Why Machines That Bend Are Better

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


  • Deuce Moncura

    Deuce Moncura

    Hour ago

    I am pretty glad to see that there are very few dirty jokes in the comments of this video. And this comment just backfired on me, didn't it?

  • Μιχάλης Αρ.

    Μιχάλης Αρ.

    4 hours ago

    I 've learned so many things from you!

  • Durbar Show

    Durbar Show

    6 hours ago


  • E&A Productions

    E&A Productions

    8 hours ago

    soooo... what your saying is that the iphone 6+ was actually good???

  • Rainbow Zeebra

    Rainbow Zeebra

    12 hours ago

    this video should have been named "how to arm nuclear weapons" to get more views

  • joecugo


    17 hours ago

    Simplisafe is garbage

  • Fresco


    20 hours ago

    The elephant sh#t broke my mind. Thanks.

  • Not A Sith Lord

    Not A Sith Lord

    21 hour ago

    Simplisafe is an unreliable product that you don't want to rely on for your home security. Please hire a security professional to install a hardwired system or approved UL/ULC wireless system in your home. - A security technician.

  • Mike Bevins

    Mike Bevins

    22 hours ago

    In your little "Physics girl" cameo you look disheveled almost like if you just had sex ! Just saying

  • Beef Jerky

    Beef Jerky

    23 hours ago

    Why is Veritasium so interesting!

  • C1N3M4T1x


    Day ago

    9:17 that already exists🤔

  • Pepeijn Hazelhof

    Pepeijn Hazelhof

    Day ago

    Lot of plastics how about metals

  • Ostravak


    Day ago

    How they worked out material fatigue?

  • EpicEpidemic


    Day ago

    #9 "Private"

  • Yawg moth

    Yawg moth

    Day ago

    Woah, dude has greys in his beard now. Where has the time gone?



    Day ago

    For 3D printing, what plastic would be best? PLA is not very flexible I know

  • Jari Fuller

    Jari Fuller

    2 days ago

    very cool...thx

  • Fharish Ahmed Clips

    Fharish Ahmed Clips

    2 days ago

    Most Cringe moment 7:56

  • Ricky Downhill - RDH

    Ricky Downhill - RDH

    2 days ago

    This is all very cool, but that microscopic stuff is nuts!!

  • M


    2 days ago

    Yea because we have not enough plastic on earth xD

  • Chris


    2 days ago

    These guys at 1:37

  • crazyassailant


    2 days ago

    At about 3:44, you ask the question about how long the switch piece lasts. He referenced fatigue testing which got over a million cycles before failure. Is there any kind of metric or estimation to what that equates to in terms of time in real-world use? How long would that be expected to last?

  • Jenn Hoff

    Jenn Hoff

    2 days ago

    Wow, this guy is amazing!!!

  • Kanishk Gang

    Kanishk Gang

    2 days ago

    The thumbnail is demonitized.

  • Teerin Varongchayakul

    Teerin Varongchayakul

    2 days ago

    this is the coolest tech ever!

  • Dylan Dreisbach

    Dylan Dreisbach

    2 days ago

    Time to get my 3d printer set up again! They are quite cheap if you don't mind being on your own setting it up and troubleshooting and calibrating.

  • t guanni

    t guanni

    2 days ago

    So damn cool...

  • fernando jaimes

    fernando jaimes

    2 days ago

    my reaction to this is just... :O WoW, awesome

  • Victor Sebastian S.

    Victor Sebastian S.

    2 days ago

    just just.. instant subscribe

  • Charterf 7

    Charterf 7

    2 days ago

    Ipad 11 bend

  • ufewl


    2 days ago

    just a realty bad video a waste of time, wont be subscribing

  • ufewl


    2 days ago

    What the fukc is going on at 6.07 we cant see what is going on or what she does so for someone who explains science it is fukcing uselss

  • Abdel Hakim

    Abdel Hakim

    2 days ago

    i can watch your videos all day long one of my favorite USdownloadrs

  • Luis Molina

    Luis Molina

    2 days ago

    Bender likes this video.

  • Heaven Josiah

    Heaven Josiah

    2 days ago

    Man, if that can work with the electricity conducting paint, it will be crazy awesome

  • Delphin Outfits

    Delphin Outfits

    2 days ago

    complaint mechanism means soft transition, more flexible, viable

  • archisaurus


    2 days ago

    What an incredible video. Thank you

  • Post Cancel

    Post Cancel

    2 days ago

    I want that Elephant rump!

  • Дмитрий Д

    Дмитрий Д

    3 days ago

    I should mention that you have compliant mechanism. It is buttons in your computer mouse. Quite old and proved design of buttons.

  • Charles Darwin

    Charles Darwin

    3 days ago

    So that Atom bomb arming mechanism was another WATCHTIME-BAIT? Came after seeing HOW TO VIRAL video.

  • Schrödinger


    3 days ago

    This guy has the best job in the entire world I won't to be him

  • Runn Jeet

    Runn Jeet

    3 days ago

    Your incredible research methods made me say this, Can I work under you as an assistant sometime?

  • MrFilipang


    3 days ago

    Why isn this industry standard??

  • keyman21


    3 days ago

    TIL im better than straight people

  • Vinayak Halekoti

    Vinayak Halekoti

    3 days ago

    Backlash also can see in clearence between rack and pinion.

  • Ismael Castillo

    Ismael Castillo

    3 days ago

    Wuoo so many "WTF" moments!

  • Anton Chigurh

    Anton Chigurh

    3 days ago

    Bender? It’s Bender 😔.

  • Had to wait 90 days to change my name

    Had to wait 90 days to change my name

    3 days ago

    Hear that ipad pro?

  • daniel I

    daniel I

    3 days ago

    but i am straight though

  • ChafradorGaming


    3 days ago

    Bite my shiny metal ass.

  • hello there good guy!

    hello there good guy!

    3 days ago

    dr banner?

  • KB


    3 days ago

    why the thumbnail look like two people having sex

  • jhkkjhk


    4 days ago

    Thumbnail looks like an Aphex Twin logo

  • SKMC69


    4 days ago

    I grew up in the 70s and 80s and knew sooooo many people who died in car crashes. I wonder how many lives Crumple Zones have saved in the modern era?

  • Mike Volume

    Mike Volume

    4 days ago

    “Why Machines That Bend are Better” Robot Amon seethes.

  • D W

    D W

    4 days ago

    Absolutely AMAZING stuff! I could have watched this stuff for hours.

  • SkhairKro89


    4 days ago

    Samsung missed a major opportunity to sponsor this video with their Flagship Folding Phone!

  • Steve C

    Steve C

    4 days ago

    I suspect such compliant mechanism could make a better artificial knee joint.



    4 days ago

    This was invented by an Indian professor

  • Enderwarrior X

    Enderwarrior X

    4 days ago

    Remind me again what the purpose of the satisfying clicky thing is, why you’d need that hinge and how the last mechanism keeps nuclear arms safe from earthquakes?

  • haechi21


    4 days ago

    I want that elephant.

  • Lucas Carman

    Lucas Carman

    4 days ago

    I want to see more of the steel clutch. That was the coolest thing to me

  • Nouche


    5 days ago

    Can we agree upon the ambiguity of the thumbnail, please?

  • Paddy


    5 days ago

    mind blown

  • James Andrew McNamara

    James Andrew McNamara

    5 days ago

    So cool to learn about complaint mechanisms!

  • Michael Lopez

    Michael Lopez

    5 days ago

    you should show some statics analysis for these mechanisms, and then compare them to traditional variants such as hinges and pulleys!

  • Coding Tunes

    Coding Tunes

    5 days ago

    If you pause at 4:20 you realize these guys have no idea where their plastic comes from.

  • Analytical Reactor

    Analytical Reactor

    5 days ago

    At 9:06 you present a clutch which is OK, but you avoid saying "centrifugal clutch." AND, you present it to your "physics girl," who likewise does not use the word "centrifugal." WTF is going on here? Rather than pretending that this is a new invention (thus insulting everyone who had a go-cart when he was a kid), you could have been honest and discussed its advantages/disadvantages with typical in-use clutches.

  • ryan mundell

    ryan mundell

    6 days ago

    this reminds me of a spring

  • Duderobi Patschie

    Duderobi Patschie

    6 days ago

    yes bending is better this thought also Samsung

  • MrWolf


    6 days ago

    1 million repetition cycles, damn

  • Rei Mici

    Rei Mici

    6 days ago

    Never witnessed such a genius yet simple idea

  • StobbyEnduroMX


    6 days ago

    I'm sad that you never explained exactly how it was that this engineers nuclear safety device worked.

  • ุ

    6 days ago

    *Machines that bend are better* ( ͡° ͜ʖ ͡°) Think i can agree on that

  • Harbinger


    6 days ago

    I went to BYU but I studied Philosophy...

  • Jacob Moorman

    Jacob Moorman

    6 days ago

    How do they age?

  • Richard Parker

    Richard Parker

    6 days ago

    About 54 seconds in you can see a Prusa 3D printer in the back to the Right. Very cool.

  • Stoney Lonsome

    Stoney Lonsome

    6 days ago

    Why are bending machines better- because Bender said so "I said bending is better!"

  • Legion


    6 days ago

    Everybody knows that Bender is great.

  • Bob Dillahunty

    Bob Dillahunty

    6 days ago

    How can I personally profit from this financially even though I did nothing whatsoever to contribute to it?

  • multiplexed


    6 days ago

    Springs and centrifugal clutches are not news... even if they're onesies.

  • John Smith

    John Smith

    7 days ago

    Many Tupperware products have living hinges.

  • Serge Goncharov

    Serge Goncharov

    7 days ago

    круче чем последний выпуск Дудя

  • Cestarian Inhabitant

    Cestarian Inhabitant

    7 days ago

    This... This is revolutionary...

  • Jason Willows

    Jason Willows

    7 days ago

    "This makes sure that no random vibration, like earthquakes, can arm nuclear weapons" Because god knows how many times the earthquakes keep on guessing passwords.

  • Bloginton Blakley

    Bloginton Blakley

    7 days ago

    Glad I watched this.

  • The Cereal Guy

    The Cereal Guy

    7 days ago

    That's honestly very interesting

  • Randy Bobandy

    Randy Bobandy

    7 days ago

    iPhone 6 disagrees.

  • Роман Белоусов

    Роман Белоусов

    7 days ago

    О боже мой. У нас тут изобретение велосипеда.

  • 오재화


    7 days ago

    See ipad is not bad Lolololololol

  • Jake Kang

    Jake Kang

    7 days ago

    This video reminded me once again about the greatness of "Occam's Razor." Simple is the best always.

  • Leocat Bestcat

    Leocat Bestcat

    7 days ago

    1:44 This thing looks like the Waterwraith run!!!

  • Thomas Neal

    Thomas Neal

    7 days ago

    "Why Machines That Bend Are Better" written by Bender B Rodriguez

  • joseph dragojevich

    joseph dragojevich

    3 days ago

    +Brandon LaBianco idk maybe cause this isnt reddit lmao

  • Tit Cheese

    Tit Cheese

    6 days ago

    +Brandon LaBianco ik same!!!!🙊

  • Brandon LaBianco

    Brandon LaBianco

    7 days ago

    Why does this not have more upvotes. I browsed the comments just for this.

  • NovaMG


    7 days ago

    That elephant mechanism would be really good for earthquake protection for buildings



    6 days ago

    That mechanism was good for force in one direction, the X direction. For an earthquake you would need to handle forces for Z and Y as well.

  • Wray Gamma & His Gamma Rays

    Wray Gamma & His Gamma Rays

    7 days ago

    I am bender please insert girder

  • Zapped Cannon

    Zapped Cannon

    7 days ago

    Video: you know, tools that bend are better. Me: I know, I’ll make a bendy hammer! Video: um Me: holy mother-- my toe!!! Video: oops...

  • Zapped Cannon

    Zapped Cannon

    7 days ago

    +haselni thanks, that is very interesting. It seems that they are more shock adsorbent, and although I don't think they are the definition of compliant, they are very close.

  • haselni


    7 days ago

    Dead blow hammers are compliant, I believe.

  • EatableGaming & More

    EatableGaming & More

    7 days ago

    1:37 look at the background

  • Ghost LY

    Ghost LY

    7 days ago

    Aphex Twin?

  • Slykeren


    7 days ago

    could these devices not be used in folding phones instead of hinges?

  • Vlad Hardware

    Vlad Hardware

    7 days ago

    Moral of the Story: At the extremities, science is art!

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