New Cartoid Latch Explained and Demonstrated!

[@Bash_Minimal]

My favorite thing about this project is the commitment to working around having “no batteries required” as a design constraint, despite the ambition of how much functionality is being packed into such a wieldy prosthetic. I feel like a lot of modern engineering uses electronics as a get out of jail free card for designs that probably don’t need power in the first place.

[@satibel]

it's like designs that don't need microcontrollers, they require more design work, and won't sell more, and arguably sell less because it is way more reliable. purely mechanical designs are only suited for either designs where reliability is required, or for very high mass production, because capitalism.

[@EngineerMikeF]

Ditto, every technology has its niche. Default to electronic & motor control where that's not need or not optimal semes common these days. I see multiplexing used where analog would be simpler & more bullet proof

[@MrMetalpunx]

@@EngineerMikeF but it is optimal just not from your perspective. Like this hand for example, not optimal from basically any perspective but the man building it. If you have more or less hand it would be pretty much useless to you. If it were electric you would have many more control options so it could go on many more bodies. That's why the saying is if you want it done right you gotta do it yourself.

[@thekittenfreakify]

because capitalism cuts it too short.

[@MrMetalpunx]

@@thekittenfreakify are you saying capitalism cut his hand off?

[@wombleofwimbledon5442]

Dude. DUDE. Get it. Your injury is going to help so many folks in the future.

[@sonicfrog1]

Ian, you're such an inspiring engineer. This project you have is THE definition of "if you can imagine it, you can do it." On so many levels, your progress is such a statement of confidence that one CAN make something if they dedicate the time, patience and willingness to keep trying even when the challenges are so high and so many. You're helping the world in a such massive way. Thanks for sharing!

[@elijahr9376]

if I ever lose a foot or part of my hand I'm calling this dude

[@mogaming163]

literally, Idk how much he charges but its worth it, it'll work regardless of temp and place, no batteries, etc

[@justinnewman13]

Just when I thought there was a limit to the number of ways hand movement could be connected to the wrist, and used to drive a mechanism, you show us there is more to achieve. Great as always

[@Dysiode]

Oh my gosh, you look so happy! That's such a satisfying mechanism to watch, I can't imagine how much better it feels to use it!

[@missingpartsclub]

It's pretty cool! It's going to take a bit of practice to incorporate the patterns into my normal movements, but once I get it, I have a feeling that it'll be like splay. After as long as I've been running with designs that have splay, I couldn't imagine a design that didn't have it now.

[@RicciFiorentini]

I’ve been following the channel for a very long time. The progress is amazing! You are literally a pro now at making videos. I love all the improvements you are making to the hand and I never skip a video!

[@HolmesHobbies]

He is really doing well improving the "youtubeability", this format was great too.

[@DaHoodedBandit]

I just have to say, for someone with terminal cancer, you are absolutely WINNING right now. Ive watched this project since the beginning and the progress youve made, the dedication youve had, and the fight to just stay healthy is insane. Keep it up!

[@markbananagrabber]

I have no clue how I came across this video, but I am loving this! So amazing. I'm a nurse, and always had a fascination with prosthetics of all kinds since WWI. I'd love to get involved in testing and development of this type of engineering

[@Gunbudder]

There is so much potential for inspector gadget style fingers. a screw driver finger. a finger that shoots something out of it. a laser finger. you are becoming a real life bionic man!

[@ianbelletti6241]

Don't forget the finger missiles. You can't be a proper bionic man if you don't have finger missiles.

[@demonika13601]

Dude, you are an amazing individual and the true definition of an engineer. Your design is completely mechanical and the core mechanics can revolutionize affordable prosthetics! For the price of one 3d printer

[@Golden_SnowFlake]

I will never cease to be amazed at your ability to teach and create something so impressive. I hope you crack the code to making it a quick and modular design one day, as it would be neat to be able to have it fit more or less any hand shape, assuming you wanted to market it one day.

[@JDSquire]

Absolutely blown away by this guy's work ... wow!! Here's the thing, not only did he probably advance prosthetic science, his device shown here will probably look like an antique when he's done. Just amazing. Love it when someone doesn't let something like an insurance company stop them. So cool!!

[@RustyDockLight]

I love that you literally took matters into your own hands and built this. The creativity needed to work that out is amazing and inspirational. 👍

[@JacquesTreehorn]

I lost my thumb tip to a table saw and lost my desire to use tools. I am glad to see you are still at it. As time goes by I get more use to it. It was terrible at first. Took years to be less painful. It got it right at the quick of the nail base. I did learn how to repair the nail as it split grows with super glue, baking soda and silk. It is a good composite fix I do about every 3 to 4 weeks depending on how good the fix lasts. Keep up the good work. No matter what you do it will never replace the original which is frustrating.

[@bloudermilk]

Consistently wowed by the ingenuity of your design and engineering. Thank you for sharing!

[@deviant_ghost]

Keeps evolving. This dude is a revolution in human form.

[@JinKee]

a human revolution. he never asked for this.

[@mack_mcmillan]

I lovingly hear the T2 - "Dun-dun-dun-dun-DUN" whenever I watch your videos! That is an epic piece of engineering, sir.

[@PortRhouse]

Just stumbled on this randomly, and this is one of the coolest prosthetics I have ever seen. That mechanism is ingenious, it looks like Luke Skywalker's hand! Having a purely mechanical prosthetic seems like it would have a lot of advantages. All of those gestures look to be controlled by pretty strong muscles in the forearm so I would imagine you could probably achieve some good grip strength out of this, all with fast and dexterous movement, and no batteries or whining motors. Hats off for designing and fabricating all this.

[@HolmesHobbies]

He's shown the crushing strength in vids, it's really high. He's got one design that locks the fingers in a curl so it carries things without wrist pressure

[@shoom1807]

Hey, Davis! I'm mechanical engineering student, doing my own research on prosthetic arms. Just found your channel and the idea of such work is incredible. Easy to made and fix, and unlike other projects, chip to build. I'm looking forward to build something like this, and your work inspired me a lot. You are truly wonderful, and if you have such intentions, I could help you with some aspects that you want to improve, if only I had time :)

[@niko7903]

If you're going to have a cool looking cyborg hand, you need to be able to flip a powerful bird, spring for that middle-finger option. You don't need it often, but when you do, it'll be ready to put anyone in their place with authority. Very impressive work, great job!

[@TheGrobe]

Wow, the implications of having so much functionality without ultra expensive electronics that need constant charging and maintenance are huge! This type of device will be so much more accessible to the people that actually need it. And what an amazing piece of engineering! Best of luck with your project!!!

[@padrat88]

Just incredible. As a mechanical Engineer I can only marvel at the complexity and precision of your work. Great job!

[@crackerbarrel6965]

Now I know! I got into an argument on the street over the cartoid latch mechanism with a guy just this last week. I wish I had seen this video beforehand. Thanks!

[@HyperMakes]

Every effing time! This guy never ceases to mesmerize me with how cool mechanical engineering can be. Great respect for all the mechanical engineers.

[@jeepmanxj]

Its great how far you've come with this. I've been watching for years now and its fascinating seeing how you work around all the different functions.

[@imdeaded]

That is the most amazing engineering ever! So cool. Mechanically physically amazing. No batteries required !

[@JT-er5yx]

You're Changing the world with this and I really want to thank you

[@TotallyFred]

If one day I’d loose fingers, I’d want your prosthetic. None other. Your work is amazing.

[@MattTheriot]

Wow that is VERY impressive! Looks like with such an advanced custom prosthetic you can replicate a SERIOUS amount of lost functionality, you should be very proud of your design!

[@HolmesHobbies]

Your iterations and refinements are amazing! What a machine you've made

[@Justaguyyakno]

What about using the thumb to control some kind of multi-notch switch on the side facing it? Too difficult or unintuitive to activate?

[@alecsbuga]

Man, this looks amazing. You're a very talented engineer. Got here by YT recommendation, but the prototype looks AMAZING

[@catharsis25]

This is one of my favorite channels, and is so wholesome. Thank you.

[@IamKai8947]

Brilliant. Just fingers Brilliant! Talk about an indomitable spirit. You, Sir, are amazing.

[@mrwhobodiggz]

That might be the most satisfying peice of engineering i have ever seen..

[@todorchonov5356]

Dude that hand looks insanely badass. It's like something pulled straight out of 40k

[@moritakaishida7963]

You're gonna change the world of prosphetics one day, keep on keeping on 👍🔥

[@survidmt]

Enjoyed your video very much. My mechanical experiences have not yet included anything like this but fair to say I can grasp mechanical concepts fairly well. That said, this work looks/functions fantastic, appreciate your tenacity.

[@weegaz22]

Truly impressive engineering, well done...

[@Jakeverhart]

It looks so natural! You are such an inspiration!

[@koko969w]

I can tell you're proud of this particular addition, and you should be! You are awesome man. I'm glad the 3D printing iterative process is much smoother, additive manufacturing is a heavy portion of the future.

[@XelaSnikliw-fg8wu]

There's a lot going on in that little piece! Stupendous!

[@artosbear]

Your work is creating the future

[@Moist_yet_Crispy]

All of this design is endlessly awesome!

[@OddlyIncredible]

I swear every time Ian posts it makes my "build things" nerve twitch...

[@TheChefmike66]

Holy cow man, I'm trying to process this. How amazing! I'll be looking at your content for certain!

[@kjbaran]

Simply amazing! I love the steampunk aesthetic!

[@ramakrishnanr3877]

You are an inspiration,Thanks for doing what you do. I'm learning a lot from you.

[@gearheadgregwi]

Holy crap. I could just sit and watch fingers open and close all day.

[@haydendtsmith]

this might be the greatest thing I've ever seen

[@missingpartsclub]

It's pretty cool, I've started wearing it during the day. Of course, the end points aren't quite in the right spot, but I'll keep adjusting them. The grip patterns are taking a little bit to get used to.. I still think it has been a good investment of my time adding the functionality, but it is going to take a bit to get it integrated into my:daily.

[@jskjsk3986]

Very cool. It shows the complexity in the simplest of things.

[@karlthompson5970]

Fascinating. I love your engineering and innovation 👍🏻🇬🇧

[@young-salt]

I think its great and a lot more intuitive than my thumb actuated pattern switch idea

[@calvinbass1839]

Fascinating! Thank you for sharing. Have a blessed day.

[@SamuelVella1995]

The latching mechanism for your pinky and ring finger lock is all over youtube at the moment! The wintergarten project used it recently, and This Old Tony as well. Cool stuff.

[@cucumberwhale]

Coolest hand ever!

[@russellgrooms314]

Wow sir, that is absolutely amazing.Well done,iam sure that in time you will make it smaller,and you will be a rich man. Good luck

[@Kuh2e2]

Hey Ian, I love your work!

[@origamipurple]

This man is a genius 👏🏻

[@aaronhoss]

First time here (thanks algorithm!). This is AWESOME.

[@monchytales6857]

sweet jesus that's amazing, how do you get such an fantastic range of motion and control? I gotta watch all your videos this is so impressive

[@lohikarhu734]

Welllll .... Pretty interesting design work, and, not just design, but built!

[@saurabhsaksena324]

Sir you are a genius and an inspiration to me

[@NexGen-3D]

Really well done, great use of 3D printing.

[@rolandthsive]

you are doing gods work my man. Great stuff!

[@Happy-Honkey]

You should be sponsored by Bruce Campbell and the army of darkness. Seriously though awesome work!!

[@discosanandreas]

Impressive design work. Fn’ Awesome!

[@jholmessiedle]

Great piece of engineering for functionality!

[@3d1e00]

You could look at actuating via a foot operated wireless controller if you need even more dexterity? If you wanted to actuate off something more local wonder if you can measure a tense of your arm muscle and drive something too?

[@thisguydiablo]

the coolest prosthetic out there , electronic tech prosthetics are cool but all mechanical is even more bad ass

[@sotetsotetsotetsotetsotet2379]

I'm super interested in if you have done any grip strength tests on these.

[@michman2]

My man... Sweet work. Keep it up.

[@crisrose9707]

how do you tackle the decision between adding functions using wrist movement vs the actual use or your wrist movement? obviously any method of using some movement to change a setting stops you using the same movement as general range of motion. e.g. shaking hands with someone causes a movement that tries to lock the fingers in place......or does it only change grip patterns when the fingers are fully closed or extended?

[@nunyabusiness3267]

amazing progress love your videos

[@Patraquashe]

Cool stuff as always!

[@Crtnmn]

You are very intuitive. I see the value of the purity of the mechanical design restatraint. But electronics are not the enemy right?

[@ellya3775]

Would be awesome to see you use this in a day to day setting. Working with it. Curious on your dexterity

[@missingpartsclub]

It's going to take a bit of practice to integrate the patterns into my daily with this setup. I really liked patterns when I was wearing the 158/159 devices. The big difference now is that this setup is kitable, which is huge!

[@brocKain]

I love that he doesn't need any type of cybernetic or whatever interface. It's purely mechanical and manual lol.

[@kriztov265]

Bravo Buddy your work is amazing.

[@VictorAbel123]

Hello. Thank you for the video! You are an incredible engineer, your brains compensate for any physical problems. I have a question for you: I have a similar situation. Is it possible to order a similar prosthesis through you? Or can you tell me how this actually works? Thank you very much!

[@watzdefuque5378]

Brilliant, usefull, and super cool looking. How much does it weights ?

[@Cpt.PickHard]

Dude a white button-down shirt combined with your prosthetic hand would look rad as hell

[@rabidbeaver167]

Its truly amazing what people can do when they have the resources. This is what innovation is. This is priceless. Not some goblin sitting on a throne of cash throwing shit at the wall to see what makes him money. I hope you can continue your work unhindered.

[@International_Jetset]

You the next level of the next level of the next level...and so on

[@SteveKonrete]

Lovely work!

[@alejandrapaolag2105]

This is the most natural mechanical hand I've seen if that makes sense

[@keithc904]

Amazing work!

[@jimlambrick3248]

That is seriously cool!

[@palarious]

looks fantastic!

[@Sludge73]

Amazing design.

[@SlavTiger]

I have to ask, can you do *that* gesture with it? genuinely curious

[@davehand8622]

Imagine having the coolest hand on the internet.

[@AndyWinslow]

Cool device! Props on the engineering. I'm curious if you've worn it for extended periods and can say if the weight or fit began to wear on you towards the end of a day?

[@triggerhappyfreak]

Can you extend the traffic finger?

[@C3DPropShop]

This is fantastic, Im amazed. You should be proud of your accomplishments! I am curious as to the material and weight of the assembly.

[@missingpartsclub]

The AFLinked 5 weights just shy of 1 kg as I'm wearing it now where as the AFT4 weights 1.15 kg. Not much of a difference, but wearing it all day, you can tell.

[@C3DPropShop]

@missingpartsclub amazing. I'd love to see a carbon fiber or some lightweight composite version when you're "done" designing. (It's never really ever done, is it?) This is an important project, You are doing spectacular.

[@eliassimon666]

Curious to know how rigid the index-only pose is. Can you, like, operate the PIN pad at grocery checkout? Are the fingertip materials detectable with a smartphone touchscreen?

[@missingpartsclub]

If the finger is fully extended (straight), you wouldn't/shouldn't have any problem using it with an ATM, microwave, or pushbutton keypad. It would just take practice integrating the motion into your normal.

[@jeffstrongman7889]

This hand is truly incredible.

[@philipehenriques5370]

I love your ingenuity so heres a tool that will 100% help you make lighter yet just as strong and easily replicable hands and parts. Take a look into mironics 3d Printer its a SLS printer which usually costs upwards of 25K to purchase but these guys managed to make one for 3000$ and it would be an invaluable tool for you as printing with nylon is almost as strong as aluminium but you have bonus of designing parts that are more complex, lighter and that print super quickly with no adhesion or layer line issues since they have the strength of injection molded parts.

[@crm.carpentry]

Very clever man! ❤