Adam Savage and Vsauce's Michael Stevens Build a Kendama!

  • Published on Aug 11, 2017
  • Support builds like this -- and get a free gift -- by becoming a Tested Premium Member:
    Adam is joined by Vsauce's Michael Stevens for a special One Day Build in the cave. Michael has recently taken up playing the Kendama, a Japanese cup and ball toy, and Adam helps make one from scratch that helps optimize his play. This build engrosses both into topics of machining, knot tying, and geometric conundrums.
    Shot by Gunther Kirsch and Will Nail
    Edited by Gunther Kirsch
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    Tested is:
    Adam Savage
    Norman Chan
    Simone Giertz
    Joey Fameli
    Kishore Hari
    Frank Ippolito
    Sean Charlesworth
    Jeremy Williams
    Gunther Kirsch
    Ryan Kiser
    Thanks for watching!
  • Science & TechnologyScience & Technology

Comments • 6 321

  • Adam Savage’s Tested

    If you enjoyed this build, check out another one featuring Adam Savage and Vsauce:

  • Aries Fogleman
    Aries Fogleman 3 days ago

    It's kendama USA also the ball isn't a dama it's a tama because tama means ball in Japanese

  • Bee Beau
    Bee Beau 4 days ago

    It looks like your using the TARDIS pressing all those buttons on that huge high speed thing

  • Tamashii
    Tamashii 6 days ago

    These guys Brainstorming is perfection at it's best.

  • William Luxford
    William Luxford 9 days ago

    i found the calipers DUAL Reading Dial CALIPER METRIC Standard Inch mm

  • pro master
    pro master 12 days ago

    U know what is kendama trick jugle

  • Grant Stinnett
    Grant Stinnett 17 days ago

    I love seeing you two together. The pure intellectual and the practical intellect. haha. This is super fun.

  • Tiger Style
    Tiger Style 19 days ago

    Was supposed to be -4422 but at 51:07 they cut the hole at -4416

  • jar nuggs
    jar nuggs 21 day ago

    The sounds are hurt my ears

  • Alex K
    Alex K 23 days ago

    put a scientist and an inventor together who are both excited and passionate about what they do and this is what you get

  • David Kimmerly
    David Kimmerly 25 days ago +1

    Hey Adam...would recommend taking off the wedding ring when running the lathe! Maybe the watch too, but the springbar should break before it takes off your hand!

  • munchin
    munchin 28 days ago

    This is like a super cool dad building something for his son

  • Carlos Aleman
    Carlos Aleman Month ago

    Nice balero you guys got there

  • Zachary Devan
    Zachary Devan Month ago +1

    A tiny bearing connecting the string and sphere would have been cool.

  • JEOM 049
    JEOM 049 Month ago

    I didn't know Nolly GetGood liked science

  • Lots Of Gamer Pro
    Lots Of Gamer Pro Month ago

    I think they should make Mythbusters 2 with Vsauce and Adam Savage. Thoughts?

  • Tommy Yamakaitis
    Tommy Yamakaitis Month ago

    It's just so interesting that Michael can basically just stand there and watch for an entire video, but he adds so much to the show just with his thoughts and points of view.

  • Scales
    Scales Month ago

    If im stranded on a desert island with a shop filled with tools and materials and i can only take one person its ADAM.

  • evilfrog
    evilfrog Month ago

    i love that episode so epic

  • jak sam
    jak sam Month ago

    Why relative proportion is so amazing to you

  • The Nerd Llama Man
    The Nerd Llama Man Month ago

    I love it when these two get together!

  • TheZombieKing5445
    TheZombieKing5445 Month ago

    30:45 Me when I discovered porn for the first time XD

  • Lots Of Gamer Pro
    Lots Of Gamer Pro Month ago +2

    They should make a mythbusters with VSauce + Adam. No more Mythbusters Jr

  • immasmashyourface
    immasmashyourface Month ago

    Just turn the cups 180 on the ken. 🤦🏼‍♂️

  • William Hurst
    William Hurst Month ago

    Knurling instead of threads on the handle I would of done I understand the helix idea

  • acepilot1
    acepilot1 Month ago

    I dream of a TV show with Adam, Michael, and Mark Rober, and backyard scientist

  • This is Life
    This is Life Month ago

    Can’t believe I just watched this whole thing, but I love watching Michael and Adam work together.

  • Maxwell Dowie
    Maxwell Dowie Month ago

    Down a lathe river by an old oak tree...

  • Kurt Stedman
    Kurt Stedman Month ago

    I prefer analogue calipers too (so I love that double-needle one!) but I just got a neato digital caliper that can display fractional inch measurements as well as decimal! Makes it great for measuring bigger things that don't need to be precise down to the thou, or for carpentry.

  • A Limmi
    A Limmi Month ago

    40:05 "I'm really into asymmetry right now." He's such a nerd hahaha

  • Henry Archer
    Henry Archer Month ago

    Man you'd be kicked out of my class if you kept putting your hands super close to the spinning lathe

  • Clare Wulf
    Clare Wulf Month ago

    It’s painful to see the metric system ignored, but when you use it in conjunction with the imperial system, that is just cruel.

  • Another Dave
    Another Dave Month ago

    should have just made a rubber mold and then cast it in resin

  • Mike Pawlowski
    Mike Pawlowski Month ago

    this is one of the most amazing, creative collaborations of all time.

  • Juancholoco
    Juancholoco Month ago

    I wanna see the guy making a kendama by himself, that other guy wanted a threaded handle 🤣

  • Ky
    Ky Month ago

    I love how Adam just sent him home with 50 yards of string, He totally had enough of vsauces shenanigans and theoretical questions after that long ass one day build 😂😂

  • Andrew
    Andrew Month ago

    RIP Brody Stevens

  • Adam Fonte
    Adam Fonte Month ago

    This combined two of my favorite shows! And it was great!!

  • wambolt1212
    wambolt1212 Month ago

    yeah, thats way to close to an ar15 now that its black.....#banassualtkendamas

  • Simon Van Liew
    Simon Van Liew Month ago

    Gunthers edit on this video is really good, seamless. Some thoughtful/glamorous shots that didnt take away or distract from the overall informative nature of the show.

  • Mr.Derpy
    Mr.Derpy Month ago

    welcome to where a nerd can unwind and release all his questions on life in the most philosophical and scientific way possible. All the things you have been thinking of is now part of science!

  • Drizzy Williams
    Drizzy Williams Month ago

    I love how you can see Adam Savage's brain immediately start working when Michael 1st presents him with the challenge.

  • JapanEyedPinoy
    JapanEyedPinoy Month ago

    We should have an Adam-and-Michael-Get-Distracted Counter.

  • Jan BŮŽEK
    Jan BŮŽEK Month ago

    The reason given for the paper clip breaking when bent repeatedly is not completely wrong, but not completely correct either. It does have something to do with the metal microstructure. It does harden, but not because of heat treatement (quenching) as the temperature for that would need to be much higher (and you don't see the paper clip getting red hot - which reminds me, you can actually start a fire with a piece of steel you hammered until it started glowing, but that's slightly off topic). The reason why it hardens is because you are breaking the crystals the metal is made of and the smaller they get the harder it is to break them into smaller ones (try it yourself - take a match or a toothpick for example and break it in half. Easy? Do it again with the half. How about now? Not enough? Go on then and break some more). One of the reasons the smaller crystals are harder to break is that there are more of them. It would seem the diameter is still the same (or even slightly smaller), so the energy needed should be the same. BUT! It is farly easy for the crack to propagate once it started, but only until it hits a grain (=crystal) boundary. Then you need to start a new crack in the next crystal which costs more energy, that propagation of the already existing crack. In the end, the paperclip breaks for the same reason that made it harder - there are so many cracks in the crystals that forming a next one causes some of the other cracks to join together and a break is formed.

  • Kirill Lavrenov
    Kirill Lavrenov Month ago

    It's a tama not a dama

  • Carlos Spicyvveiner

    These two brainstorming makes my cock hard

  • Steve Mahr
    Steve Mahr Month ago

    I've watched Adam since the beginning, and never have I been able to smell the Nerd like I can with these two guys together. It's like a cloud of cheap cologne wafting through my computer speakers. And I say that with love. When they start talking about the "rigidity and uniformity" of string... hilarious!

  • Taco Cat
    Taco Cat 2 months ago


  • Mr. Duno9
    Mr. Duno9 2 months ago

    the lathe at 43:37 absolutely sounds like some kinda french horn or something

  • hefan Shi
    hefan Shi 2 months ago

    this was so cool I started drooling
    the machines are so satisfying

  • effyou128
    effyou128 2 months ago

    Its so funny when someone who has a different intelligence is amazed by basic machine equipment. Can someone show adam how to use a center finder the right way

  • Darksunrise
    Darksunrise 2 months ago

    I love all the clips of Michael playing with things in the background to satisfy his curiosity

  • Mark Herbert
    Mark Herbert 2 months ago

    2 of my favourite people to watch

  • diskodaddy
    diskodaddy 2 months ago +1

    Most therapeutic video i've seen in a while... I just wanted to skip through it whilst waiting for a download, and now i've watched the entire video, and felt thoroughly entertained the whole way through it! Thank you sirs!

  • MrLangDog
    MrLangDog 2 months ago

    "I only use this a couple of times a year"...but yet has no idea exactly how he is going to put the material in the lathe. Caught in a bit of a fib.

  • Cecil Denison
    Cecil Denison 2 months ago

    i feel like the handel should have a hole drilled through it vertically as well to stick the string through

  • Kevin Pruett
    Kevin Pruett 2 months ago

    "Machine a hole" ....
    Drill, reaming, or bore...

  • Kevin Pruett
    Kevin Pruett 2 months ago

    You're all fascinated by this, but as much as I like Adam.. I cant hear him talk about machining anymore.. the moment he said "lathing" i got a damn migraine.. he shouldnt be allowed anywhere near a lathe..

  • tiger12506
    tiger12506 2 months ago

    The kendama build part was kinda unexciting. What was really fascinating was watching Michael VSauce get excited about every little machining tool Adam pulled out to use.

  • logiclrd
    logiclrd 2 months ago

    A quirk of the Japanese language is that consonants "soften" when words are combined. The word for the ball is "tama", and the "t" _turns into_ a "d" when it attaches to the "n" in "ken" -- "kendama" but "ken" and "tama".

  • Jeff Bassett
    Jeff Bassett 2 months ago

    V Sauce dude seams like he would be hopelessly irritating to try to work with.

  • Burnningsoul
    Burnningsoul 2 months ago +1

    What would have been cooler to use is there is a nylon called nylatron (sp) that is nylon with moly (molybdenum disulfide ) in it that gives is a dark grey color with a darker color grain type of a look from the moly. It comes in other colors but the GS has the grain. It's wear resistant we use to make bearings from them. Nylatron is slightly lighter than Delrin but probably wouldn't matter for this toy.

  • Jonathan  Williams
    Jonathan Williams 2 months ago


  • mrhockett1
    mrhockett1 2 months ago

    By far the most interesting video Adam. It was an hour long and I didn't even notice. What fun this was! Thanks!

  • Jason Kowalski
    Jason Kowalski 2 months ago

    I thoroughly enjoyed watching this video. Nice build.

  • minato kidson
    minato kidson 2 months ago

    Could anyone make out what make and model Adam's lathe is?

  • livicat hummel
    livicat hummel 2 months ago

    9:52 **takes off glasses to read small writing** kinda defeats the purpose but love u tho adam👍👍

    • CosmoHolmes
      CosmoHolmes 2 months ago

      Maybe he's just nearsighted. I'm nearsighted and feel like my glasses get in the way when trying to read something small, due to light reflecting on the lenses.

  • Grandfather_Din_Racket
    Grandfather_Din_Racket 2 months ago

    Michael could be the new "mythbreakers" Jamie. Then you'd have 2 people less technical than Jamie dispelling semi-accurate mappings of Hollywood myths. (Actually, a better show might be "Until it fails" ...a show that shows the limits of machinery used on legitimate jobs, until the machinery or physics of the job fail. --I'd buy that for a dollar!)

  • Grandfather_Din_Racket
    Grandfather_Din_Racket 2 months ago

    Adam polishes the big black knob @20:55. @35:49 Adam makes sure the rim is circular. Then, Adam suggests that they design it so that the little white ken catches the big black dama(nator). ...These guys are cucks. There's a real underdone of cuckery in this video. Besides, don't they know this thing was invented in 1950 in America and is called a knucklebreaker? ffs

    • Grandfather_Din_Racket
      Grandfather_Din_Racket Month ago

      +CosmoHolmes I'm not wanting to see it. ...but it is hilarious!

    • CosmoHolmes
      CosmoHolmes 2 months ago

      Are you talking about that specific design? Because these toys existed way before the 20th century and are thought to have originated in France. Also, seems to me that you're just seeing what you want to see in this video ;)

  • Mason Steidle
    Mason Steidle 2 months ago

    It's funny that I just now stumbled across this, I JUST made a sphere cutter for aluminum on my shop lathe like last week.

  • The Emerald Eskimos
    The Emerald Eskimos 2 months ago +1


  • kstormgeistgem
    kstormgeistgem 2 months ago

    two geniuses at play. so much fun to watch.

  • Sam Sam
    Sam Sam 2 months ago +1

    I watched this whole video and didn't realize it was an hour long. Felt like 20 minutes

  • StriderXIX
    StriderXIX 2 months ago

    @39:15 The sound Adam makes when his soul leaves his body.

  • Pugaleto
    Pugaleto 2 months ago

    Best crosover ever

  • CedricDB
    CedricDB 2 months ago


  • Musa Manneh
    Musa Manneh 2 months ago

    Lmao 45:18

  • David Pizarro
    David Pizarro 2 months ago

    i need you tow to make more things.

  • Zebulon Virginia
    Zebulon Virginia 2 months ago +2

    OMG, machinists are so friggin sexy. I think I've developed a geek crush on Mr Savage from this video. Hey, did you used to be on something called Mythbusters?

  • Nuts Mc Flurry
    Nuts Mc Flurry 2 months ago

    Archimedes would be proud of that hand drill.

  • Tom Macarol
    Tom Macarol 2 months ago

    I need more videos like this

  • Julien Ribollet
    Julien Ribollet 2 months ago

    It's the second time i'm watching a Vsaucish relatedish video with a 40+ minutes religious advertisement before...
    wtf is there a crazy creep religious predicator targeting scientific's darwin-friendly videos??? youtube... c'mon...

  • Dakcoda
    Dakcoda 2 months ago

    27:54 me handing in an assignment which is half finished at early hours of the morning

  • heliosphaere sonnen_wind_kind

    i just bought a kendama in a second-hand-store for 50 cents and i love it. though i would like to try adams build, it seems so perfect.

  • Yoann Diguet
    Yoann Diguet 2 months ago

    You've got way too much time guys

  • siccmade425
    siccmade425 2 months ago

    The lathe force is strong with Adam!

  • Beep Boop I’m A Robot
    Beep Boop I’m A Robot 2 months ago +1

    34:42 - oh boy, what i would pay do to this with michaels left upper arm ..

  • The Occasional HaHa
    The Occasional HaHa 2 months ago

    Adam, your purple sharpie needs to be dusted.

  • Queequeg
    Queequeg 2 months ago

    Adam’s energy and Michael’s zen wonder balance each other beautifully. This is a winning combination and a great video.

  • SlickStretch
    SlickStretch 2 months ago

    "Harmlessness by association." I love it.

  • SlickStretch
    SlickStretch 2 months ago

    Man, I would love to have a day in Adam's shop.

  • Valdenyan Mapper
    Valdenyan Mapper 2 months ago

    hey vsauce, michael here, japan, or is it?

  • MrChubbyGames
    MrChubbyGames 2 months ago

    Some would say Michael had some big d*** energy in this video.

    DJ. KRISPY BACON 2 months ago +1

    I know it's called a kendama but the ball is called a tama not a dama

  • Sinan Akkoyun
    Sinan Akkoyun 2 months ago

    This is as chilling for me as ASMR for others

  • Sinan Akkoyun
    Sinan Akkoyun 2 months ago

    In this episode I learnt more than 3 weeks of school physics

  • Taker Tom
    Taker Tom 2 months ago

    can you believe they’re making a REAL kendama MOVIE!?

  • Dax Nova
    Dax Nova 2 months ago

    For a little kendama comedy check out my friend made this because she loves kendama and Japan so much

  • CyrenArkade
    CyrenArkade 2 months ago

    To find the points where the needles are overlapping, you should be able to use x-ceil(x)=x/2.54-ceil(x/2.54)

  • Aroven Talmav
    Aroven Talmav 2 months ago

    So happy to see one of my favorite people being knowledgeable in my soon to be profession. If a little freaked out about some of the very unsafe practices.