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 • 4 871

  • SentinelPrimek
    SentinelPrimek 6 hours ago

    Wow, one of the most amazing things I've seen.

  • Nick Hurley
    Nick Hurley 6 hours ago

    I learned sooooo much here.

  • Oengus Fearghas
    Oengus Fearghas 6 hours ago

    While I do appreciate and understand the benefits of flex in some applications there are some others where it is a poor design choice. Living hinges as an example.

  • Marko Medenčić
    Marko Medenčić 9 hours ago

    can you make a camera gyroscope like this?

  • Chase Gwaltney
    Chase Gwaltney 10 hours ago

    Professor SOO cool helping make nuclear weapons. He is a looser. Also those vice grips are garbage.

  • What, me worry?
    What, me worry? 11 hours ago

    Most Intriguing!! Are these student ideas?

  • Jordan Sugarman
    Jordan Sugarman 11 hours ago +1

    I can definitely see the appeal of using these in spacecraft applications. High-precision movement with no need for lubrication.

  • James Sicat
    James Sicat 12 hours ago

    Metal fatigue?

  • joseph sebastian
    joseph sebastian 12 hours ago

    9:44 centrifugal clutch. It already exist but not like this.

  • FBI
    FBI 12 hours ago +1


  • Awfulmasterhat
    Awfulmasterhat 13 hours ago

    this is 100% cooler than I thought it would be

  • Niidea1986
    Niidea1986 13 hours ago

    the first thing that came to my mind was the lauf gravel fork

  • Duck King
    Duck King 14 hours ago

    i remember the old saying of japanese when they make a katana long long time ago, "bend is better than break". now i understand.

  • corisco tupi
    corisco tupi 16 hours ago

    11:47 Vsauce moment

  • Trust in Dog
    Trust in Dog 16 hours ago

    Hah. I got the elephant one.

  • DSRReacts
    DSRReacts 16 hours ago +2

    1 pound force results in 30 pounds of force

    • IceDevias
      IceDevias 8 hours ago

      in practice y talkin aboooout.......?

  • None Ofyerbisness
    None Ofyerbisness 16 hours ago

    Wrong. Trebuchet > catapult.

  • Mike O'.
    Mike O'. 17 hours ago +1

    Well, I hope so.
    It'd be a lot better than 0000

  • Imnotgoing Sideways
    Imnotgoing Sideways 17 hours ago

    Who else was NOT fooled by that elephant. =^-^=

  • DoomRater
    DoomRater 18 hours ago

    So these are the kinds of mechanisms we'd want in a permanent data archive of the internet and multimedia culture.

  • Evade & Ignite
    Evade & Ignite 18 hours ago

    These Aphex Twin videos just keep getting weirder.

  • Gastel
    Gastel 18 hours ago

    Aphex Twin brought me here... by accident.

  • Cynical Optimist
    Cynical Optimist 18 hours ago


  • dwavenminer
    dwavenminer 20 hours ago

    At first I was a little skeptical, but then I rememberd about the huge boost in both energy efficiency and durability that was brought to walking robots by simply adding elastic tendons to thier legs...

  • Bear up
    Bear up 20 hours ago

    Great idea problem is that they will be made to fail so they will need to be replaced more often.

  • Sploit Bot
    Sploit Bot 21 hour ago

    My phone works better when bent!

  • Brain in a Vat
    Brain in a Vat 21 hour ago

    Brilliant! This is the height of what the internet is good for! 10/10

  • adam conard
    adam conard 22 hours ago

    cool and all, but you showed nothing useful that would sell. i sure haven't seen those pliers at work yet. and nukes are safed with their neutron generators so ...not giving a free like on this one yet

  • Exastiken
    Exastiken 22 hours ago

    How is the lifetime of compliant mechanisms vs conventional mechanisms?

  • evgiz0r
    evgiz0r 22 hours ago

    cool! Time to try these on my 3d printer :)

  • Aleksej Zavodilov

    Awesome thanks!!

  • Valon Selimaj
    Valon Selimaj Day ago +1

    "Im 40% wire"

  • Robert Jones
    Robert Jones Day ago

    Makes sense considering that most living things in the animal kingdom are basically a gestalt of compliant mechanisms.

  • Colby V
    Colby V Day ago

    Are you happy youtube??? I finally clicked it.

  • Adam Brzozowski
    Adam Brzozowski Day ago

    Is it possible to print out a titanium body suit?

  • Bluurrg
    Bluurrg Day ago

    Are you happy TVclip recommendations? I watched it

  • TheCommon Man
    TheCommon Man Day ago


  • Jamie Taylor
    Jamie Taylor Day ago

    this is the future

  • Jamie Taylor
    Jamie Taylor Day ago +1

    THIS dude that invented it is a GENIUS!!

  • Jamie Taylor
    Jamie Taylor Day ago

    but are they recyclable?

  • George Grund
    George Grund Day ago

    ya but there's one big difference and that is the vise grips can stay closed


    This is absolutely fascinating! Thank you!

  • Chad Graham
    Chad Graham Day ago

    11:25 the moment when you realize your TVclip rabbit hole probably just showed the locking mechanism for nuclear weapon systems. Nothing to see here @Homeland Security...

  • fanobennemsi
    fanobennemsi Day ago

    I have SimpliSafe.

  • GAR mind DFKutulas

    Nukes don't exist. Great video though.

  • 227Morgan
    227Morgan Day ago

    EVERYONE Please go to movetoamend.org and sign the petition to have a constitutional amendment saying 1) corporations are NOT people and 2) money is NOT free speech. The video "Legalize Democracy" here on TVclip (30 min) does a good job of explaining why this is step ONE to solving ALL of the major issues confronting the average people struggling to get by and have their voices heard in a corrupt political system. Things look bad now, but we can FIX it all! Get behind the movement!

  • Marian Buduroi
    Marian Buduroi Day ago

    a new friction model can be used in cars

  • jon elias
    jon elias Day ago

    She is more of a friend isnt she?

  • Sleepy
    Sleepy Day ago +1

    Build an engine now

  • Tobytronic Cat
    Tobytronic Cat Day ago

    The 'compliant centrifugal clutch' old hat. Look at R/C model cars with i/c engines. These one-piece clutches are at least two decades old.

  • Hardlydan
    Hardlydan Day ago

    Great video, I was utterly enthralled whist watching.

  • Vaat Dafaak
    Vaat Dafaak Day ago

    that was awesome and all...but how do you 3d print titanium?

  • Sourcen
    Sourcen Day ago +1


  • Eemeli Hietala
    Eemeli Hietala Day ago

    Why are you in my recommended?

  • Alystas
    Alystas Day ago

    Ok i'm scared now, knowing nuclear safety depends on something that fragile and prone to premature wear and tear :$

  • Dan May
    Dan May Day ago

    The educaishon in your country is going down, if those almost useless things can attract people.

  • Mark Melni
    Mark Melni Day ago +1

    Thank you. I am a subscriber and I am also an inventor. We were featured on Shark Tank and that opened doors to engineering and R&D experts that I never would have imagined. This episode has put me in the right direction for advancement in our Solar Connector. I love what you do. www.melni.org

  • lukloek
    lukloek Day ago

    Very good video! this is exactly the content i hope for in youtube channels like these!

  • I want to die
    I want to die Day ago


    That’s a great price

  • Mr-Bledi
    Mr-Bledi Day ago +1

    7:49 though this totally destroys theory of david guetta that he mentioned on his song when he says: Stone-hard as bulletproof glass i am titanium

  • ramon den Boer
    ramon den Boer Day ago

    but plastic is bad for the

  • mysmileisfake
    mysmileisfake Day ago

    That's so cool, definitely learn something new today.

  • dan taylor
    dan taylor Day ago

    more plastic to fill up our already clogged oceans..............................great stuff.

  • Is Thuku
    Is Thuku Day ago

    You dont have to be in the shot man. Just film the guy

  • Tom Arabia
    Tom Arabia Day ago

    I can think of a better way to guarantee that nuclear weapons don't ever detonate.

  • Spidey Parker
    Spidey Parker Day ago +4

    *Reads Title*
    Me : You know why ( ͡° ͜ʖ ͡°)

  • Franco VF
    Franco VF Day ago

    Fine youtube, i'll watch...

  • Pepper Spray
    Pepper Spray Day ago

    Seems like a way to make durable tools disposable.

  • Cavare Envius
    Cavare Envius Day ago

    So Bender was right all along. He is the coolest there is because he is a bending unit.

  • Leonard Greenpaw

    I have trouble accepting that these are resilient and durable especially with metal, which becomes brittle when bent repeatedly

  • Giryo_san
    Giryo_san Day ago

    i got the elephant thing right /0o0/

  • Legenden27
    Legenden27 Day ago +1

    Phil swift is wayyyyyyyyy ahead of this guys, he got Flex Seal, Flex Shot, Flex Tape and Flex Glue products.

  • JanniMurphy
    JanniMurphy Day ago

    this guy is like Elon Musk's dad

  • Dio Vidi Putra
    Dio Vidi Putra Day ago

    For once, thanks TVclip....I'm just a curious student.

  • Torgul
    Torgul Day ago

    Cool stuff thx :)

  • Nathan
    Nathan Day ago +1

    Except that when these parts break, you're absolutely fucked. You have to replace the entire part, not just a single tiny part.

  • Arthur Jackson
    Arthur Jackson Day ago

    Shut up and let the Prof. talk please.

  • rollout the battle rapper

    9:24 making sure u get a good shot while others are having orgasm.

  • rollout the battle rapper

    the trunk moves relative to the dang elephant... is it gonna go this way or that way??? IT DOESNT NOTHING>>> rhetorical scam.

  • Jeet Thakwani
    Jeet Thakwani Day ago

    can SimpliSafe bend?

  • yongsaiX
    yongsaiX Day ago

    only one word: Witchcraft

  • Marshall Kell
    Marshall Kell Day ago

    This satisfied my brain fuzzies.

  • Joseph Kreifels II

    I don't know why this was recommended, but it's extremely interesting.

  • SanraS Uzumaki
    SanraS Uzumaki Day ago +2

    Wait, I'm too stupid to understand how that prevents arming anything, explain please.

  • Handy Menagerie
    Handy Menagerie Day ago

    From the standpoint of somebody who likes to service and fix things if a hinge or other part on my vice grips goes bad, I can replace the pin, or even make a new one in my shop. If a hinge breaks on his model the whole thing is trash. I don’t know that I like that in emergency situations. You know, like Apollo 13.

  • Audrey Norman
    Audrey Norman Day ago

    awesome video.

  • Roman Troshkin
    Roman Troshkin Day ago

    Nanomachines, son!

  • Dercsenyi Laszlo

    NSFW content!

  • Luka Radulović
    Luka Radulović Day ago

    This is like saying "I'm gonna make my own TVclip channel, with Blackjack and hookers."

  • Lucas de Abreu
    Lucas de Abreu Day ago

    so he makes integrated springs. wow.

  • albird burger
    albird burger Day ago


  • Scary T
    Scary T Day ago +1


  • Ryan
    Ryan Day ago

    FINE youtube ill watch the video. christ.

  • Mr. Valtiel
    Mr. Valtiel Day ago

    6:06 he plays that sound everytime he sticks hid dick up her ass

  • Tyler Hunt
    Tyler Hunt Day ago

    9:07 It's called a centrifugal clutch

  • Ennar
    Ennar Day ago

    I'd like to print out that one switch
    Edit: Printed one in white PLA, and it came out really nice

  • harrod harrod
    harrod harrod Day ago

    Wow, this is so cool. One question for the two titanium "hinges", especially the first one that's supposed to be used on solar panels. Since it's probably going to be in one of the compressed positions for extended periods of time, isn't there increased risk of the material weakening/failing in the point of greatest stress?

  • JaysonSR
    JaysonSR Day ago

    I was able to figure out the elephant rather quickly. Unfortunately, my reverse engineering is as good as my creativity is bad.
    As for his work, this guy is absolutely amazing! I would've figured bendy stuff would just fail too quickly to ever be effective in the long run. Challenging preconceived notions like that are how humanity can keep advancing.

  • boxoflostcauses
    boxoflostcauses Day ago

    This was so freaking cool man, I love this channel so much