Why Machines That Bend Are Better

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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:
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



12 mar 2019




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Well, I guess it figures that Brigham Young University would be the epicenter of this research - heck, they've been working on compliant devices since the 1800s, in the form of their magic underwear! 😜
Fr0mDark2Light Klukkustund síðan
oh man that gripper would be really great for taking out stuck arrows in my field archery game
george 2 klukkustundum síðan
Your a bender.
Jacob Patrick
Jacob Patrick 2 klukkustundum síðan
WOW. Loved the video. Thank you.
jimvanm 2 klukkustundum síðan
I'm no engineer; I just kept thinking about fatigue. Is that something that can be handled predictably, in how the materials are produced? (i.e. the type of plastic or metal, the curing/forging process, etc). It just seems to me that all that flexing is going to wear things out eventually (although, perhaps the whole point is that "eventually" is a much longer time than it would be in a similar device produced with multiple parts). Regardless, that is mind-blowingly awesome. I'll bet we'll be seeing more and more of this sort of thing in all sorts of products.
Chupria 2 klukkustundum síðan
Just ordered mine from Ebay. Thank you.
Fred T
Fred T 3 klukkustundum síðan
Is this some engineering channel?
Ste Megsmagik
Ste Megsmagik 3 klukkustundum síðan
You made an absolutely boring topic interesting and fun! Teachers have something to learn from you!
protectnor 3 klukkustundum síðan
You and your "friend" physics girl look like you both just got out of bed...
jj a
jj a 3 klukkustundum síðan
So compliant mechanism is like a solid state🤔
jj a
jj a 3 klukkustundum síðan
Squeeze me😒😆
Todd F Wright
Todd F Wright 3 klukkustundum síðan
He said "...nuke-ye-lar weapons..." @ 11:31 Not nuclear. It hurts my nerd feelings to hear a smart person say nuke-ye-lar. :(
Med Otaku
Med Otaku 3 klukkustundum síðan
8 P's are pretty weak... Also, I counted more than 8.
Zen CaptureAll
Zen CaptureAll 3 klukkustundum síðan
Girom Christian Calica
Girom Christian Calica 3 klukkustundum síðan
compliant guns
Jimmy Nahlous
Jimmy Nahlous 3 klukkustundum síðan
incredible stuff!
My Thoughts
My Thoughts 4 klukkustundum síðan
Ok ISvid I watched this video , my god 1 whole week keeps commanding this video , ok cool thumbnail
Simonpeter Dalangpan
Simonpeter Dalangpan 4 klukkustundum síðan
We use the same principal with Pro RC Cars…
Nick vancleave
Nick vancleave 4 klukkustundum síðan
Anyone notice his element number is 42.0 lmao 420 he's hanging with Elon too much
shutemdwn 4 klukkustundum síðan
Proof that aliens exist.
David Dow
David Dow 4 klukkustundum síðan
Fine ISvid, I'll watch it
GravitySloth 5 klukkustundum síðan
*in Bender voice* Shut up, baby, I know it.
Chris Trotter
Chris Trotter 5 klukkustundum síðan
But such an incredible shame that this gentleman works for/represents BYU.
duf101101 5 klukkustundum síðan
That was cool.
Armuotas 5 klukkustundum síðan
They will defitinely have to work on the name though. It get's tedious after saying it three times, and anoying after five.
Funkky Monkey
Funkky Monkey 5 klukkustundum síðan
One issue, strength, so large car parts are out for the moment, but those computer components are cool
Weaboo Edgelord IV
Weaboo Edgelord IV 5 klukkustundum síðan
This is stupid
JQ Dan
JQ Dan 5 klukkustundum síðan
yo.... i feel like im getting punked or this is a hoax
Philip Raats
Philip Raats 6 klukkustundum síðan
how does the titanium not melt in space? titanium's melting point is 1668 celsius and the thermosphere's ambient temperature is in excess of 1800 degrees celsius
Roger Gulledge
Roger Gulledge 6 klukkustundum síðan
BYU Rules!
Recon 6 klukkustundum síðan
He sounds like adam west
Jude Munro
Jude Munro 6 klukkustundum síðan
haha he looked so done when he snatched it off him in 2:13
deenr qqwe
deenr qqwe 6 klukkustundum síðan
Do compliant machines and soft robots have any over lap?
Patrick 6 klukkustundum síðan
This is one of the coolest videos ever. Who knew bendy plastic could be so cool.
HD Ramen
HD Ramen 6 klukkustundum síðan
This guy looks like Ben Affleck's little brother
Augusto P.
Augusto P. 7 klukkustundum síðan
I wish I were able to weaponize my autism like Prof. Howell, but realistically I cannot see myself passing highschool anytime soon. Godspeed Prof. Howell.
tokekkk 7 klukkustundum síðan
7:57 me: * shocked Pikachu's face *
EPiK DJ 7 klukkustundum síðan
*intensely stares at sex robots*
AJtheory 7 klukkustundum síðan
That elephant mechanism (static rotation in space) was awesome. It's pinpoint accurate
Lauro Neto
Lauro Neto 7 klukkustundum síðan
God had this ideas first. Look at biology, btw.
Jocad Baggs
Jocad Baggs 7 klukkustundum síðan
ISvid bugged me to watch this super annoying guy bother a brilliant professor.
nowr2run 7 klukkustundum síðan
Now if they could design plastic hinges on cases that won't break off or crack ?.
Mihir Panchal
Mihir Panchal 8 klukkustundum síðan
This was your video where I said the highest number of “wow!”S. These things are incredible.
Charles Mouse
Charles Mouse 8 klukkustundum síðan
Bender would agree!
Down The Hole
Down The Hole 8 klukkustundum síðan
Hey @Veritasium do you know where I could get the specifications for the device at 6:15? I couldn't find it on the compliant mechanisms link... Thanks!
Down The Hole
Down The Hole 8 klukkustundum síðan
i lied i found it!
Jon Swe
Jon Swe 8 klukkustundum síðan
7:26 incorrect pronunciation of processes, it’s no long e at the end
idriwzrd 8 klukkustundum síðan
I think I have a new hero. I really wanted to see that chainsaw centrifical clutch operate in slo mo guys speed.
Kevin Suarez Macena
Kevin Suarez Macena 8 klukkustundum síðan
So now, EVERYBODY DO THE BENDER!!! Ok no... 😗
Quagigitymire 8 klukkustundum síðan
Wow! A helicopter for a resident break in? Must be neat living next door to the Whitehouse! I mean typically the average person would be lucky to even talk in person to an officer for such a thing within 3 hours of first calling the cops to report the break-in so you gotta be knee deep in politicians and executives in the neighborhood you call home to get that kinda service....
h4st3d idk
h4st3d idk 8 klukkustundum síðan
Since the weak point is about the mechanical fatigue & tribology , more about stress tests should be present to see a significant move.
Daniel Malinovskiy
Daniel Malinovskiy 8 klukkustundum síðan
What university does he teach at?
Who Am I, Who Ar You
Who Am I, Who Ar You 8 klukkustundum síðan
WOW, I have really learned something extremely valuable.
DoomFinger511 8 klukkustundum síðan
"Yeah I made some safety switches for nuclear bombs and some parts for space crafts. Just another boring day.."
lostc0z 8 klukkustundum síðan
Could you make a combustion engine?
iggy12345 9 klukkustundum síðan
Okay, I like what you're saying and all, but I'd still prefer to have transistors over relays
jbrisby 9 klukkustundum síðan
Oh my god, he's invented the spring.
dogbird 9 klukkustundum síðan
i ship it
Sean Gray
Sean Gray 9 klukkustundum síðan
How do you lock the plastic vice grip?
Alex Baldwin
Alex Baldwin 9 klukkustundum síðan
Who would win Millions of mechanically complex machines built from the hardest metals with billions of bolts, screws, latches and gears or Some bendy bois
xczechr 9 klukkustundum síðan
Bite my shiny metal ass.
GrastTube 9 klukkustundum síðan
better than Bender?
Eastcrooked 02
Eastcrooked 02 9 klukkustundum síðan
you look like eolon musk
joseph sprague
joseph sprague 10 klukkustundum síðan
smaller tourbillons?
mhughet 10 klukkustundum síðan
Gilbert Virgo
Gilbert Virgo 10 klukkustundum síðan
Does he fancy Physics Girl?
ianchen9449 10 klukkustundum síðan
yes indeed we cant wait for sex bots
Michael Frymus
Michael Frymus 10 klukkustundum síðan
this was interesting. Simple stuff when you think about it
Spadez Youtube
Spadez Youtube 10 klukkustundum síðan
damn only if my straightener were bent
M Anderson
M Anderson 10 klukkustundum síðan
I've had a ISvid account for many years now and never comment. This is probably one of my Top 5 favorite videos of all time!
NochSoEinKaddiFan 10 klukkustundum síðan
As an upcoming engineer I have found something to add to my toolbelt, thank you so much for pointing me to that idea!
Johnny D
Johnny D 10 klukkustundum síðan
Compliant mechanisms look like the next scientific advancement. Truly amazing, sometimes we chemically design a new material that minimizes cost, and this time someone developed a mechanism that can minimize the amount of moving parts significantly reducing cost.
OmniaLicita 10 klukkustundum síðan
Looking for the "yay, more plastic!" comment.....can anyone show me the way ?
mihajlo olujic
mihajlo olujic 10 klukkustundum síðan
Adolf Furrer would love this ! ( Anyone who gets this joke can consider himself a high level gun nerd)
infideldog13 10 klukkustundum síðan
Genuinely fascinating. Makes you wonder why this isn't the dominant type of mechanism in so many applications.
6EN 11 klukkustundum síðan
yeah sure police heli for someone breakin in a house. gg 10/10 lie sklls
P Bebnowski
P Bebnowski 11 klukkustundum síðan
This is actually amazing.. i don't know why it took me a week to get to this... honestly you need to start doing click bait titles lol jk
DeleteriousDan 11 klukkustundum síðan
Why aren't our action figures made from these?!
Thomas Kundera
Thomas Kundera 11 klukkustundum síðan
Whatever he did, fact that he accepted to work on anything related to nuclear weapons, made me lost all interest for him and your video.
Cawfee Dawg
Cawfee Dawg 11 klukkustundum síðan
You are almost there! Make them self healing and capable of reproducing themselves.
andybaldman 11 klukkustundum síðan
*The silicon ones were called MEMS when they came out years ago.*
BozanicJosip 11 klukkustundum síðan
@6:55 showing him subtle middle finger
Daniel Mendez
Daniel Mendez 11 klukkustundum síðan
I wonder: how a fatigue testing machine is tested for fatigue?
andybaldman 11 klukkustundum síðan
*Why is this news or science? Things have been flexing since forever (and plastics).*
WHIT3B0OY 11 klukkustundum síðan
imagine building a watch mechanism with one piece that is the future
Anthony Bastian
Anthony Bastian 11 klukkustundum síðan
Im sorry i dont understand why bendy tools are so interesting? Ive been using flexible tools for decades
elcarmi 11 klukkustundum síðan
No shoutout to Destin for the style of video? 😧
Vega 128
Vega 128 12 klukkustundum síðan
i cant wait for compliant mecanisms to be used for micro relays
nope noway
nope noway 12 klukkustundum síðan
Not sure if comparing that plastic, pinchy, thingy to a pair of vice grips was a good choice.
Alucard Pawpad
Alucard Pawpad 12 klukkustundum síðan
coulda done well to explain how exactly that last piece is predictable, or withstands earthquake/vibrations to prevent arming. Oh well. A powerful spring detent that requries substantial intentional force would've been enough I reckon.
Jesse Finnerty
Jesse Finnerty 12 klukkustundum síðan
Bender would agree with the name of this video.
zwz • zdenek
zwz • zdenek 12 klukkustundum síðan
These things get used all the time, but they aren't that great in practice. They wear where they meet the "traditional" parts.
Beetle house brews
Beetle house brews 12 klukkustundum síðan
is it really solid titanium if it has been 3d printed? i would assume most of the flex would be coming from the layering, so this means it would need to be printed on a particular axis to achieve the desired flex. let me know your thoughts
Leo H
Leo H 12 klukkustundum síðan
fireoil 12 klukkustundum síðan
very sexualized position looks of that thumnail lol
Joshua Alfred
Joshua Alfred 12 klukkustundum síðan
This is so incredible. Mind officially blown.
Carbon Paw
Carbon Paw 12 klukkustundum síðan
"What do" stopped watching right there
Michał Chyliński
Michał Chyliński 12 klukkustundum síðan
Some people are so clever! Amazing!
MWSin1 13 klukkustundum síðan
Machines that have one part, yet somehow have five moving parts.
Microwave 13 klukkustundum síðan
Gotta love a youtuber who knows the right way to drop a sponsor at the end instead of forcing it on people!
Ethan Westerburg
Ethan Westerburg 13 klukkustundum síðan
ISvid, ive already watched it please stop putting it in my recommended
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