Training NiTinol Shape Memory Alloy 

honestly that hammer lifting test was the most impressive part to me. I had no idea this material's "memory" was so strong

"By the way here's some thermite. But that's a story for another day."

You unleash the screams of eternally suffering souls whenever you turn on that torch

could just used the straight wire and reverse the footage :D

Cody’s Lab in 15 years: Carbon nanotubes from a brick of coal and urine.

If Cody got a Labrador, it would be Cody's Lab

That torch has sounds coming straight out of hell

that 60fps tho

that intro is amazing

Sooo I had a thought the other day... You know how the 2005 Christian Bale Batman's cape was made of a fibrous, meshy material which would become hard as steel when electricity was applied? Can that be replicated (or as close as) if you, say, combined Nitinol with Nichrome? Like a braid. Obviously it wouldn't be anywhere near as strong, but might yield interesting results. And we like interesting results.

You can use hot water to activate the SMA gently and evenly... For the training process: We found 500°C over ~15min to give good results. Any metal parts touching the SMA should be stainless; zinc plating seems to migrate into the Nitinol. The plaster idea is brilliant!

I would have gotten all bent out of shape if it didnt work

Did you just say "blood thermite"?

Holy moly you can have a nitinol spring inside the vacuum chamber and lift something out of a beaker if the laser gets it hot enough, or even maybe electricity flowing through the nitinol would cause the expanded spring to contract upwards.

A video on how to make the intro of that video.... Brilliant!

To “Cody’s lab” your channel has rekindled the spark of curiosity in science that I once lost, thanks dude. @Cody’sLab

So I just need to point a gas torch at myself to get my life back together..interesting I might try it

That was nice of you to refer your viewers to the other video for the explanation. So many RU-vid videos are just "covers" of someone else's work... heck, some RU-vidrs devote their entire channel to copying others. You, sir, are a gentleman.

Here's me trying to figure out how you made that intro before watching the video explaining how you made said intro.

The part with the hammer at the end was so cool and did a great job showing how strong it is.

As soon as I saw the EngineerGuy video about NiTinol I began waiting for Cody to make a video of his own. Now to wait for AvE...

The Engineer guys channel is a fun rabbit hole to go down. Highly recommended!

What happens if you bend it then run an electric current through it because if it reformed that would be great because if you had it in a machine having to blowtorch it every time you wanted it to work would be annoying

Not professional videos like every other youtuber. Not the best camera, or the best angles. Lighting can be poor at times. But by golly my favorite videos. I learn so many useful things because of your channel. You do what you enjoy and I think that’s meaningful. Most people make videos for money but I think you make them to educate others and have fun yourself which is why I keep coming back.

Cody'sLab taking Cody'sLab out of a Codyslab.

*8 minutes of my life that wasn't wasted, but also felt like a minute or so. great video absolutely loved it.

I was screaming "No way" to myself during the entire hammer part! :D

*I just wanna let you know Cody, that I'm disabled and I have the same bone disease that Sam L. Jackson plays in Mr. GLASS from* *the movie Split, & Unbreakable. I deal with SEVERE Chronic Pain, from Nerve Damage and* *Inflamation from the dozens of Past Healed Broken Bones I've had that still caused long term nerve and muscle damage over time.... but anyways..* *I just wanted to say that the few* *moments I get a day to watch one of your new videos, are the best part of my day! I can't tell you how many times I was really depressed or having a super bad day, and then my phone beeps* *letting me know theirs a new video and when I watch it, I'm instantly no longer sad and bummed out and I immediatly feel happy & excited and I'm instantly* *in a better mood and It helps me get back to having a good day again! I just wanted to say thanks for all the effort and time you put into making the videos, I know its alot of work, like writing, getting* *everything set up, filming, editing, and then running your channle on top of everything else as well! Watching these videos are the highlight of my day!!! I just wanted to let you**know all that, and also tell you how much your videos mean to me, and also to say Thank you!!! :)*

When i’m home alone, i get completely naked, take some trusty baby oil, lather myself up, throw a back pack on and pretend i’m a snail slithering around the house.

The hammer part at the end really blew me away, it didnt think it could be this strong !

Perfect timing. I needed something good to watch

Love your joy of learning Cody! Thanks for sharing what you learn with us! Your videos inspire this 65 yo grandma!!

7:10 "NiTinol Review"

That is so cool, I'm in the first semester of studying materials science and engineering and NiTinol was the first thing we experimented with.

Doesn't hot water do the trick too? It might even give a more immediate and cooler visual

Thanks for introducing everyone to NiTinol (Nickel Titanium Naval Ordinance Laboratory). Irregular grain boundaries are one of the reasons for it's characteristics. The Japanese secured the patents from America over twenty years ago. They've used it to knit broken bones together, used it in dental implants, automatic louver springs for HVAC and the list goes on. The Navy started with CuNi and went from there back in the late 40's. There are several methods for cold working and heat treating if my memory serves me correctly.

What if you pass a current through the metal then it would heat up.

The show with the hammer at the end gave me an idea for a nitinol timer: 1. Train nitinol wire to be a spring. 2. Hang a weight from nitinol wire. 3. Set up a button below the weight to run current through the wire for a set time. When the weight stretches the wire enough, it will depress the button, running current through the wire, raising it back up to its starting position. Simply record every time the button gets pressed. I'm not sure how you'd get the current to run long enough to raise it back up, but it would be interesting to see how the nitinol acts after repeated heating/stretching, as a function of how long it takes to push the button after a set time of heating.

Honestly, the hammer at the end was the most interesting. Didn't know nitinol would tense up like that with load when heated and relax when cooling off. More experiments with this effect please?

Your "IT WORKED" moments capture the magic of the video.

How come your blowtorch sounds like a sad vacuum

NiTinol wire is used in dentistry. It forms the new rotary endodontic files that are used for root canal shaping as a part of root canal treatment. Shape memory is essential for navigating narrow root canal systems and roots with extreme curvature.

Cody will you make some frames out of NiTinol for your glasses?

The spring at the end especially was crazy cool!

Hey do a Mining video Please I want for Christmas

I like how Cody manages to keep his work space clean every time. Such a worrywart.

Could you pass a high current on the wire?

It's amazing that this material is used for future rover tires, considering the fact that this metal has memorising crystals. It's also satisfying to see the reshaping process.

Did he just say blood thermite?

I love it when I find out one of my favorite youtubers follows one of my other favorite youtubers. It happens surprisingly often...

"Blood Thermite"?

The last part visualizes how much energy a propane torch really has, I am amazed by that.

hi

Hey, he took my suggestion to link to Engineer Guy's video! Thanks, Cody! I really love Engineerguy. Calling his content "very bingeable" is a huge understatement!

Cool Video, but you should work on your handwriting :D

I think a lot of people would enjoy seeing NiTinol tested to some of it's material limits. That is one thing a lot of the available video material doesn't show, it's limits, and while you can get a lot of information of datasheets, that isn't something most people could visualize in real life.

That intro of a video about making the video's intro. I love it.

That thing with the hammer at the end is amazing

I remember reading about this decades ago, but had never actually seen it in action! Thanks so much!

you are easily one of the best content creators on RU-vid, keep it up Cody

this is so well timed, just this morning i watched a video on a nitinol paperclip and my mind has been wondering all day how it gets originally formed

That hammer experiment at the end blew my mind. I really didn't expect that! I would have assumed that heat added to it would weaken the strength of the wire, but the elasticity just dragged it on up there. Does this behave the same in sheet form? I.e, would it make sense to make fenders/bumpers out of it?

Ayo you make really good videos and you're a genuinely endearing man. I appreciate you a whole lot.

Been a fan for years, first time I've been so early. You do great things, Cody!

Plaster & sand: The poor man's refractory cement. Worked great for a number of projects I needed castable refractory for. :)

that last bit with the hammer is really cool

My dad had a patent a number of years ago to use this stuff in automotive electrical connectors. The idea is, if the connection isn't great and the current flow causes it to overheat (like they oft do), the NiTinol "tongue" or "finger" in the female end of the box-shaped (or cylindrical) connector that is gripping the male spade (or post) end would press HARDER because of the heat, providing a better connection, and (hopefully) preventing thermal run-away. The connector itself wouldn't be made of this stuff, but utilized as part of the spring mechanism.

The hammer part at the end made my day man.

The pulling strength is just amazing!

The intro would look much cooler and suprising if it just went from straight to Cody's lab when heated instead of showing it beforehand

That hammer demonstration could have some interesting applications. If you supply the heat just with current and the wires own resistance, you could have an incredibly simple actuator

I used to work with Nitinol for medical stents. Its Af temp was around zero degrees Celsius. So normally it was super elastic, and bounced back to shape, but if cooled it was deformable, and would slowly bounce back to shape at room temp!

Great video! I've thought if this also might be possible using an electrical current, e.g. encase the shaped wire in clay or plaster/sand, and apply a voltage that would heat the wire. That should be easier than using an oven (for most of us), and you could probably measure the temperature based on the electrial resistance?

codys definition of safe and batmans definition of safe are 2 totally different things, batman cowers at these sights

I think the hammer and the "spring" was the coolest part.

First time saw that on you're channel a while back I wondered how it was done ... Nice thanks for the ' reveal' .. And very surprised it lifted the hammer.

That final clip is super impressive!

Making a video about making the intro to the video. Next level RU-vid technique

That shiny new furnace looks awesome!

I've always been fascinated by this substance. Thanks!

That wire is amazing! Looks like fun stuff

I always wondered how the hell they did "program" that kind of thing... Now I know thanks to Cody's lab.

The hammer-experimemt at the end is really impressive

Cody!! Love tour videos! Thanks for making them

I always loved how creative your intros are!

Another good picture of the Cody Slab

Love the videos.. very informative and many things learned by watching them. No matter what it is somehow you make it enjoyable to watch!

what a lot of people don't know is those flexon glasses use a different formulation of NiTinol, with the memory point below freezing and the memory point still quite high. NiTinol is a super-elastic metal.

I have been subscribed to your channel for over a year now, i love what youre doing here so very much. I wish youtube would stop their bs i didnt even get a notification for this. I never get them for codys channel. Why is youtube censoring actual educational videos, but allowing all this other nonsense? Wtf RU-vid ?

I grind niti wires at work, when theyre down to about .02" or less in diameter you can make a loop, pinch it in your fingers, and full fast on both ends and it will snap in half. Cant do the same with stainless steel wires, when theyre down to about .005", you can stretch them about 15% in length like a rubber band. It also wears down our machines about 7x faster than steel.

Amazing metal! Never heard of it till now!

amazing how strong that spring was

That ending was deff something!

Perhaps it would be worth making a template of nails hammered into a board in the shape you want and winding the nitinol around it, then applying the torch directly. If that worked ok it would be a lot less bother than curing the plaster & heating in a furnace...

That spring is super cool

Never knew this can be done. Great information!

"So that's where the casserole dish went" - Mrs. Cody, probably

“Oh? You making bread, Cody?” “Nope! Even better!”

Lifting the hammer at the end is way more amusing than it probably should be

I think the most interesting part of this is at the end, I never would have guessed that it could lift a hammer