@@radagast7200 yes it would and Ive seen cast saws that are shaped like that but it might just be cheaper to make the full circle like standard saws, who knows
Or maybe they just made predictions based on observations and then formed a hypothesis which they then tested with a series if experiments... you know? Science. No trauma necessary.
I put on and remove casts professionally in a children's ER. Yup, the friction burns are a real risk, but are preventable. The saw blade heats up from friction against the fiberglass, usually when it's a thicker/larger cast. My condolences to those who've been burned and/or gaslit. We're taught to cool the blade with a damp washcloth every few short passes. There's even a thick protective tape we can build into the cast along the cut line to prevent friction burns (blue saw stop tape). Never burned a patient (aged 5 months-18 years), and always demonstrated the blade first by running the blade along my palm. Can't say the same for all the coworkers I've seen do it, especially in the adult world.
Thanks for posting this. A doctor cut my cast when I was seven, and granted, it was back in the 80s. I also have C-EDS, which makes my skin friable, but it wasn't diagnosed until my 30s. The doctor called me a crybaby, but I still have the burn scars. All this to say, I really appreciate your comment. It's clarifying and validating.
@@seajelly2421I’m so, so sorry that he said that to you, and made you feel worse about something that was bad and made sense to cry over to you. That is extremely unprofessional, and very irresponsible for an adult to say, let alone A DOCTOR. I’m sorry he said that to you, and I hope that doctor gets better with his job, so he no longer hurts others. I apologize on behalf of that rude doctor for you, have a nice evening!
I got a cast removed at 6 years old and I still remember the guy putting it against his palm first, and it scared my mom haha. I’m 22 now. Didn’t get any friction burns from it, he did a good job
@@seajelly2421 Wtf a kid’s doctor should never call a child a crybaby. A doctor is probably the type of person who needs most to accept that they did something wrong.
I once had a nurse cutting my cast off of my recently broken leg, and i told her "hey the saw just burned me" and she swore up and down "no no it cant hurt you, its not able to cut anything except a cast" and i had to tell her "Yes, i know, it didnt CUT me, i said it BURNED me, its HOT from all the FRICTION" Its still a metal contraption and it gets very hot when it has to cut for a while
Are you okay? Is the burn going to get infected and leave you with millions in medical bills (from a different medical office, of course) that you'll have to sue the original nurse for?
No kidding. Me too. Cast on my leg and the dumb you-know-what chose to cut the cast right above the shin - thin, tight skin. My I shrieked in pain/fear, she told me to hush up. When the cast came off, my shin was covered in blood. I was 9.
I also got a very small cut when they removed a cast on my leg. Luckily it was more like a scratch and hardly bled. Nothing compared to the others I read about.
I was in the ER after breaking my arm and they put it in a cast. Shortly thereafter, I lost circulation in my hand and it went blue and cold to the touch. They had to take the cast off. When the technician was sawing through it, I screamed in pain, and he said „don’t be such a crybaby, it doesn’t cut skin”. I yelled back at him „yeah, but I’ve broken this arm TODAY”. He proceeded to finish the job without looking me in the eye or saying a word until he left.
Ok the saw might not be able to cut skin but the high friction with the cast does make the blade very hot so it can actually burn your skin. I know because when I got one of my cast removed as a child I was complaining that it was hurting me. Obviously I wasn’t taken seriously for the reasons you explained, but once the cast had been fully removed there were a bunch of visible marks on my skin where the blade was.
I actually have a small scar from when I got a cast removed as a child as it was because I broke my arm close to my wrist and the scar from that saw cutting me close to my knuckles yes I actually bled a bit so it did cut
This is EXACTLY what I needed! I broke my heel bone recently and wondered how they cut off the cast, my guess was an oscillating saw, and sure enough it is! I use a tool like this in construction work and I figured it was the only thing unlikely to cut the skin. Awesome!
Wish someone had demonstrated this to 5 yr old me years ago. I would have been fascinated and probably not nearly as scared at the time of cast removal.
My dad was the hospital manager, and I was six years old getting my arm cast removed. I flinched, kicked him in a sensitive area, causing him to double over and knock himself unconscious on the hospital bed! All the staff thought it was hilarious, which, to be fair, it was. After a minute or two they realised he was out cold…. 😂
Yes, it is able cut through human skin. Both the doc cutting the cast off & the nurse observing said I was overreacting when I said it was cutting me. Surprisingly, both were completely silent when the cast came off & they had to put plasters over the cut... 🙄
It would require actually pressing down, though I know because I had to get 2 casts off with 2 different doctors. The first one cut me, and the second one didn't (the blades can also heat up from the friction) when I mentioned that the doctor said "yeah most new doctors and even some older ones make the mistake of pressing down instead of just letting the blade cut the cast" or something along those lines i don't remember his exact words
@Dovah_Slayer yes, he was a young doctor that was pressing too hard. I told him several times but he thought he knew better. He didn't. I had another cast removed about 6 years by a nurse specialising in casts etc & had no problem whatsoever. Bizzarly, it was exactly the same cast shape but on the other hand!
And still....... When I had my cast removed as a sixth grader. The nurse told me it could not cut me. When it was removed, there was the blood. I still have the scar today. Old Bitty found a way to make it cut me.
When I was a kid a broke my leg really bad. When the nurse used this to cut my cast off I started screaming and she told me to shut up it can't hurt me. Each cut I screamed as she laughed. Her face changed when she opened the cast and the lining was soaked in blood. She was pushing so hard she made a non skin cutting saw cut deep into my skin that hadn't seen daylight in forever. Don't go to work in a bad mood I guess.
Why make the blade round like a circular saw? (to terrify kids I suppose). Since it just moving back and forth 3mm, the blade can be literally any shape -- 99% of the teeth on that cutting wheel are not even used.
I work in a factory that makes tools that function similarly. The ones we make are a small spinning metal ball covered in industrial grade diamonds on the end of a short rod. When you spin the tool, the diamonds on the outside cut through things by being hard instead of by being sharp, so it can cut through bone pretty easily but doesn’t cut through fleshy tissue very well.
the feeling when you get to cut a cast off and let the skin under it breathe is like heaven too, when I got my elbow out of a cast, i felt like a butterfly who just got out of his cocoon-
Omg they're the WORST surgeries. I've had a few abdominal surgeries including a C-section and the ones they inflate you are the WORST. 0 out of 10 do NOT recommend ☠️🤦♀️🙅♀️🤷♀️🤣
When I was 7 I broke my leg. As it was a very severe break I was in a cast for 3 months; each cat was changed after a month. When the second was to be changed to the third, I felt sharp pain in my leg. I told the doctor that the saw was cutting me. He shut off the saw and put it down on the paper covering the table. (Needless to say the blade was almost stationary when he did so.) The doctor said, "That's impossible. Look-- it doesn't even cut paper." One month later, when my last cast was removed and Icould inspect my leg for the first time in 3 months, there was the scabbed scar line where the saw had cut into my flesh. Even as a 6-yr old I was ticked off and felt that he lied to me. Clearly this type of saw was not in widespread use in the mid-1970s.
I have seen so many "explanations" of this that just stop with "because it moves back and forth instead of rotating" without ever explaining why that wouldn't cut skin. This was well done and complete. Thanks!
If you scratch under your cast and pull all the gauze out of the cast, this saw will be like a branding iron as the doctor takes off your cast. The blade vibrating against the cast makes heat. A LOT of heat. Doctor was taking off my leg cast and I was yelping. He was getting aggravated with me saying the saw cant hurt you!. When my full leg cast was off I showed the doctor my two new rally stripes. One up and down each side of my leg where the saw went. Burns.
You used the wrong ruler. don't fuck with the gauze. But go ahead tell the people just how good it feels to scratch that itch beneath the cast. It was fuckin lovely wasn't it
If you press it too hard, it will cut soft tissues. I myself (who is a medical student who was dissecting in anatomy class) was using a cast cutter to cut through the cranium and kinda severed the brain in the process 💀
Recently, my son was helping me do some basic home maintenance/repairs stuff. I had him cut some wood with one of those oscillating multi-tool things, and he was actually being so skittish about it that he was increasing the chances he'd hurt himself (as well as doing a terrible job cutting the wood). So I just calmly took the saw and put the blade against my arm ;) BTW: Never ever ever do that with a rotating blade, a bandsaw, drill bit, ect. They not only will happily cut your "underinflated balloon"... they can be very grabby.
Provided it doesn't hit a joint between your thumb and hand which is stretched. I hand a cast on years ago and when cutting it off it cut my hand slightly. But they are cutting now like in the video and not from the fingers end.
I always loved using what we called a vibratory saw in my line of trades work! You can cut pieces of literally any material (wood, plastic, metal) right in your hand and never worry about cutting yourself. Old timers would lecture me about how I’d cut myself that way, and I’d look right at them and drive the saw into my hand and nothing would happen. The looks on their faces would be priceless!
Huh. Are you sure this is the case generally? I just commented elsewhere in these comments with someone who also praised these tools (but didn't mention anything to do with it touching skin), that I believe I've heard it's not safe, since the powertools use different vibration frequencies and amplitudes (how fast they move and how much)? I just think I've heard somewhere that medical cast saws are tuned to be safe(r) to use against skin. Then again, your palm is some of the most flexible skin there is; did you ever try this in other places?
That's also because it's not a saw nor is that even what the tool is called. It's an OMT or Oscillating Multi-Tool, and oscillates very similarly to this. I use one every single day.
@@jeremyjohnson9585 Ive heard it called a multi-tool too, I understand that it MIGHT not cut my skin but im not about to risk it. Ive heard of guys getting too comfortable around table saws and losing 3 fingers so they cant play the guitar anymore. I like my fingers, im not gonna play with fate thanks.
I've seen this explained multiple times, but this is the only time an explanation was given that actually made me understand how it works. Hats off to you, good sir. Subscribed.
I was around 10 when I broke my arm and freaked out more about this thing cutting my arm to bits than when I actually broke my arm. I wish they explained this to me when I got my cast removed
Fun fact! This saw inspired the multi-tool. A tool which Dewalt and other tool manufactors make. Its a handy tool that uses this reciprocating movement for finish trim and other niche cuts you would have to make on a home.
Just to mention this, since there might be someone wondering: no, I don't believe you can safely use a powertool vibration saw for casts or consider it any sort of safe for skin contact, generally. The vibration frequency and amplitude (the movement "speed" and "distance", respectively) are tuned differently on a medical device, to be safe(r) for this; the powertool however, will cut you (I believe).
@@mnxs depends on the attachment. The more aggressive demo blades certainly would. But the metal ones have small enough teeth that it just very uncomfortably rattles your skin. Why do I know this? 😕 misuse on my part.
So has anyone who has tried to cut a hot Thanksgiving turkey coming out if the oven, with a carving knife OR with a Sawzall. Much easier when it's cold, dense, and firm.
K.D. presents to the emergency room where we are now, doctors diagnose him with air-emia, emia meaning presence in blood. He looks like he was on my 1000 pound life but is only 180 pounds, doctors prescribed him with a needle.
Yes. Absolutely. 😏 Look up hydraulic injection wounds.... Also... If you put a glass of water in an airless vacuum environment it will boil rapidly. What do you think happens if your body, eyes, blood are exposed to space? 🎈
When I broke my arm I was worried about the saw when they were taking the cast off, so they demonstrated this, I love how things like this get made, it's cool and practical
It's actually called an oscillating multi-tool. You can get one for thirty bucks. Hospitals will pay thousands, however. Because whats it matter when insurance or the patient will cover the cost anyway.
I’ve gotten quite a few casts throughout my life and no one has ever explained this to me… here I am all nervous they’re gonna mess up and tear my arm apart for no reason 🤦🏽
Hey Steve, I'm a kid and I love your show. My dad and I watch it together. I doubt you'll see this, but there are two things that I think you might be interested in: * pitot tubes -(devices used to measure pressure, simple small devices yet involved in some very large plane crashes) * meteor burst communications / moon bounce - reflecting radio waves off meteors during entry into the earths atmosphere, or the moon, to get better range. Wild and interesting stuff. Can apparently be done by normies like us! The cool thing about both these topics is that you can actually build your own experiments at home! My dad and I are planning on building a raspberry pi based WSPR/WSJT device to try meteor based communication. Or maybe we will start with "moon bounce" radio communication, that might be easier 😂 (Edited by "Dad")
You did not take into account the pressure at which you are pushing that saw against the 2 objects. If you were to put literally 1 ton per square cm of force over that saw, it would most definitely "cut" the human skin.
It does seem to have a lot of wasted teeth with how that works I'm assuming the blade is adjusted periodically as it dulls or maybe the tool itself is rotated.
Like the previous commenter said, it helps the nurse not have to contort in all sorts of shapes to make it around some more complex casts. Some esoteric models looked more like electric bread knives or reciprocating saws during the transition between manual cast saws and the modern circular saws.
It's safer this way. The short/flat 1" wide oscillating tool heads are known as being for "plunge cuts," and are prone to pushing through the workpiece. Round heads are better for not pushing through, and maintaining straight lines, even on complex surfaces.
So that is cleaves right off in case the mechanism fails and it moves full circle coz you wouldn't want a metal blade sticking out of your flesh in a weird way after all.
I broke my arm when i was about 6 and i was terrified of the cast saw because i thought it was going to go straight through my arm the doctor could see that i was scared so to prove that it was safe he moved the saw up and down his arm to show me it wouldn't cut me. 6 year old me was baffled
They prevent deep saw cuts and won’t hurt if you slip and touch the skin but they will injure skin if you leave them in place for more than a few seconds, or they contract some scar tissue which is often thinner, tighter and less stretchy. Plus they can get hot.
The balloon comparison made me finally understand why it works that way
Brilliant. Love the explanation 🙏
Yea cuz ur so stupid they couldn’t simply say “your skin isn’t stiff enough for it break under a vibrating tool”
I just don't understand why the blades are full circles if they aren't spinning... wouldn't just a little quarter circle blade work just fine?
@@radagast7200 yes it would and Ive seen cast saws that are shaped like that but it might just be cheaper to make the full circle like standard saws, who knows
👍
Whoever designed this clearly went through a traumatic experience
Fr
Or maybe they just made predictions based on observations and then formed a hypothesis which they then tested with a series if experiments... you know? Science. No trauma necessary.
why?
🤓@@WhiskeyNixon
@@WhiskeyNixonthat’s sick.
I put on and remove casts professionally in a children's ER. Yup, the friction burns are a real risk, but are preventable. The saw blade heats up from friction against the fiberglass, usually when it's a thicker/larger cast. My condolences to those who've been burned and/or gaslit.
We're taught to cool the blade with a damp washcloth every few short passes. There's even a thick protective tape we can build into the cast along the cut line to prevent friction burns (blue saw stop tape).
Never burned a patient (aged 5 months-18 years), and always demonstrated the blade first by running the blade along my palm. Can't say the same for all the coworkers I've seen do it, especially in the adult world.
Thanks for posting this. A doctor cut my cast when I was seven, and granted, it was back in the 80s. I also have C-EDS, which makes my skin friable, but it wasn't diagnosed until my 30s. The doctor called me a crybaby, but I still have the burn scars. All this to say, I really appreciate your comment. It's clarifying and validating.
@@seajelly2421I’m so, so sorry that he said that to you, and made you feel worse about something that was bad and made sense to cry over to you. That is extremely unprofessional, and very irresponsible for an adult to say, let alone A DOCTOR. I’m sorry he said that to you, and I hope that doctor gets better with his job, so he no longer hurts others. I apologize on behalf of that rude doctor for you, have a nice evening!
I got a cast removed at 6 years old and I still remember the guy putting it against his palm first, and it scared my mom haha. I’m 22 now. Didn’t get any friction burns from it, he did a good job
@@seajelly2421 Wtf a kid’s doctor should never call a child a crybaby. A doctor is probably the type of person who needs most to accept that they did something wrong.
Yes, it happened to me. 😊
I once had a nurse cutting my cast off of my recently broken leg, and i told her "hey the saw just burned me" and she swore up and down "no no it cant hurt you, its not able to cut anything except a cast" and i had to tell her "Yes, i know, it didnt CUT me, i said it BURNED me, its HOT from all the FRICTION"
Its still a metal contraption and it gets very hot when it has to cut for a while
Did she use ChatGPT to get through med school?
Average school nurse knowledge lmfao
Are you okay? Is the burn going to get infected and leave you with millions in medical bills (from a different medical office, of course) that you'll have to sue the original nurse for?
I cast person had a comment right under yours talking about friction burn risk
@@shadowreaper4811she was just ignorant we aren’t even trained to do that she didn’t know what she was doing
However, if the medical technician applies too much pressure to the cast saw, as they cut the cast, they will cut skin. I have a scar to prove it.
Sounds like a medical malpractice payout….
No kidding. Me too. Cast on my leg and the dumb you-know-what chose to cut the cast right above the shin - thin, tight skin. My I shrieked in pain/fear, she told me to hush up. When the cast came off, my shin was covered in blood. I was 9.
At least your arm didn’t pop. That would be harder to heal than a broken bone I bet.
Same from when I was a child
I also got a very small cut when they removed a cast on my leg. Luckily it was more like a scratch and hardly bled. Nothing compared to the others I read about.
I was in the ER after breaking my arm and they put it in a cast. Shortly thereafter, I lost circulation in my hand and it went blue and cold to the touch. They had to take the cast off. When the technician was sawing through it, I screamed in pain, and he said „don’t be such a crybaby, it doesn’t cut skin”. I yelled back at him „yeah, but I’ve broken this arm TODAY”. He proceeded to finish the job without looking me in the eye or saying a word until he left.
out of curiosity.. how did you break your arm?
People like that are in the wrong field. In general, I prefer women medical professionals, doctors and technicians.
@@joelwexlerand that there is sexist.
@@joelwexlerThere are also women in medicine who call people crybabys and are rude.
@@Revernaughtnot all men but most often men
Ok the saw might not be able to cut skin but the high friction with the cast does make the blade very hot so it can actually burn your skin. I know because when I got one of my cast removed as a child I was complaining that it was hurting me. Obviously I wasn’t taken seriously for the reasons you explained, but once the cast had been fully removed there were a bunch of visible marks on my skin where the blade was.
same
That...
Probably means the doctor was incompetent and actively pushed it into your skin...
I actually have a small scar from when I got a cast removed as a child as it was because I broke my arm close to my wrist and the scar from that saw cutting me close to my knuckles yes I actually bled a bit so it did cut
Bro described it very well to be honest.
Well, still props to the designer that the skin didn't come off. 😳
This is EXACTLY what I needed! I broke my heel bone recently and wondered how they cut off the cast, my guess was an oscillating saw, and sure enough it is! I use a tool like this in construction work and I figured it was the only thing unlikely to cut the skin. Awesome!
Wish someone had demonstrated this to 5 yr old me years ago. I would have been fascinated and probably not nearly as scared at the time of cast removal.
I was 6 when I had to have my cast cut off
I thought it was common practice for the doctor or whomever is cutting a kids cast to place the tool on his own skin to show that it wont cut skin.
Honestly and a bit concerningly most doctors probably don't even understand the principles of the tools they use merely that they do the thing.
My dad was the hospital manager, and I was six years old getting my arm cast removed. I flinched, kicked him in a sensitive area, causing him to double over and knock himself unconscious on the hospital bed! All the staff thought it was hilarious, which, to be fair, it was. After a minute or two they realised he was out cold…. 😂
I wish someone had done the same for me, except I was 22 at the time 😂
That is how ultrasonic knives can be tuned to cut a certain hardness of materials.
that's how metal gears are made :)
@@bananaraptor7747 More accurately, unmade.
@@dragon_os5153 Rules of Nature
HF blade!! RULES OF NATURE!!
im sorry ultrasonic knives? that sounds cool as fuck
"Oops wrong saw"
😳 🤣🤣🤣🤣
😂 😂 😂 😂
Right?? Can't they make it A different color???
"And that's how I lost my medical license!"
@@illegalisntlegal*dove pops out of chest*
Yes, it is able cut through human skin. Both the doc cutting the cast off & the nurse observing said I was overreacting when I said it was cutting me. Surprisingly, both were completely silent when the cast came off & they had to put plasters over the cut... 🙄
It would require actually pressing down, though I know because I had to get 2 casts off with 2 different doctors. The first one cut me, and the second one didn't (the blades can also heat up from the friction) when I mentioned that the doctor said "yeah most new doctors and even some older ones make the mistake of pressing down instead of just letting the blade cut the cast" or something along those lines i don't remember his exact words
@Dovah_Slayer yes, he was a young doctor that was pressing too hard. I told him several times but he thought he knew better. He didn't. I had another cast removed about 6 years by a nurse specialising in casts etc & had no problem whatsoever. Bizzarly, it was exactly the same cast shape but on the other hand!
And still.......
When I had my cast removed as a sixth grader. The nurse told me it could not cut me. When it was removed, there was the blood. I still have the scar today. Old Bitty found a way to make it cut me.
when ur fat, ur basically inflated, so maybe that's it?
Same here. I was cut 3 times and have the scars still
You were over inflated
@@nisaldilushaDissanayake😂
@@nisaldilushaDissanayakeLol WTF 😂
When I was a kid a broke my leg really bad. When the nurse used this to cut my cast off I started screaming and she told me to shut up it can't hurt me. Each cut I screamed as she laughed. Her face changed when she opened the cast and the lining was soaked in blood. She was pushing so hard she made a non skin cutting saw cut deep into my skin that hadn't seen daylight in forever. Don't go to work in a bad mood I guess.
She's only to cut to the rappings then cut the rest with scissors.
Horrifying, I'm sorry such a thing happened to you as a kid
Liar
@@Late_Arrival05
Doubt he's lying.
I got burned by the cast saw.
@@lorieakin5771 I've gotten mild burns from a cast saw, too.
I just wish the doctors would explain that before diving in with this crazy saw. Scared the crap out of me at first when I had my cast removed.
If you’re hesitant, they often show you by putting their fingers or hand on the blade while it’s running
😂
Not the sharpest knife in the drawer are you Colton
Why make the blade round like a circular saw? (to terrify kids I suppose). Since it just moving back and forth 3mm, the blade can be literally any shape -- 99% of the teeth on that cutting wheel are not even used.
@@beepbop6697 i imagine it's probably to allow the user to make cuts from any angle
I work in a factory that makes tools that function similarly. The ones we make are a small spinning metal ball covered in industrial grade diamonds on the end of a short rod. When you spin the tool, the diamonds on the outside cut through things by being hard instead of by being sharp, so it can cut through bone pretty easily but doesn’t cut through fleshy tissue very well.
I bet it’s *REALLY* good at scratching an itchy spot
the feeling when you get to cut a cast off and let the skin under it breathe is like heaven too, when I got my elbow out of a cast, i felt like a butterfly who just got out of his cocoon-
@@maplebananthat sounds beautiful
@@maplebananwhen i was a kid I always wanted to break a bone just for the feeling of taking a cast off 😂
Imma test that out
@@bunny2867imma tear my leg off so my feet and shins won't hurt when i walk
When I had my cast removed as a kid, the doctor showed me how the cast saw doesn't hurt me. It made me feel so much more at ease
Human skin as an under-inflated balloon is an unsettling image to think about the opposite of.
we're just a buncha low-effort meat balloons
Just lower the pressure of the surrounding atmosphere and find out 🎉
It's unsettling only if you never watched Fist of the North Star as a child :D
Is it really? I mean, we regular compare ourselves to meatbags or pottery heads.
the blueberry incident in wonka's factory
When I got my cast off my wrist the cast saw didn’t cut me, but it did give me a burn that was a scar for several months
Great comparison. In some operations, the abdominal cavity is actually filled with gas. Then you are no longer under-inflated...
Same some surgeries on some joints, like a shoulder or knee.
How about D
Already had
Can it cut it when inflated haha
Omg they're the WORST surgeries. I've had a few abdominal surgeries including a C-section and the ones they inflate you are the WORST. 0 out of 10 do NOT recommend ☠️🤦♀️🙅♀️🤷♀️🤣
When I was 7 I broke my leg. As it was a very severe break I was in a cast for 3 months; each cat was changed after a month.
When the second was to be changed to the third, I felt sharp pain in my leg. I told the doctor that the saw was cutting me. He shut off the saw and put it down on the paper covering the table. (Needless to say the blade was almost stationary when he did so.) The doctor said, "That's impossible. Look-- it doesn't even cut paper."
One month later, when my last cast was removed and Icould inspect my leg for the first time in 3 months, there was the scabbed scar line where the saw had cut into my flesh. Even as a 6-yr old I was ticked off and felt that he lied to me.
Clearly this type of saw was not in widespread use in the mid-1970s.
Lets not forget what chainsaws were used for not so long ago
I had broken my wrist when I was 4. When they cut off the cast, it cut my thumb. I still have the scar. I'm just saying.
Did you just call me an underinflated balloon?🤨
Would you prefer to be overinflated
@@ilyte1what is that supposed to mean
Lol I laughed for like 15 min good one man🫂
@@JotaroIRL glad to hear😁🫂
He just called you an underinflated balloon. You are an underinflated balloon.
I like the way he says "bloon"
Dude is spitting out knowledge that you didn't need to know but still grateful for learning about after.
This is pretty much exactly what I wanted to say but didn't know how to say it so thanks!
@@nikkimarie92same lol 😂
Exactly 😂😂
i mean, isn't the answer pretty obvious after thinking about it for a few seconds?
He's very good at explaining it to people
The take away: We're just under inflated baloons
Not when I eat too many beans I’m not.
I knew it!
@@YuBeace 😂😂😂
I have seen so many "explanations" of this that just stop with "because it moves back and forth instead of rotating" without ever explaining why that wouldn't cut skin. This was well done and complete. Thanks!
I had a stroke trying to understand that
@@jefferydavidson5347it’s not that hard I promise
@@jefferydavidson5347Do you need a cast for that? 😐⚙️🧠
@@jefferydavidson5347 It just means that this one shows a more thorough example with something more easily understood than any other video.
THANK YOU 😊
If you scratch under your cast and pull all the gauze out of the cast, this saw will be like a branding iron as the doctor takes off your cast. The blade vibrating against the cast makes heat. A LOT of heat. Doctor was taking off my leg cast and I was yelping. He was getting aggravated with me saying the saw cant hurt you!. When my full leg cast was off I showed the doctor my two new rally stripes. One up and down each side of my leg where the saw went. Burns.
My uncle had the same experience. Not cut - but burned and branded!
That's what you get for being an overinflated baloon. :D
I guess you learned why you shouldn't have pulled the gauze out, didn't you?
Happened to me too at the arm, still have a scar from those 3rd degree burns
You used the wrong ruler.
don't fuck with the gauze. But go ahead tell the people just how good it feels to scratch that itch beneath the cast. It was fuckin lovely wasn't it
When I was 8 and had a cast removed, I was AMAZED how it didn't cut me and have wondered how ever since. Thank you for answering this 😄
That's actually an AWESOME demonstration of how does this mechanic work, love it
Omg I always put so much trust in the doctor taking it off thinking it could cut me- 😭
If you press it too hard, it will cut soft tissues.
I myself (who is a medical student who was dissecting in anatomy class) was using a cast cutter to cut through the cranium and kinda severed the brain in the process 💀
It makes sense that if the flesh is braced between the active saw and dense bone, the stretch property is less effective.
Hopefully not a live brain 😅
Was the patient okay afterwards?
No.. He possibly did it for a cadaver not a live patient..
Man, i imagine he'd be pissed, if not for the brain damage
That's so cool, props to whichever engineer thought up that design.
Dr. Homer Stryker of Kalamazoo, Michigan
@michaspi I honestly thought you just made up a BS name and place there
@@titchc3657lol yes. Apparently a rather accomplished fellow. 👍
It was the flash that came up with the design😂 /j
Recently, my son was helping me do some basic home maintenance/repairs stuff. I had him cut some wood with one of those oscillating multi-tool things, and he was actually being so skittish about it that he was increasing the chances he'd hurt himself (as well as doing a terrible job cutting the wood). So I just calmly took the saw and put the blade against my arm ;)
BTW: Never ever ever do that with a rotating blade, a bandsaw, drill bit, ect. They not only will happily cut your "underinflated balloon"... they can be very grabby.
Provided it doesn't hit a joint between your thumb and hand which is stretched. I hand a cast on years ago and when cutting it off it cut my hand slightly. But they are cutting now like in the video and not from the fingers end.
Cast saw: "ATTACK!!"
Human skin: "My money dont jiggle-"
It folds
My instructors in PT school never explained why we couldn’t cut ourselves when we were trying casting and taking them off and now I know why. Thanks!
@goosbums1 apparently they can if used by idiot doctors. Few comment threads above your comment will explain
Steve just gave me my next insult: "You under-inflated skin bag."
yeah, well you're an over-inflated skin bag buddy!
Hurts extra against weight loss surgery patients.
Still better than douchebag, though. :D
However if they arent careful and dont take their time with it the friction can, and will burn you. My little brother has a scar from it still
Me as well I was just bouta argue I got cut from one
I always loved using what we called a vibratory saw in my line of trades work! You can cut pieces of literally any material (wood, plastic, metal) right in your hand and never worry about cutting yourself. Old timers would lecture me about how I’d cut myself that way, and I’d look right at them and drive the saw into my hand and nothing would happen. The looks on their faces would be priceless!
Huh. Are you sure this is the case generally? I just commented elsewhere in these comments with someone who also praised these tools (but didn't mention anything to do with it touching skin), that I believe I've heard it's not safe, since the powertools use different vibration frequencies and amplitudes (how fast they move and how much)? I just think I've heard somewhere that medical cast saws are tuned to be safe(r) to use against skin. Then again, your palm is some of the most flexible skin there is; did you ever try this in other places?
That's also because it's not a saw nor is that even what the tool is called. It's an OMT or Oscillating Multi-Tool, and oscillates very similarly to this. I use one every single day.
@@jeremyjohnson9585If you read the comment you’d notice they said “what we called” not “what the device is and is called”
This old timer was doing this in the early 70's.
@@jeremyjohnson9585 Ive heard it called a multi-tool too, I understand that it MIGHT not cut my skin but im not about to risk it. Ive heard of guys getting too comfortable around table saws and losing 3 fingers so they cant play the guitar anymore. I like my fingers, im not gonna play with fate thanks.
I saw a video about this fact before but i still didn't understand why. Now i get it. Thanks for a good educational video
I've seen this explained multiple times, but this is the only time an explanation was given that actually made me understand how it works. Hats off to you, good sir. Subscribed.
did this man just call me an underinflated baloon 😂
When I broke my leg I got a burn from the cast saw. I was a child and they held me down when I started to cry and say it burned
Same
I was around 10 when I broke my arm and freaked out more about this thing cutting my arm to bits than when I actually broke my arm. I wish they explained this to me when I got my cast removed
Fun fact! This saw inspired the multi-tool. A tool which Dewalt and other tool manufactors make. Its a handy tool that uses this reciprocating movement for finish trim and other niche cuts you would have to make on a home.
It can get into narrow spots where other tools wont fit. It comes in handy more than I expected.
Just to mention this, since there might be someone wondering: no, I don't believe you can safely use a powertool vibration saw for casts or consider it any sort of safe for skin contact, generally. The vibration frequency and amplitude (the movement "speed" and "distance", respectively) are tuned differently on a medical device, to be safe(r) for this; the powertool however, will cut you (I believe).
Fein
@@mnxs depends on the attachment. The more aggressive demo blades certainly would. But the metal ones have small enough teeth that it just very uncomfortably rattles your skin. Why do I know this? 😕 misuse on my part.
Bro called us all a airhead in the nicest way
This short is the best explanation I have seen on this topic to date, very concise and easy to understand
Anyone who has tried to cut a flexible board with a sawz-all also has learn this lesson.
Sounds a rather specific task
@alejrandom6592 Not really, it happens all the time while cutting sheet material.
So has anyone who has tried to cut a hot Thanksgiving turkey coming out if the oven, with a carving knife OR with a Sawzall. Much easier when it's cold, dense, and firm.
Or, too thin a branch...
So.. you are saying that my body can be inflated?
I'm gonna stop you right there, buddy
K.D. presents to the emergency room where we are now, doctors diagnose him with air-emia, emia meaning presence in blood. He looks like he was on my 1000 pound life but is only 180 pounds, doctors prescribed him with a needle.
Air-emia is called an embolism ;)
Only once
Yes. Absolutely.
😏 Look up hydraulic injection wounds....
Also... If you put a glass of water in an airless vacuum environment it will boil rapidly.
What do you think happens if your body, eyes, blood are exposed to space? 🎈
What if I’m a bodybuilder on show prep with a pump?
minor skin damage can occur depending on the saw and your skin, but it won't cut straight through the flesh👍
As a kid i cut off my cast using a Dremel tool with saw blade and a wooden ruler under the cast. The dumb things kids do. 😧
Not using the ruler would have been dumb. You were resourceful.
As a kid, why were you removing your cast?
It would be dumb if you didn't use a shield. 👍
I would never have thought to use the ruler.
Most dangerous part would probably be the dust, or not wearing. Eye pro.
When I broke my arm I was worried about the saw when they were taking the cast off, so they demonstrated this, I love how things like this get made, it's cool and practical
WHY DONT THEY TELL THAT TO LITTLE KIDS BEFORE THEY JUST RIP THAT THING OUT
It's actually called an oscillating multi-tool. You can get one for thirty bucks. Hospitals will pay thousands, however. Because whats it matter when insurance or the patient will cover the cost anyway.
the hospital one was invented first
I broke my leg like 5 years ago and the saw kinda tickles
Or, how when you try to cut string with scissors, it's much much easier when under tension.
I’ve gotten quite a few casts throughout my life and no one has ever explained this to me… here I am all nervous they’re gonna mess up and tear my arm apart for no reason 🤦🏽
Hey Steve, I'm a kid and I love your show. My dad and I watch it together. I doubt you'll see this, but there are two things that I think you might be interested in:
* pitot tubes -(devices used to measure pressure, simple small devices yet involved in some very large plane crashes)
* meteor burst communications / moon bounce - reflecting radio waves off meteors during entry into the earths atmosphere, or the moon, to get better range. Wild and interesting stuff. Can apparently be done by normies like us!
The cool thing about both these topics is that you can actually build your own experiments at home! My dad and I are planning on building a raspberry pi based WSPR/WSJT device to try meteor based communication. Or maybe we will start with "moon bounce" radio communication, that might be easier 😂
(Edited by "Dad")
I wish I had a kid like you!
I dont understand why its a full circle when only a third of the saw is being used?
When part of it wears out, you can just use the other parts
I already knew how they work, but this might be the best explanation I saw so far. A bit of an example eith the balloons too. Nice!
I was not prepared to hear "human skin is like an underinflated balloon"
“Don’t try this at home”
like we got a cast saw at home 😭 🙏 💀
I have an oscilating multi tool and i tried this first minute when I bought it.
It's a 3.4° and did not hurt. I guess 2.8 are safer.
You did not take into account the pressure at which you are pushing that saw against the 2 objects. If you were to put literally 1 ton per square cm of force over that saw, it would most definitely "cut" the human skin.
Why would anyone do that though? Might as well just use a normal saw...
The teeth of the saw stab your skin if you push that hard. It's self explanatory isn't it?
Because that's pushing the skin and stretching it out, which then makes it less elastic and vulnerable to the cutting.
THOSE FINGER MOTIONS
Bruuuh
That underinflated balloon needed a cigarette afterwards
@@brandondegraaf indeed
My cast when removed cut deep in near my wrist, i still have the scar.
Even if it won’t cut you, the shit hurts especially when you have a big cast and it gets hot💀💀💀
Good vid btw
It is actually called a oscillating saw, but cast is the same
"human skin is like an under inflated balloon" is a concerning sentence out of context
It rubs the lotion on its skin... or else it gets the hose again.
I have had a cast come off and the heat from the blade after cutting your cast hurts more then the actual blade😂
It does seem to have a lot of wasted teeth with how that works I'm assuming the blade is adjusted periodically as it dulls or maybe the tool itself is rotated.
Think about the shape of casts. A circular blade is necessary to be able to conform to any shape of cast while also being operated comfortably
Like the previous commenter said, it helps the nurse not have to contort in all sorts of shapes to make it around some more complex casts.
Some esoteric models looked more like electric bread knives or reciprocating saws during the transition between manual cast saws and the modern circular saws.
It's safer this way. The short/flat 1" wide oscillating tool heads are known as being for "plunge cuts," and are prone to pushing through the workpiece. Round heads are better for not pushing through, and maintaining straight lines, even on complex surfaces.
@@MDuarte-vp7bm Makes sense! I do have an oscillating tool so completely get what you're saying.
Why is it a full circle blade though?
So that is cleaves right off in case the mechanism fails and it moves full circle coz you wouldn't want a metal blade sticking out of your flesh in a weird way after all.
Because we're pizza
@@insaneopinionsthat’s not it at all
It’s like that because it has good enough depth while not having any sharp edges and you can hold it however you need to
@Industry-insider makes sense, thank you
Ultimate itch scratcher 💀💀💀
They cut my son taking his cast off he was devastated lol
Well, some parts of your skin and your nails aren't safe.
The lady who cut my friends cast off pressed to hard and she has a scar now
too... not to
Who has a scar now.. the friend or the lady who cut the cast?
@@melissachartres3219 my friend..? How would the lady get a scar also who asked it’s called a typo
TLDR;
The blade jiggles and can't cut elastic material, skin is elastic.
I have always wondered how that was possible! Your channel has literally taught me so much.. thank you!
00:43 the way he did that💀
that balloon got violated 😭
I think they both enjoyed it...
It's crazy to me that someone even thought of this as a possibility
Why is the saw a disk shape then?
So you don't have to rotate the tool
Also for balance I imagine
To scare people
You can also rotate the blade as sections get dull so you don’t have to replace the blade as often.
Ease of use
Gum-gum balloon sounds like a liability now that we I know this
If it dosnt rotate, why is it a full circle?
To cut at any angle without having to rotate the patient of reposition the tool. Think of casts on bent joints, like feet, elbow, etc.
If it were just a partial circle then the thing would vibrate too much, though you could have a partial circle with a counterweight.
@@jaapsch2 Thanks for the explanation :)
Lesson: we are under infilated ballons and casts are over infilated ballons
I broke my arm when i was about 6 and i was terrified of the cast saw because i thought it was going to go straight through my arm the doctor could see that i was scared so to prove that it was safe he moved the saw up and down his arm to show me it wouldn't cut me. 6 year old me was baffled
Should have told me that when I was 16,I was terrified at getting my cast cut off then that was 55 years ago😮
You are becoming my favorite UA-cam content creator behind the Lost In the Pond guy and the Downie Live, the train and other thing guy.
People have tried explaining this before but I never got it. The visuals are very informative. Great job.
"Human skin as an under inflated balloon."
What a terrifying new sentence.
I’ve wondered about this for a long time off and on. Thank you!
"Underinflated balloon" sounds like a good insult
Now try this with a hacksaw on the skin see if you still have arm after that 😂
They prevent deep saw cuts and won’t hurt if you slip and touch the skin but they will injure skin if you leave them in place for more than a few seconds, or they contract some scar tissue which is often thinner, tighter and less stretchy. Plus they can get hot.
There are brick and paver saws that operate on the same principle and are therefore called ‘safety’ saws.
what if i’m just super lean and pure muscle?
So if I had puffy skin or a bubble like bump on my arm the saw would go through?!
“Bloon”
Bro had a secret hard attack when the balloon popped 😭💀