Why Machines That Bend Are Better

  • Published on Mar 12, 2019
  • Compliant mechanisms have lots of advantages over traditional devices. SimpliSafe is awesome security. It's really effective, easy to use, and the price is great. Check out SimpliSafe here: simplisafe.com/veritasium
    I visited the Compliant Mechanisms Research group at Brigham Young University and spoke to Professor Larry Howell:
    At the above link, you can download 3D-print files to make some of the objects in the video, plus learn more about compliant mechanisms.
    What I learned about compliant mechanisms I summarize in the 8 P's of compliant mechanisms:
    1. Part count (reduced by having flexible parts instead of springs, hinges)
    2. Productions processes (many, new, different enabled by compliant designs)
    3. Price (reduced by fewer parts and different production processes)
    4. Precise Motion (no backlash, less wear, friction)
    5. Performance (no outgassing, doesn't require lubricant)
    6. Proportions (reduced through different production processes)
    7. Portability (lightweight due to simpler, reduced part count designs)
    8. Predictability (devices are reliable over a long period of time)
    Special thanks to Patreon supporters:
    Donal Botkin, James M Nicholson, Michael Krugman, Nathan Hansen, Ron Neal, Stan Presolski, Terrance Shepherd
    Animation by Alan Chamberlain

Comments • 4 379

  • Luan Cavalcanti
    Luan Cavalcanti 10 hours ago

    Otimo video. Parabéns!

  • IamGravel
    IamGravel 11 hours ago

    at first i read machines that blend. Reminds me of the Will it Blend videos from years ago

  • Kai Schoneweis
    Kai Schoneweis 11 hours ago

    Are you kidding? I could bend a girder to any angle - thirty degrees, thirty-two degrees... thirty-one... but I couldn't go on living once I found out what they were for.

  • Craze Dhark
    Craze Dhark 11 hours ago

    3am rn, this was on my recommended. I know. I dont know what going on with my life

  • oisiaa
    oisiaa 11 hours ago

    Ummmmm......nuclear secrets in a USclip video?? Just because he "doesn't know" if it's being used, this could be extremely sensitive technology.

  • jwgmail
    jwgmail 11 hours ago

    centrifugal clutches are used in most scooters. on a motorcycle you shift gears.

  • Quinn Reynolds
    Quinn Reynolds 11 hours ago

    Why don’t more people use those plastic vice grips?

  • aymon verheij
    aymon verheij 11 hours ago


  • Ah
    Ah 11 hours ago +1

    i really wanted to watch this cus the topic seemed interesting but your commentary and narration is so bad, and its extremely annoying how you kept interrupting the dude you were interviewing basically.

  • kopiledon
    kopiledon 11 hours ago

    Rocket scientist pfffffft! Compliant mechanism engineer rules.

  • Definitive Gaming
    Definitive Gaming 11 hours ago

    Wait, so you’re telling me that nukes don’t have a do not disturb?

  • Colin MacKenzie
    Colin MacKenzie 11 hours ago

    OMG!!!!! I am so onto this Thank You Thank You Thank You for giving me the means to help a friend

  • jeddak
    jeddak 12 hours ago

    Amazing. Fantastic technology.

  • Laurence Bell
    Laurence Bell 12 hours ago

    "...and requires lubricant."

  • Poachedshell
    Poachedshell 12 hours ago

    i guess the ipad pro is good

  • Abbreviated Reviews
    Abbreviated Reviews 12 hours ago +1

    I was thinking the whole time how I'd like to 3D print some of this stuff and then he's like "here you can print these and PLA". Awesome.

  • Eman Mann
    Eman Mann 12 hours ago

    Very commonly used on cheaper musical keyboards, replacing the separate hinge and spring found in the traditional mechanical design. In this case each octave can be molded as two seperate black vs. white key assemblies.

  • learners learners
    learners learners 12 hours ago

    Bend it like

  • Marco Aurélio Lima do Nascimento Junior

    wow that is pretty awesome!!

  • Fresh guac
    Fresh guac 12 hours ago

    what about metal fatigue

  • Entropy Spawn
    Entropy Spawn 12 hours ago

    Hi, V-Sauce wannabe, this was actually a cool video, but, maybe next time don't lean so hard on youtube's recommendation system maybe?

  • Joshua Keddie
    Joshua Keddie 12 hours ago

    This new Aphex Twin song is great

  • Pedro Silveira
    Pedro Silveira 12 hours ago

    aren't this machines more exposet to fatigue rupture?

  • Jesse Grossbohlin
    Jesse Grossbohlin 12 hours ago

    This is so cool.

  • Captainllama
    Captainllama 12 hours ago

    #6 Proportions. No. The *_dimensions_* are reduced. But it's not a "p".

  • hentai nat
    hentai nat 12 hours ago

    I need a reality check, these are too trippy.

  • Antonio Garofalo
    Antonio Garofalo 13 hours ago

    even protein structure is flexible and one can consider a protein a tiny compliant machine. evolution selected this kind of machines for the advantages you have mentioned. easy to build/synthetize, "low price" in term of atoms, performance

  • iKillborn2kilNOE
    iKillborn2kilNOE 13 hours ago

    "My friend" physics girl hmmm😏

  • Billy Joe
    Billy Joe 13 hours ago

    Looks like youtube doesn't mind abstract pornography :)

  • Mark Maurer
    Mark Maurer 13 hours ago

    Umm, if a break in is getting a police helicopter, you should probably move. If not to get away from the insane criminals you need a helicopter to stop, then to get away from the super militarized police.

  • Evgeniy Zakutin
    Evgeniy Zakutin 13 hours ago

    Apple Butterfly Mechanism Keyboard

  • de0509
    de0509 13 hours ago

    One thing it probably wont do is efficiency due to hysteresis losses

  • James Johnson
    James Johnson 14 hours ago

    Looks cool and all, but I'm sure Uri Geller would beg to differ! hahaha

  • SymbolicDeathwish
    SymbolicDeathwish 14 hours ago

    Where can i get one of those elephants?!

  • Paul Mares
    Paul Mares 14 hours ago

    Bender Rodriguez agrees 👍

  • Samuel Vidal
    Samuel Vidal 14 hours ago

    This is subliminal advertising for iPhone 6 ^^

  • Zoutepoel
    Zoutepoel 14 hours ago


  • Inspector Steve
    Inspector Steve 14 hours ago

    I think physics girl is more than just a friend.

  • Modern Assassin
    Modern Assassin 14 hours ago

    You can 3D print it.

  • Alex McCabe
    Alex McCabe 14 hours ago +1

    20,000 BC: Tools are good
    200 BC: Basic machinery is good
    1100 AE: Precise machinery is good
    1700 AE: Replaceable parts in precise machinery is good
    2020 AE: Tools are good, if they are flexible

  • kinetic stop motion studio

    U mean the iPhone 6 plus?.......

  • Snigginz
    Snigginz 14 hours ago

    Wow, this was a really interesting video, learned something new today!

  • Fred Derf
    Fred Derf 15 hours ago

    Umm, springs have been around for a few years now...

  • Regnar Ex DoomerX
    Regnar Ex DoomerX 15 hours ago

    What about metal fatigue and break down of crystalline structures?
    Does bendychines hold up better or worse than hinges, bearings and coiled springs?

  • Harsh Todarmal
    Harsh Todarmal 15 hours ago

    Who was the girl?

  • Sporting1210
    Sporting1210 15 hours ago

    .Fry: Bender, this has nothing to do with you.
    Bender: That's impossible!

  • Livin That Life
    Livin That Life 15 hours ago

    guy should hit up #Vsause to get these in the #CuriosityBox

  • Commander Shepard
    Commander Shepard 15 hours ago

    Ok USclip, i clicked it. You're happy now?

  • dasKeks28
    dasKeks28 15 hours ago

    Regarding SimpliSafe: "The system is monitored 24/7 by professionals". So strangers are watching my webcam all the time? WTF?

  • bagus prasetio
    bagus prasetio 15 hours ago

    i thought the thumbnail was something else at first

  • Patrick Calija
    Patrick Calija 15 hours ago

    Since nuclear weapon systems are badly outdated in the US, I doubt this is used... usclip.net/video/1Y1ya-yF35g/video.html

  • relentlessmadman
    relentlessmadman 15 hours ago

    If you have to wear a suit to visit Utah No wonder I don't want to go back!

  • Lucian Mihail
    Lucian Mihail 15 hours ago

    Excellent episode, bravo and thanks!

  • John Rambo
    John Rambo 16 hours ago

    Please make a Pipe Wrench for 1" & 2" pipe. Please. For the love of god

  • Chris Vijay
    Chris Vijay 16 hours ago


  • That guy who cannot abide

    I'm somewhat surprised that the DoD doesn't have some type of security umbrella over some of this.

  • Dejan Kostic
    Dejan Kostic 16 hours ago

    are gpus and cpus gona get cheeper if they use this technology?

  • Andrew Arrachie
    Andrew Arrachie 16 hours ago +1

    Annoying voice, you didn't even let the inventor to finish his phrases... lame "wanabe" . . .

  • Andrew Arrachie
    Andrew Arrachie 16 hours ago +1

    The inventor was pretty badass, your questions, not so much. You lack modesty , a very valuable trait for an interviewer . . .

  • gadswez
    gadswez 16 hours ago

    I can see its potential for new kind of toys.

  • Srdjan TrAiL
    Srdjan TrAiL 16 hours ago


  • Yasin Hasan
    Yasin Hasan 16 hours ago

    iphone 6

  • Maethen Dias
    Maethen Dias 17 hours ago

    bender would love this video :y

  • Green Papajas
    Green Papajas 17 hours ago

    I love this prof 👍

  • I have platinum depression

    I thought the thumbnail was sexy time.

  • Kristaps Blomkalns
    Kristaps Blomkalns 17 hours ago


  • labber
    labber 17 hours ago

    these selfie shoots are so annyoing, we dont need to see your face when you put your finger in the wrench

  • k moods
    k moods 17 hours ago

    i kept seeing this video in my feed over the past several days... finally decided to click it. really cool stuff here...

  • LifeFull11
    LifeFull11 17 hours ago

    Awesome video! Thank you very much! Incredible tech!

  • Johnnie Guitar
    Johnnie Guitar 18 hours ago

    Polypropylene plastic ???

  • Doomples
    Doomples 18 hours ago


  • Mal
    Mal 18 hours ago

    iPad Pro 2018: It's show time

  • CaesarsSalad
    CaesarsSalad 18 hours ago

    I would have liked them to try to bend the titanium hinge in another direction. As comparison.

  • Andoxico
    Andoxico 18 hours ago

    so with the compliant mechanism clutch you could make a manual transmission that has no clutch pedal?

  • Garth Algar
    Garth Algar 18 hours ago

    Hahaha. Don't know what happens? Speculate sir.

  • Edward st.antoine
    Edward st.antoine 18 hours ago


  • Davin Yap
    Davin Yap 18 hours ago

    We should be funding more of these kind of research tho

  • Rhonnie Allan
    Rhonnie Allan 19 hours ago

    Did anyone else notice some Chemistry there with Physicsgirl?

  • necrucifer elemangel
    necrucifer elemangel 19 hours ago

    Finally! Geometry at full potential!

  • Gorilla Swirl
    Gorilla Swirl 19 hours ago

    I DIDNT CONSIDER MYSELF A GREAT ENGINEER, but with with my practical experience, this stuff is really basic and already widely used in industry, no one should be too excited about this video. this type of stuff has been largely in practice for at least the past 20 years, im a little confused on why this was displayed as something new and special?????????

  • Paul Jordan
    Paul Jordan 19 hours ago

    I always wondered how that clutch works in a chain saw

  • E_M_E_T
    E_M_E_T 19 hours ago

    I never had any doubt about the performance and simplicity of these mechanisms, but I was always very skeptical about their durability. Take the titanium hinge, for example. I was impressed by the durability of the plastic grabber, but metals are a completely different story. Metals bend and permanently keep their new metallic shape. How many times can that hinge go from -90 to 90 and back until the metallic bonding of the titanium permanently breaks down? More importantly, how does one test its strength once it is in use? I don't want to see that hinge used on an important satellite in outer orbit if we have no way of making sure it is properly maintained. Machines with separate parts show symptoms of particular pieces becoming worn out, but a mechanism made up of only one piece doesn't.

  • Pietro Del Franco
    Pietro Del Franco 20 hours ago

    That’s just a freaking spring though..

  • Ossobuko
    Ossobuko 20 hours ago

    he has a funny giggle.

  • lostn65
    lostn65 20 hours ago

    looking at the thumbnail I keep seeing two people having sex.

  • Juancholoco
    Juancholoco 20 hours ago +1

    I had the same face as the professor every time he was interrupted lol.

  • Hermentotip
    Hermentotip 20 hours ago +1

    *I am Bender, please insert girder*

  • Rushi
    Rushi 20 hours ago

    Wow, mechanism is really interesting

  • Asen Tahchiyski
    Asen Tahchiyski 20 hours ago +1

    Bender Bending Rodriguez likes this

  • erik61801
    erik61801 20 hours ago

    damn buddy those veneers stick out like youre bugs bunny 🤦‍♂️

  • George Washington
    George Washington 20 hours ago

    he had my attention when he mentioned my home state

  • Genroy Noisis
    Genroy Noisis 20 hours ago

    7:50 is just so unreal.

  • YK D
    YK D 21 hour ago

    Hhhhh Bunch of Stupids

  • Rex Holes
    Rex Holes 21 hour ago

    Airplanes bend

  • xenochaosxc
    xenochaosxc 21 hour ago

    Some cool stuff, some theory, some NASA bs...everything I expect from this channel.

  • ly Ari
    ly Ari 21 hour ago

    so iPad Pro 2 are better iPad ?

  • TheFalconJetDriver
    TheFalconJetDriver 21 hour ago

    These devices are great catalyst for thinking about new ways to do things. However my problem with these devices they have very low cyclical
    Properties. Ie built in failure rate for things such as switches in automobile windows. Ford, GM, and Chrysler want things to fail in a timely manor.
    After all if they lasted for ever who would buy replacements?
    Especially for consumers items. For a one time device like a nuclear bomb I am all in.
    Seeing this video reminds me of the wizard of OZ movie! They want you to see one thing but not what it really is.

  • Justin Boy
    Justin Boy 22 hours ago

    Research Flat Earth

  • draunt7
    draunt7 22 hours ago

    Mechanically compliant engines?

  • flash flood99
    flash flood99 22 hours ago

    What about Scissors?