PUSH LATCH Mechanisms (DIY!)
This Old Tony
There's something magical about push-push latching mechanisms.
Or maybe it's just me.
Let's talk about them and build our own!
Check out EngineerGuy:

  • IceFalken Ace
    IceFalken Ace

    As you named, the "latch" and the...I said, "wedge" and you, a half second later, also said "wedge thing". I jumped up and gave you a high five through my TV! 😁 .....now I'm headed out to buy a new TV.....☹️

  • Oliver Paszkowski
    Oliver Paszkowski


  • Spectacularly Scientific Do It Yourself
    Spectacularly Scientific Do It Yourself

    Hey, this was published on my birthday!

  • firoxlion

    Hehe sneaky subscribe button

  • diowk

    this guy is hilarious

  • Nicolas Rozo
    Nicolas Rozo

    This video is pure gold!

  • earl Wright
    earl Wright

    Pretty neat

  • Dry Roasted
    Dry Roasted


  • Pierce C
    Pierce C

    Hehehe hide the sausage

  • Brian Damour
    Brian Damour

    So, I really enjoyed the video and always marvel at latch mechanisms. But can we take a second and talk about the rabbit hole I went down when I saw what I now know is called a Lead Holder at 8:25. I liked the look of the Faber Castill TK 9400 so I figured I would check it out, do a little google searching to see what I find. Two and a half hours later and I am looking at a shopping cart that is making me a little worried. I am going to be smart about this and run this potential addition to our monthly budget past my wife before I hit the money button. She loves sketching as much as I do so this may end up doubling the cart....

  • Alex Works
    Alex Works

    4:20 I was laughing so hard my wife asks “what’s so funny?” So try to explain to your wife how a machinist video is funny....😩😆

  • Othoap Proto
    Othoap Proto

    it's like being back in high school with all them CLICKS

  • Ian Bridger
    Ian Bridger

    Great videos, I'm a long time fan, but I gotta finally say - you sound like Alan Alda!! Very cool and relaxing.

  • BuckA'loo4u

    why did you say "eyeglass tray" and show a "don't make me turn this van around" mirror?

  • mrrodgersphysics

    Can this be done in 2D, or do you need the 3rd dimension to get an asymmetric stroke?

  • Jim Mangum
    Jim Mangum

    I want to know more about the maho /may hoe / ma ho /that green thing that smells bad.

  • ruki25

    I feel like you came up with the joke at the end and the whole video was an excuse to get to that punchline

  • Warren Bowdler
    Warren Bowdler

    Talks some 😳 get on with it

  • West_Tee

    Man, when the pens come clicking in at 2:38, I was never more upset at the fact that a melody never appeared... of clicking pens... I was instead, more upset now than sad (sad being what I felt originally). I was upset now because the timing was perfectly wrongly executed. Fan of your work @thisoldtony, keep it up, been a watcher for a while! I have no machinist ability at all but watch your stuff. I feel you have taught me (without any practice), how to weld... I'm a Welder. (now) -West

  • J M
    J M

    poor bastard, springs cost like 4 cents

  • J M
    J M

    sneaky bastard

  • Lisa G
    Lisa G

    Great demonstration!

  • Jacob Williams
    Jacob Williams

    Tony hiding the subscribe button as a dashboard switch , very sneaky my friend!

  • hjalar

    2:11 Sir, please stop that magic right now!

  • Leoleonpd

    Oh my gosh, just click it already. I got so freaking impatient waiting for him to just click that thing

  • Brandon Wagar
    Brandon Wagar

    Oh, come now Tony. That would have made the vid had you shown the ashtray(change collection)repair!! 8 hrs, HA

  • daniel michels
    daniel michels

    7:11 you're welcome

  • Antoine Desrosiers
    Antoine Desrosiers

    Hi Tony, about flexures and latches the following video is interesting: tr-my.net/watchvideo/video-YEz-r8KDY-0.html

  • Morgan Smith
    Morgan Smith

    Im in Love with this humor

  • Gacheru Mburu
    Gacheru Mburu


  • alejandrinos

    I came for the curiosity about latching mechanisms, stayed for the wacky rambling. Subscribed too.

  • Bob Proxmire
    Bob Proxmire

    The cam reminds me of a formula 1 transmission, a very complex expensive clicker. 🥰

  • william fleete
    william fleete

    I’ve seen that kind of mechanism in push on push off latching switches as well

  • Michael S
    Michael S

    proof that this TOT was kidnapped by democrats .. " If you dont understand something, destroy it "

  • Jimuel T
    Jimuel T

    What type of steel were you using to make springs? Where can I buy it?

    • This Old Tony
      This Old Tony

      "music wire". Amazon, eBay, industrial supply... or a really good hardware store?

  • Divinegon

    Ur wife is probably so hot.

  • rkalle66

    15:39 Even if the cam is not 3D. A simple railrod switch like mechanism would do the same. Think of a train going backwards a switch which is spring loaded and give way even when the switch is directed to the other track. Another example is: tr-my.net/watchvideo/video--WN421leLkk.html#t=0m18s

  • jmdpaintball

    youtube hiding your video from me

  • Teach a man to fish
    Teach a man to fish

    Hydraulics and milling still fascinate the hell out of me after all these years.

  • Joshua Murray
    Joshua Murray

    Favorite part: the bullshit camera movement at the end😂👍 "Nice!"

  • Sam Roscoe
    Sam Roscoe

    You keep saying things that make me go to like the video after I've already liked it

    • Sam Roscoe
      Sam Roscoe

      I should say I'd rather you limit yourself to one likeworthy moment per video for convenience please

  • ButterBagelGaming

    where is the maho video

  • Richard Moore
    Richard Moore

    I spent 2 months trying to take apart every push- push latch i could get my hands on for a a project i was working on, this would have been quite helpful back then. Love this video. In the end the push-push mechanism was replaced by something different but i still enjoyed watching you make this.

  • Jomaster The Second
    Jomaster The Second

    I still can't believe the Subscribe button on your wife's ashtray-free car isn't being talked about more.

  • Joe

    We’re just gonna ignore that genius sausage joke?

  • JJL90

    Very nice video, thank you!

  • mattikaki

    Interesting. You tell everything so simple that everybody (even American people) understand it. =) Must do same kind of latch but because I don’t have any CNC gizmos I’ll make it of wood. The place it goes doesn’t need to last 100 000 times.

  • Fancy

    man that stupid damn sausage joke got me lol

  • labiadh chokri
    labiadh chokri

    Nice video , you can find the same mechanism in the play pause button of old cassette player and the power button of old TV

  • Abi Austwal
    Abi Austwal

    My request is make a different I've which can separate 😋

  • Mackinstyle

    So you could make multiple state latches just by adjusting the track's complexity. This is so cool. It's so simple.

  • Michael Jones
    Michael Jones

    Assume...you make an ass out of u and me.

  • Michael Jones
    Michael Jones

    My flashlight button never works that often. But my the media pushing my buttons work so I havnt turned the tv on in weeks. So this is better entertainment.

  • Dorngrunder

    Love this channel, these kind of videos are awesome, deeper understanding about stuff all around us 😀

  • Pilzy 88
    Pilzy 88

    As a Christened Paul I definitely can get behind the pawl action featured in this sublime latch/unlatch video. Paul supports Tony`s pawl feature. This pawl video is Paul appreciated. Could a non latchy latch be as a result of a poorly pawl?

  • watahyahknow

    hide the sausage.....how does he come up with these things.........

  • Sean Hill
    Sean Hill

    Hey does anyone know the brand of the Marking gauge(slide ruler looking thing)? I was really hoping to get one and all the ones I can find are cheap Chinese ones that aren't very good.

  • Devon Weidauer
    Devon Weidauer

    Tony, I'll have you know I sent this video to a coworker. We are manufacturing engineers designing an assembly fixture. A push latch will be perfect for one of our applications, and watching this video gave me ideas for the fixture. Thanks for your great content. Maybe my coworker will enjoy your shenanigans as much as I do and become a new subscriber.

  • DirtCheapS

    I like how you made the hole table go up and down. Like the wire and springs would hold it LOL.

  • Ravin Chowdhury
    Ravin Chowdhury

    Is it possible to design a mechanism that works solely in 2d?

  • Christopher Manley
    Christopher Manley


  • Eye Ore
    Eye Ore

    not everybody plays hide the sausage quite that way Tony. That made me laugh.

  • Victor Caballero
    Victor Caballero

    15:49 how can't I be blushing if you ask me to hold hands while we talked tony?. Lol.😁

  • Victor Caballero
    Victor Caballero

    I know, I know, latching mechanism?

  • Victor Caballero
    Victor Caballero

    Tony, what's the game called?

  • Jeremy Casteel
    Jeremy Casteel

    I really liked the "subscribe" button on the radio. Nice touch.

  • mosin hawnur
    mosin hawnur

    It was Abom in the mirror image

  • Lloyd Estell
    Lloyd Estell

    That is, without question, the most expertly crafted 'hide the sausage' reference I've ever had the pleasure to witness. Thank you, sir!

    • Robert Fleischmann
      Robert Fleischmann

      Yup - I laughed for several minutes at that one!

  • B100dyPhr34k

    9:14 this somehow acted upon my psyche... in a not so good way

  • machineball

    ADHD be like 9:16