Welcome to the cap club! Couldn't have done better myself, I never imagined a bouncing shield would work that well! Definitely a potential real product, you should try and partner with Disney to make them!

That collab with Allen was so fire

What a simple build! This is one of your best projects! This looks so much attainable and is so close to the movie and comics. Like that ratio is perfect!

A note for the future if you wanna try this again; carbon fiber doesn’t have substantial stiffness by itself, it’s the resin that’s super rigid. If you could find an alternative option for the bonding resin, something softer and more flexible while still being durable, you could make the entire shield from carbon fiber with that alternative resin

J: *tries to make caps shield* Also J: *accidentally invents a million dollar toy idea that's gonna make him filthy rich*

This is just as impressive as JLaser's more technical builds, IMO. His disciplined approach to the physics, not leaning on electronics for any part of this, is extremely impressive. It would be too easy to slap some swiss cheese on a drone and say "the movie thing flies, and mine does too. They're the same!", but JLaser actually made something that acts just like the shield on screen. And he did it by getting to the root of the physics. Top tier stuff!

I love how you explain the physics behind everything! A real engineer.

The amount of Respect I have for this guy for always persuing in everything is unimagineable

This is a great example of conservation of energy, in a system not wanting to be lossy upon impact. It's hard to maintain inherent kinetic energy with something so thin, but by god I believe your solution is great. Nice work Jake.

“Evacuate the city, engage all defenses, and get this man funding”

That battle with Allen at the end was so shockingly epic!

"360 no scope, backflip, mctwist" Prolly the best sentence iv ever heard

The "Captain America is just a geometry whiz who can calculate angles perfectly in a split-second" explanation is pretty much spot-on correct. It's mentioned in the movies (and the comics) that the Super-Soldier Serum basically made Cap into what Steve Rogers imagined the perfect soldier to be. So his grasp of tactics and strategy, his reaction time, and his awareness of his environment are enhanced every bit as much as his muscles, skeleton, and metabolism. You can see the seed of what the Serum enhances already present in Steve, though: in the scene where everyone else tries to scramble up the flagpole to grab the flag (getting a ride instead of a hike back to base as a reward), Steve susses out that he can just remove the lynch pin and the pole will fall over, allowing him to pick the flag up off the ground. So the basic ability to figure out efficient tactics and calculate angles on the fly was there, the Serum just cranked it up to 11.

Funny thing is, in the comics, the actual canon explanation for the shield bouncing perfectly IS that Cap can calculate the exact trajectory needed for that throw. He practiced a lot to be able to do that.

What did you use to make the shield bounc

6:37 “Cap’s shield is basically a frisbee, which I think is what Marvel was going for.” Ultron: “The World’s strongest metal and they turned it into a frisbee.” He’s not wrong.

@1:10 that’s literally it. The super soldier serum allows Cap to think faster (and see bullets after they’re already fired and heading towards him) so he really does just do these equations in his head with every throw.

This is by far your most movie accurate build ever. Very impressed. This may be your finest video

Jlaser videos you're MY favorite youtuber

J Laser is Like Bruce Banner , Tony Stark & Steve Rogers & Peter Parker Combined 🤣

Loved seeing the problem-solving process on the oscillations and getting the shield to bounce. Great stuff as always

I love the hacksmith, but sometimes since they’re so professional they don’t have many failed attempts on stuff, but seeing the trial and error for J, just so much more interesting to watch the actual build rather than just skipping to the final product

THIS IS PERFECT! JUST PERFECT! And what a cool video with getting back to that Alan guy. I'm just wondering how is this not a toy yet? I think we all want this

whoa you are like the greatest inventor i have ever seen

He actually can calculate all his shots and that is 100% why he’s so nice with the bounces

Now THIS is a good one! For these high-traffic projects that have been attempted a lot, it seems like sometimes a fresh, simple, creative approach is the key. Love the VFX drone boomerang shot too.

Awesome job. I just imagine SR chasing his shield around, getting it stuck on roofs and trees now lol

They actually already make a bouncing disc like this. The center is made out of cloth and the outer ring is a tube and it bounces off walls quite well. The one I have is about 3 ft in diameter

"Captain American is a geometry wiz that can calculate the perfect shot" Yes. That's exactly it. His super soldier mind allows him to react much quicker and much greater. He uses this, and the vibranium in the shield allowing it to absorb kinetic energy, to always hit his target and bounce back to his hands..

As a MASSIVE Cap fan, I think this is the coolest shield project on this site.

Well done jlazer 4 making that🎉

The shield toy sounds great

Science beefs are literally the funniest thing on youtube. Never stop.

Surprisingly enough, he actually DOES calculate how the shield bounces back.

your explanation is like a physics teacher

Amazing product progressing I've ever seen ❤

Fun fact, the fact that cap can bounce his shield so perfectly was brought up in the comics. He spent so much time training with his shield that he could tell how it was going to fly with just a glance.

It’s funny because Cap really is just great at geometry and has excellent battlefield awareness. Canonically, he evaluates the positions of all allies and enemies and finds the best path to do the most damage without hitting his friends. He even makes mistakes sometimes and has to make big dives to catch the shield or he just misses it all together. Though that’s rare

WHAT IS THAT TRANSITION THAT IS CRAZY AFTER U MADE IT

Epic bounce!

Three things: One, dope build. Two, of course we need "spring rings", anyone saying otherwise is wrong. Three, classiest and most constructive resolution to internet beef EVER. Keep up the awesome.

Frisbee + being able to bounce off walls, honestly I’d 100% buy that

This is the content I look for on KZfaq omg so cool

Please mass produce these! We will buy them!!

Is noone gonna talk about how fricking smart and genius this is, and people demand more, i mean they're not wrong, this is absolute quality content

As an engineer I have to say this is your best video to date! I like that you cover your entire process and your development skills have been improving with every subsequent video. I would have approached the problem differently but your solution is much more polished than your other videos. I watch your videos to my toddler, so we can discuss your approach and introduce him to STEM. Kudos on the design work, I am sure people would be interested in both of those as products. Great job, keep it up!

Really cool

yes the spring ring is awesome

He’s as brave as captain America, throwing the shield around windows without even flinching

“ or Captain America is just a geometry whiz” you’re joking but that is actually exactly what he does. He can just do the calculations super quickly

can i please get a captain America shield that bounces back?

All of your things are going to be so cool including the your Captain America shield I'm going to love it right now cuz I'm watching it

If Sean and JLaser got together - Sean: "Ok so I had a few ideas, first up is the Mark 85 nano tech suit." JLaser: "Let's do it."

This is the first "physics-based" cap shield ive seen and it looks like it would be alot of fun to play with

"Here's a drone shield: Eat sh*t." goes so hard.

Love the design. I was watching Tyranths capy shield and got this video recommendation. This is exactly where my head went when I watched his. Great vid!

Honestly though, "spring rings" sound proper fun to play with

Dude, that prototype could revolutionize ultimate frisbee

I have a cheaper idea: just add rubber bands to the side of a frisbee and paint it😂 7:17

I was so skeptical when I clicked on this. But, this was awesome, and I really want one!

Fun fact: Captain America is actually a “geometry wiz” cuz the super soldier serum made him smarter and the magnet also kinda assists with it coming back to him

This is honestly one of the best "made in real life" projects ever.

Hey I man a big fan of captain America and your videos they really help with Science project

I love Spidey's comment in civil war. Also, give me one of these shields NOW!

2021: making a captain America shield that actually bounces back 2031: making Spider-Man web shooters that actually swing you around

In marvel lore (and I think even in canon) vibranium is actually the most elastic metal on the planet, on top of being ridiculously strong. The combination makes it nearly indestructible. Cap’s shield is a combination of that alloyed with proto adamantium, which is just the hardest substance known to man. The combination makes for a good shield that also bounces like crazy

I love how you threw the throwing knife at the shield while you were holding it instead of just leaning it on the wall or something

The "spring ring" is an absolutely amazing idea and could literally end up being like the next big thing. I can see people lining up to buy this. Im already in love with it and i want one.

I’d definitely buy a “spring ring”

The spring will fly back frisbee I love❤

Steve Rogers was a geometry guru. He had an amazing eye for it in the comics.

This shield is awesome! It's cooler than the shield we used for our Captain America fight scene breakdown.

THIS is how it's done!! Thoroughly enjoyed this video, from concept to fabrication!

Imagine your friend with a metal arm that you thought died after falling off a train during WW2 but survived working with who he was trying to stop after he was brainwashed to be an assassin and he just catches it lol

Here's the actual way of boomerang functions The 1st wing Spin Spins in the left direction And the second spins in the right direction So that makes it spin really fast And then because of that speed Back to back to you

I have two kids, both super obsessed with Marvel & one who is a HUGE Cap' fan. Both have watched your video several times & would absolutely love it if a product like this were on the market. Also, I appreciate your adding actual scientific concepts into your builds. It's very cool to see some of the trial and error, and as a Mom I love that my kids are seeing you work through ideas with trial and error. Thanks!

I really like the way jlaser handled Alan's "criticism"

Imagine just driving to your nearest Starbucks when you see this guy chucking a Captain America shield at the wall

Imagine this guy getting a 3d printer some science dude for help and some money he would literally become batman 😂

Spiderman: That shield doesn’t obey law of Physics at all Jlaser: Hold my calculation

1:23 you’re right, it shouldn’t work, not even in the marvel universe, since vibranium absorbs kinetic energy there’s no way it could bounce

I love your idea. I love it so much that I want one of my own

I love how during the process of building a project for a video, you just kinda make a product that could easily be sold in stores and wouldn't take much effort to make.

The fact that this is just so simple is mind blowing!

I was actually thinking from the beginning that it would be an awesome thing to have. I was thinking if you could make it out of affordable materials it would make an amazing toy! I would love to have one!

13:48 finally!

I can't believe none has ever made a frisbee like the ones shown that could bounce back

Not only the shield ended up amazing, but that battle at the end was so awesome as well!

son: i want to see the hacksmith mom: we have him at home: him at home

Jlvideo: vibranium take infinite amount of stress Thanos:are you sure abouth tath

Cap actually is a master in geometry in the comics so that’s why he knows

The editing in this video has improved tenfold. Just the interludes of technical and scientific information accompanied by visually interesting and informative footage alone really stitches the video together. It feels much more professional and less of a kid in his garage with an iPhone. I also enjoy being brought along for iteration process. Be proud of this one. I can truly see the growth in your video making journey. Keep it up bud!

OMG I WANT ONE OF THE FIBERGLASS FRISBEE!!!

You’re so good at weapons, you should make an online weapon store

The rivalry with Allen Pan made this so much better LMAO

In the comics, its actually one of caps abilities to calculate the perfect shots in a split second. One of his powers is hes just... Really good at math.

What if placing neodymium magnets on arm gear and then put a ring of thin metal place on the shield so in that way you can instant lock the shield in place from all angles?

imagine living in this guys town and seeing him as a different fictional character every other day even if it defies all known laws of reality and physics

The spring ring is gonna get you so much money, I'd actually get that.

If I’m not mistaken, the reason the shield moves the way it does is due to cap’s enhanced perception from the super soldier syrum. He basically calculates the trajectory super fast.