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


  • crazyassailant


    Il y a 41 minute

    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

    Il y a 2 heures

    Wow, this guy is amazing!!!

  • Kanishk Gang

    Kanishk Gang

    Il y a 2 heures

    The thumbnail is demonitized.

  • Teerin Varongchayakul

    Teerin Varongchayakul

    Il y a 6 heures

    this is the coolest tech ever!

  • Dylan Dreisbach

    Dylan Dreisbach

    Il y a 9 heures

    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

    Il y a 11 heures

    So damn cool...

  • fernando jaimes

    fernando jaimes

    Il y a 12 heures

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

  • Victor Sebastian S.

    Victor Sebastian S.

    Il y a 16 heures

    just just.. instant subscribe

  • Charterf 7

    Charterf 7

    Il y a 16 heures

    Ipad 11 bend

  • ufewl


    Il y a 16 heures

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

  • ufewl


    Il y a 16 heures

    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

    Il y a 17 heures

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

  • Luis Molina

    Luis Molina

    Il y a 17 heures

    Bender likes this video.

  • Heaven Josiah

    Heaven Josiah

    Il y a 18 heures

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

  • Delphin Outfits

    Delphin Outfits

    Il y a 18 heures

    complaint mechanism means soft transition, more flexible, viable

  • archisaurus


    Il y a 19 heures

    What an incredible video. Thank you

  • Post Cancel

    Post Cancel

    Il y a 20 heures

    I want that Elephant rump!

  • Дмитрий Д

    Дмитрий Д

    Il y a 20 heures

    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

    Il y a 20 heures

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

  • Schrödinger


    Il y a 21 heure

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

  • Kazo0ie


    Il y a 22 heures

    Form, Typ, Prinzip - klassisch :)

  • Runn Jeet

    Runn Jeet

    Il y a jour

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

  • MrFilipang


    Il y a jour

    Why isn this industry standard??

  • keyman21


    Il y a jour

    TIL im better than straight people

  • Vinayak Halekoti

    Vinayak Halekoti

    Il y a jour

    Backlash also can see in clearence between rack and pinion.

  • Ismael Castillo

    Ismael Castillo

    Il y a jour

    Wuoo so many "WTF" moments!

  • Anton Chigurh

    Anton Chigurh

    Il y a jour

    Bender? It’s Bender 😔.

  • Had to wait 90 days to change my name

    Had to wait 90 days to change my name

    Il y a jour

    Hear that ipad pro?

  • daniel I

    daniel I

    Il y a jour

    but i am straight though

  • ChafradorGaming


    Il y a jour

    Bite my shiny metal ass.

  • hello there good guy!

    hello there good guy!

    Il y a jour

    dr banner?

  • KB


    Il y a jour

    why the thumbnail look like two people having sex

  • jhkkjhk


    Il y a jour

    Thumbnail looks like an Aphex Twin logo

  • SKMC69


    Il y a jour

    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

    Il y a 2 jours

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

  • D W

    D W

    Il y a 2 jours

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

  • SkhairKro89


    Il y a 2 jours

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

  • Steve C

    Steve C

    Il y a 2 jours

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



    Il y a 2 jours

    This was invented by an Indian professor

  • Enderwarrior X

    Enderwarrior X

    Il y a 2 jours

    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


    Il y a 2 jours

    I want that elephant.

  • Lucas Carman

    Lucas Carman

    Il y a 2 jours

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

  • Nouche


    Il y a 3 jours

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

  • Paddy


    Il y a 3 jours

    mind blown

  • James Andrew McNamara

    James Andrew McNamara

    Il y a 3 jours

    So cool to learn about complaint mechanisms!

  • Michael Lopez

    Michael Lopez

    Il y a 3 jours

    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

    Il y a 3 jours

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

  • Analytical Reactor

    Analytical Reactor

    Il y a 3 jours

    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

    Il y a 3 jours

    this reminds me of a spring

  • Duderobi Patschie

    Duderobi Patschie

    Il y a 3 jours

    yes bending is better this thought also Samsung

  • MrWolf


    Il y a 4 jours

    1 million repetition cycles, damn

  • Rei Mici

    Rei Mici

    Il y a 4 jours

    Never witnessed such a genius yet simple idea

  • StobbyEnduroMX


    Il y a 4 jours

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

  • ุ

    Il y a 4 jours

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

  • Harbinger


    Il y a 4 jours

    I went to BYU but I studied Philosophy...

  • Jacob Moorman

    Jacob Moorman

    Il y a 4 jours

    How do they age?

  • Richard Parker

    Richard Parker

    Il y a 4 jours

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

  • Stoney Lonsome

    Stoney Lonsome

    Il y a 4 jours

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

  • Legion


    Il y a 4 jours

    Everybody knows that Bender is great.

  • Bob Dillahunty

    Bob Dillahunty

    Il y a 4 jours

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

  • multiplexed


    Il y a 4 jours

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

  • John Smith

    John Smith

    Il y a 4 jours

    Many Tupperware products have living hinges.

  • Serge Goncharov

    Serge Goncharov

    Il y a 4 jours

    круче чем последний выпуск Дудя

  • Cestarian Inhabitant

    Cestarian Inhabitant

    Il y a 4 jours

    This... This is revolutionary...

  • Jason Willows

    Jason Willows

    Il y a 5 jours

    "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

    Il y a 5 jours

    Glad I watched this.

  • The Cereal Guy

    The Cereal Guy

    Il y a 5 jours

    That's honestly very interesting

  • Randy Bobandy

    Randy Bobandy

    Il y a 5 jours

    iPhone 6 disagrees.

  • Роман Белоусов

    Роман Белоусов

    Il y a 5 jours

    О боже мой. У нас тут изобретение велосипеда.

  • 오재화


    Il y a 5 jours

    See ipad is not bad Lolololololol

  • Jake Kang

    Jake Kang

    Il y a 5 jours

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

  • Leocat Bestcat

    Leocat Bestcat

    Il y a 5 jours

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

  • Thomas Neal

    Thomas Neal

    Il y a 5 jours

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

  • joseph dragojevich

    joseph dragojevich

    Il y a jour

    +Brandon LaBianco idk maybe cause this isnt reddit lmao

  • Tit Cheese

    Tit Cheese

    Il y a 4 jours

    +Brandon LaBianco ik same!!!!🙊

  • Brandon LaBianco

    Brandon LaBianco

    Il y a 4 jours

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

  • NovaMG


    Il y a 5 jours

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



    Il y a 4 jours

    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

    Il y a 5 jours

    I am bender please insert girder

  • Zapped Cannon

    Zapped Cannon

    Il y a 5 jours

    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

    Il y a 5 jours

    +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


    Il y a 5 jours

    Dead blow hammers are compliant, I believe.

  • EatableGaming & More

    EatableGaming & More

    Il y a 5 jours

    1:37 look at the background

  • Ghost LY

    Ghost LY

    Il y a 5 jours

    Aphex Twin?

  • Slykeren


    Il y a 5 jours

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

  • Vlad Hardware

    Vlad Hardware

    Il y a 5 jours

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

  • Kenneth Kustren

    Kenneth Kustren

    Il y a 5 jours

    A nutcracker ... One piece, in polymers... crazy !!

  • Romnick Cabaltera

    Romnick Cabaltera

    Il y a 5 jours

    Meanwhile, Drake got the most number of music awards this year and defeated Taylor Swift.

  • Rebel Quadron FPV

    Rebel Quadron FPV

    Il y a 5 jours

    How about the folding Galaxy?



    Il y a 5 jours

    I didn't realize how massively important this was. I knew of its existence... I've seen it in application on various devices for various reasons, just never knew to tag a name to it, and never thought of it as a such a revolutionary way of making moving parts. In fact I've always feared it breaking more easily like the lid on your toothpaste (a very simple compliant mechanism we've all grown accustomed to without knowing it)

  • Cafe Vampire

    Cafe Vampire

    Il y a 5 jours

    I'm gonna say it... The thumbnail looks like 2 spoons having sex

  • Nox Dei

    Nox Dei

    Il y a 6 jours

    Catapults bad. Trebuchets good.

  • Chris Dohr

    Chris Dohr

    Il y a 6 jours

    Link to the Thingiverse page with the designs in the video for anyone who wants to print some of the designs: www.thingiverse.com/BYU_CMR/designs

  • Wietepietepatat


    Il y a 6 jours

    its like magic with bending flexible materials!

  • Joe Stevenson

    Joe Stevenson

    Il y a 6 jours

    Can we not pretend that that plastic 'gripper' is in any regard better than a vice grip? That sort of stupid comparison makes it look like you;re full of shite when some of these advantages are very legitimate.

  • KingSlimjeezy


    Il y a 6 jours

    me papa's career revolves around this for jets. There becomes a point where no computer in the world can calculate those forces to a T but the principles remain the same - for practical purposes, even with an unlimited budget there are situations where knowledge of principle and experience of a lifetime of data an almost mystical intuition can be formed that can pick out flaws in computer models just by looking at them

  • Todd Howard

    Todd Howard

    Il y a 6 jours

    1:38 left side of the screen

  • TallFungus


    Il y a 6 jours

    they sent u a fleshlight

  • TVOGaming


    Il y a 6 jours

    11:48 hey vsauce Michael here

  • ErnestoStaccolanana


    Il y a 6 jours

    why do I see two people having sex in the thumbnail... I need help

  • HoaXeN Trinity

    HoaXeN Trinity

    Il y a 5 jours

    Hahahaha I noticed that too😂😂

  • Carl Du Plessis

    Carl Du Plessis

    Il y a 6 jours

    My girlfriend is flexible. She bends and I send. :)

  • Night And Day

    Night And Day

    Il y a 6 jours

    3d print with flexible plastic so good tools faster

  • ColinStuardMusic


    Il y a 6 jours

    ur a gay ass nerd .... good job with the books fools ... cry about it

  • Geoffrey J'zargo

    Geoffrey J'zargo

    Il y a 6 jours

    Thought I was being a moron in thinking the trunk wouldn't move.

  • Jasper Sergio

    Jasper Sergio

    Il y a 6 jours

    More access. Obviously, though I prefer a different type of bend XD

  • WCGwkf


    Il y a 6 jours

    While this is extremely interesting, these materials are bending like a paperclip. Everyone knows many materials can bend, just the right material and thickness will get you elastic deformation for the application you need. That's all this is but in a very cool configurations.