a horrible fear of them. 10/10
same
Y'all must be young and or never worked in some sketchy factory lol
@@TheRobotGorilla worked in retail exclusively for the past 10 years. not a lot of water jets around
@@TheRobotGorilla That’s not a normal thing
@@corvus8638 I wouldn’t believe you’re a normal thing either
Kind of insane that the saw cut through that hand so cleanly yet there was still enough force, multiplied even by the time amount of friction, to launch the remains that far.
2:56 So don't mess with the water jet at kids home xD are they fkin high or something
For anyone wanting to skip all the bullcrap in these kind of videos, the actual testing starts at 0:00
These guys are classy
no
Godamn your right
0:50 actually
@@grimmisascorchmain9486 0:57 actually
@@grimmisascorchmain9486 🤓
As a former Field Service Engineer for Flow International that makes that Mach 200 you have there, I can say with 100% certainty that the waterjet is the most dangerous machines in the shop. This kind of accident is what I feared the most for what it could do to you.
Water jet might be the easiest to hurt yourself on, but it's still not as scary as a lathe.
@@kylewarfel9270 Agree. After hearing a lot of stories from my teachers and also after I saw the infamous Russian lathe accident. I keep my distance from those machines. 1 bad move and you are in pieces.
Lathe is my favorite machine to run. You just have to treat it with an immense amount of respect. As an amputee myself I can assure you, the greatest safety device is the one between your ears.
2:15 you see that, that's bad but here's the thing...that hand is fake which means there's no blood...let that imagine sink in.
I’m not even into this kind of work or content, but y’all are funny as hell!! Great vid lol
I am happy that professionals handle this work, just looking at it made me feel sick, its important work, thanks for doing it well
The reason the Sawstop didn't activate is because the capacitance of the fake hand wasn't enough to set it off. The reason it works on a touch screen is because you were holding it. If you guys do another test, you can test whether the blade will activate before you turn the saw on by looking at the lights while touching the blade. A capacitor on the dummy hand may be enough to set off the sawstop.
That's an idea.
Yep, came here to say the exact same thing
Saw Stop does not work on capacitance. It is triggered by resistance to ground (like a ground fault interrupter in your houses fuse box) . And that is the issue. Even if the balistic gel would have a resistance in the area of human body, it would require a contact wo ground. So if you would have added a wire to ground the hand (or to saw into it while laying on the saw table and havin contact to the surface, the saw stop might have been triggered.
@@thorsten_w Uhhh do you have a source for that? Because some quick research tells me ground doesn't matter - nor should it, the most obvious reason among many being that insulating shoes exist and are almost always worn in a shop.
Sticking a capacitor on an electrically ungrounded conductive object does not change its capacitance any more than sticking a jelly bean on it would. All it needs is more surface area. The geometry of the surface matters, but I doubt that anybody cares about details anyway.
It's going to be difficult, but after watching this I'll try to never take a nap in the trash compactor again. It's just so dark and comfortable.
Was the nap Good?
Dude you’re gonna end up permanently napping if you keep that up
Wait there was recently news of people died in trash compactor recently, as their body got compacted
@@raifikarj6698 coincidence? I think not.
The damage was FAAAAAAAR less than I imagined it would be. To me this is a comforting video rather than a scary one.
Thanks for the video, I usually take naps under the psi waterjet because is so comfy, I guess I will have to stop doing that now
I like how you get pretty much straight to the point of the video without wasting time. Good anti-clickbait practices.
It's good because this just get straight to point, but IDK why its bores me
The algorithm will reward them for it
Yep 👍
@@user-sk3nf2vv4p maybe try watching some other type of content then?
agreed, saves us sliding past all the bro-fun
The saw stop works by running a small current through you. A falling hand wouldn't be detected, because the current has to go from the blade to ground to trip.
Now if you had a grounded wire attached to the hand, it should stop immediately. (no guarantees though... Nothing is perfect)
Just make sure the wire doesn't wrap around the saw! That could probably do more damage than the saw stop does!
Yep - it worked on the touch screen because they were holding the hand, allowing the current to go through the g. For the saw stop to work they’d have to also be holding it or maybe attach it to a ground wire that they held. That’s why in the hot dog tests they are always touching the hot dog
It works by measuring for a capacitance change every 6ms if the object it touches isn't large enough, or conductive enough, it won't trigger. Suspect the hand is not human conductivity or capacitance.
That's what I thought, the ballistics gel wasn't grounded so the electric charge has no reason to transfer to the gel hand. So there was no change on voltage, and no reason to trigger the sawstop.
@@SpaceCircIes Saw stop works on capacitance, not grounding.
It uses low voltage 167Hz AC to detect changes in capacitance. If the gel didn't have enough conductivity or capacitance, it wouldn't trigger it. Hence nails don't trigger a saw stop and hence green wood that's touching the table that is grounded doesn't trigger it.
@@markp8295 I have limited knowledge on that subject. thank you for explaining it. just to try and understand, the sawstop works because the human body can accept the charge and store it like a capacitor?
New fear unlocked: hydrophobia
Randomly clicked on your video, and was pumped to see your shirt! Go Utes 🙌🏻. Awesome video
Yes thank you. I always have this urge when I see water jets. Can't believe you guys made a video about it.
Great minds think alike
I felt a sympathetic pain response while watching this. This is a valuable service you guys are providing. Also kind of entertaining, to be honest.
I cringed with nearly every one, especially when they were drilling holes with the water jet. Horrific stuff.
Me too. I literally felt that. That synthetic hand tricked my brain and I felt the poor souls plight. I physically cringed and turned away.
Same I was holding my hand as it happened lol
I'm sitting here fuckin squirmin
Got them Hodgetwins fingers.
Very entertaining and fun to watch. I will keep my hands out of the way for sure now. LOL Thanks for posting this.
Surprising to see how much it cuts even whitout abrasive. This this is not to be messed with :')
If any of you have a stomach for it, look up "hydraulic injection injury" to understand why even if it just looked like a small through hole, you may still lose your whole hand or possibly more.
Yes, the treatment is to essentially flay the limb and clean out stuff.
its kind of bad but have you seen a picture of someone who got squished by a truck
@@Shrek_Has_Covid19 that's irrelevant because this conversation isn't about comparing gorey accidents
I would like to see this same video but testing out the effectiveness of various levels of protective gear: gloves, welder’s gloves, falconer’s gloves, a metal gauntlet, maybe even a bullet proof vest
I would love to see this, especially for a few reasons.
1. To see how effective it would protect you
2. To teach people to use protective gear ALL the time when working with dangerous tools and machines.
as someone who grew up on a farm : protective gear is important, even in the most mundane of tasks.
i wouldn’t even want to hoe tobacco without a set of sturdy gloves, let alone handle any machinery.
You mean you’d wear bullet proof vest when you use water jet ? Lmao
Watch it obliterate all protective gear and now water jets are the ultimate weapon. War Crimes initiated.
@@pinkcheng8188 What if the water, hypothetically, jet ricocheted while, somehow, keeping 99% of its initial velocity, turning its new trajectory, conveniently, on a pathway straight towards, for no apparent reason of course, your heart? I surely would want to be wearing some fort of torso protection then.
edit: 'fort' should be form but quite frankly, wearing a fortress around your person is likely very effective.
Man, the waterjets are deadly! No joke...
This is a pretty good safety demo of worst case scenarios if safety is a word that the entire shop is unaware of.
I was curious once and tried to spray my hand with a pressure washer. It was set to the lowest setting first and I gradually increased it until my hand felt like it was being scraped by several forks. When I put my hand away, the actual pressure still wasn’t enough to wash the grime off the floor tiles. So at that point I knew that at max power, pressure washers can be really dangerous. Couldn’t even imagine what a water jet would do until I watched this video
In fairness... It really depends what kind of grim you're trying to clean with a pressure washer determines how well it'll clean. Even with my 3,000 psi pressure washer, sometimes it's easier to get a light sponge and rub the dirty away whereas the 0 degree nozzle won't even cut it.
It can also put air bubbles into your bloodstream, which can be fatal. Similar to the bends when deep sea diving. Don’t mess with compressed air or high powered jet sprays.
@@stanettiels7367 not a personal experience, but my boss knew someone who tried to wash their hands with high pressure sprayer. Died the same day unfortunately. Seriously, don't fuck with high pressure things.
@@randommodnar7141 how much did that person wash their hands with the sprayet to cause their death?? I can't imagine that would be a one time thing.
@@stanettiels7367 I seriously doubt you'd be able to cause decompression sickness by hitting one localized spot with a pressure washer. The bends occurs when your blood is saturated with various gases that then nucleate once your entire body is decompressed (similar to removing the cap from a bottle of soda).
You'd have to be blasting your body with a pressure washer for quite a while to separate enough gas to cause a similar effect.
Truly showing the legendary power of water. It can be like a cradle holding you, it can smash you to bits, and it can cut like a sword. Impressive really
"Be like water." - Bruce Lee
the strange curiosity to know if anyone has gotten murdered with water being used like a sword
It's not just water though, the water just carries grit in the middle, the grit does the damage
And it can drown whole countries!
@@AverageAlien They turned the abrasive grit off and it still cut through the hand my guy
ty for killing those thoughts in my head now ima be *way* more watchful when im near that stuff
If you are interested I asked Chatgpt and this is what…
convert mike tyson punch to psi
Converting the force of a Mike Tyson punch to psi (pounds per square inch) requires a few assumptions and estimations since the exact force of his punches and the contact area can vary.
First, let's estimate the force of Mike Tyson's punch. Some sources claim that Tyson's punches could generate a force of up to 1,600 pounds (7116.54 newtons) at his prime. However, the force of a punch can vary greatly depending on factors such as technique, speed, and the point of impact.
Next, we need to estimate the contact area of his fist. A typical human fist's knuckle area (which usually makes contact during a punch) is approximately 2 to 4 square inches (0.00129 to 0.00258 square meters). For this calculation, we'll use the average of 3 square inches (0.001935 square meters) as the contact area.
Now, we can calculate the pressure in pounds per square inch (psi):
Convert the force of Tyson's punch from pounds to newtons. In this case, we estimated his punch at 1,600 pounds, which is approximately 7116.54 newtons.
Calculate the pressure in pascals (Pa) by dividing the force (newtons) by the contact area (square meters): Pressure (Pa) = 7116.54 N / 0.001935 m^2 ≈ 3,676,000 Pa
Convert the pressure from pascals (Pa) to psi by multiplying the pressure in pascals by the conversion factor 0.00014503773779 psi/Pa: Pressure (psi) = 3,676,000 Pa * 0.00014503773779 psi/Pa ≈ 533 psi
Based on these estimations, the pressure of a Mike Tyson punch could be around 533 psi. Keep in mind that these numbers are approximate, and individual punches may have different forces and contact areas, which would affect the resulting pressure.
The initial cutting is damn terrifying, but combining that though with the high pressure injection injuries... That's some scary stuff.
Pain
E
Best way to get a clean ear piercing 😂
@@Druggy-Doggo or blow your ear off xD
My dad was a welder for years and even with his experience he had an accident with a hydraulic press. He was running sheet metal through and his friend called his name and distracted him for a split second and it came down on his ring finger, middle finger and pointer finger and the crazy part about it is he didn't even notice until his friend screamed "your fingers are gone Doug!"
He looks down and THEN felt the pain from it. He ended up getting about 30-40,000 off of the accident. He was a hard worker and a family man. I love and miss you every day dad. ❤️🥲
This is an excellent way to show the dangers in a factory, health and safety is paramount no room for complacency
Yeah. A stern reminder for everyone to treat their tools with respect, even if they aren't working in a job that might get them into a Plainly Critical Radiological Accident documentary. Plain old iron and water can mess you up plenty.
I don't want to be a woodworker any more
I’ve had so many close calls at work. Wire had gotten twisted in my machine, and when I cut it, it knocked my safety glasses clean off. I ended up with the tiniest cut on my eyelid, and it knocked my safety glasses 10-20 feet away. I spent a solid minute frantically touching my eyelid to see if it was bleeding and thanking whatever’s out there that it was only a scratch and not my eyeball.
Forgot to put on my gloves one time and sliced my hand open on a steel plate so I can agree with that. ALWAYS follow safety protocols 👍
it really makes you marvel at how amazing the human brain is to be able to design something that can use just water to severely cripple and almost cut off body parts.
It's not just water. A material called garnet shoots out with the water to help make the cut.
@@ruleaus7664 Steven universe reference
I like how the atmosphere of jokes and laughs shifted to one of visable apprehension and fear as the video progressed
as someone who works with saws all day this is terrifying
dad brother and husband are all construction workers who work with saws and they've all had some sort of hand injury.
Take. Off. Any. Jewelry. Period.
My worst nightmare is to get degloved by a bandsaw
I worked in the IUEC(Elevator Construction)for 15 years, ended up losing half my right hand to an elevator generator during a swap out. Seeing these experiments in slow motion, bring a whole new psychological impact to what happened to my hand. I'm getting phantom pains just watching this!
Holy fuck thats terrifying i cut my left thumb where it was barely hanging on by a little but of knuckle and skin and cut both tendons in a circular saw accident and i was experiencing the same thing my injury was a paper cut compared to yours lol it happened 7 months ago now and is healed but will never be 100% and always feels like a crazy stretch youre doing where you feel the burn real bad when streching and thats what it feels like using my thumb to max or close to max bend and now i always think when i see a band saw or a table saw or anything like that and think how bad that would fuck me up if id touch it
and i thought losing my nail and damaging my nail bed was bad
@@tomfooIeryz lol that’ll heal like it never happened your all good
@twizzm I appreciate that!🙏🏼
@@amanwithouthope9475 I'm glad to hear you were able to heal up as well as you did. Not only do these accidents hurt physically, but mentally it really can do a number too. The way my accident happened, I guess the generator could have rocked off the top landing and crushed me when they lost grip of the dolley allowing the piece to drop, although highly unlikely. Regardless, it helps me mentally thinking it could have been worse. I guess I could have legitly bled out if we didn't know what to do and tourniquet my arm properly. Even with the tourniquet I must have easily bled out 1.5 pints or so. It flowed from the top floor all the way down 18-22 floors and still pooled at the bottom. Going on 9 years now actually. Lost my home and had to liquidate my retirement/401k to keep a roof over my wife and I's head. Took my case going through the courts over 7 years to finally reach a Judge that found it absolutely appalling that it took that long for an amputee to get awarded disability. So just this past year we were finally awarded SSDI and backpay. The backpay for all those years doesn't even add up to one year of work at my last job and the state settlement for the accident was only $60K, so altogether about 1 year's pay at my elevator job. Pretty tough. The good thing is, my wife didn't leave me and we're finally back into our own place after 6 months living in our car and another year on the other side of the state living on a piece of family property with no power. We're still on the other side of the state but we have our own apartment and we have our health! Anyways man, thank you for sharing your story and for taking interest in mine. My apologies for such a delayed response. Take care and blessings to you and yours!
Thank you so so much for not bullshittinf this video and waiting until the very end to do the waterjet. Thank you
Straight to the point. THANK YOU+
I used to do the saw stop hot dog demo. The hot dog on its own isn't big enough to detect, I would have to be touching it. A good way for you to test this is when the saw is on with the blade not moving touch the blade, and you'll see the lights on the front blink if it can detect you. So if your holding the gel and touch the blade you'll know if it would work
it's wild how fast they are, with your hand i imagine you'd only just have a scratch that might not even bleed
@@Selendryle Any slower and that's a finger if not half the hand.
Very important for you to mention this- because the Saw Stop has it's limits in a demonstration scenario, but works extremely well in real-life work situations.
The hot dog alone doesn’t complete the circuit that activates the brake but add you to the hotdog and it is able to complete it
@@hatenbacon8306 That's what we figured would happen, hence the hot dog.
People who dont know: "Its just water"
People who know: "more like a laser of death"
ONG
REAL SHIT
Technically correct, but by that metric, lasers are just light and proton beams are just hydrogen.
Watching the saw cutting the hand sends a chill through my back. I thought those safety blade break should work. What a surprise. Thanks for testing!
They do work, but the material which the ballistic hand is made of does not trigger it, only the metal inside of it shich holds the bones together triggers it so its really delayed
Thank you for creating this video. You scared the intrusive thoughts out of me
I've seen what 20,000 psi touching a coworkers arm for a split second did (baseball sized chunk out of his arm plus the water injection issues which required him to wear a pump on his arm for a couple months) so I can imagine what this would do. Though that was a cutting tip tool for jetting lines that had multiple jets.
Jesus Christ died for your sinssssss please repent for the kingdom of heaven is at hand 🦶
@@jesuslovesyou2616 shut up
Let him spread the word🙏
@@jetstreamfam9349 ☆♡
@@yul12twelve I reported him for misleading information. The kingdom of Jesus is not at hand, according to the Vatican and other reliable sources.
Back in 1987 I was working at a place that manufactured stainless steel restaurant equipment like sinks and whatnot and they had several press breaks and one was a 40 ton break and they had it set up with a roller table on the back side and you'd have to reach through the die area and grab the steel and pull it through then push the pedal down bending the steel in the marked areas. Well this guy who had been working there a long time got too complacent and I don't know what was going through his mind but he reached through the break grabbed the steel and as he was pulling it through he pushed on the pedal and before he could get his arms through it the press break came down on both his arms about 4-6 inches above his wrist and completely smashed both his arms into. It was by far the most horrific accident I've ever seen at a work place and I'll never forget the chaos and insanity of it. We had about 20 guys working there and we all were freaking out. I was a young guy back then and had never seen anything like that. Ironically it was that accident that caused the business to shut down because the boss was running some kind of insurance fraud scam and I guess he was hoping that no one would get hurt or need to use their insurance (which they obviously didn't really have) and he could pocket all the money. But once he got hit with the huge medical bill for that accident his scam got found out and it led to all kinds of legal issues on top of a huge lawsuit for unsafe work conditions and damages. Crazy times... But yeah if you don't respect dangerous machinery then you're going to have a bad day. Eventually... 😂
Thats why you should always respect the equipment you are using.
One slight mistake could cost you a limb, or in the worst case scenario, life
I can only imagine that. I got three fingers caught in a 200 ton press brake between the part and the punches. Luckily I felt my wedding ring move and pulled off the pedal but my hand was still stuck until I reversed it. Ended up with three fractured fingers but I still consider myself lucky.
Just a setup of having to bend over a press area just to pull a sheet of metal in it screams "WTF I should get the FUCK out of this company right this instant!". Holy shit
I do hydraulics repairs (like garbage trucks dump trucks etc) and whenever i have to climb up to either diagnose or fix i always get so scared someone is gonna turn on the truck and activate it when im up there 😂
@@ayejay4028 My uncle owns a farm and has a bunch of hydrolic machines etc. One of them was a huge excavator with a big clamshell bucket. When i went to his house as a kid my cousins and i would sometimes climb inside it, despite being told not to because the excavator was old and broken and anything could happen. Looking back, if the bucket closed for whatever reason, our legs would have probably been severed or worse.
i love how the last hand flipped us off😅!
btw good content, interesting and pretty funny!
I believe the issue with the saw stop was that you dropped the hand.
Falling through the air so that it only touched the blade meant that the charge on the blade had nowhere to go so it didn't trip the brake. If you'd had it on the end of a metal stick or attached something to ground it you'd have probably gotten a reaction.
It's also much more akin to slapping the top of the blade then accidentally rubbing against it. I don't see how anyone would end up hitting a table saw in that way, in normal use.
@@shono1997 a slap like that could possibly occur from a serious trip(never underestimate the power of careless and stupid) but I definitely think that the lack of any connection to ground was why the saw stop didn't trigger.
@@shono1997 lol stuff like that is why they make it, guys that have been carpenters for 20+ years forget how dangerous everything around them is and lose fingers
@@sulkingsalamander6181 I'm gonna stick with what I said here. Idk how anyone slaps the top of a table saw. I mean outside of some insanely unlucky fall as the other comment said lol.
That’s not how it works, does not need grounding
great teaser trailer cant wait for the liveleak 😁
Thanks. I’ve always wanted to try this, but never had enough money to buy one.
As someone who’s hand went into a giant rotating saw blade I can attest to the damage they do in a split second. Tore out most of my thumb , all tendons and a tonne of meat. 10/10 would not recommend.
Before I’m accused of falling asleep at work, the place I worked had no saw bench and had to cut giant sheets of chip board, with no run off bench I had to put half in them flip and do the reverse, did half the cut and as I pulled it back it caught the board and pulled it in, moved my hand as quick as I could but not quick enough. Had I not tried to move my hand, I dare say I’d have no hand left. 2 years of physio and 2 reconstructions and I still have a thumb but I’ll never feel it again. I was very lucky.
Stop falling asleep at work. And stop telling fake stories.
@@warnertesla8297 Bad day?
@@warnertesla8297 zzzzzz
My grandfather (who had a penchant for doing LOTS of dangerous things) nearly sawed his index finger completely off (probably because he was rushing while he was fixing my power-tool inept uncle's house)
... and by nearly, I mean 99%... and then threw it in a bag and went to the hospital where they reattached it. I doubt it ever worked the same ever again, BUT he still had it!
@@warnertesla8297 why you dont get bitches
I personally think the scariest part is the experience of childhood, almost every kid has played with a water hose and no matter how many training videos or stern talking to about how dangerous it is, there will always be a part of your brain that doesn't consider the water a danger.
Theres countless things when working with machinery and in this craft your survival instincts cant tell if its dangerous or not you have to know in advance and thats why this work should always be promoted with caution.