I'm thinking about improving V1 of the sword, which is obviously going to cut better because of the thinner profile, and making another video comparing that with a real katana. I was also swinging the final sword like a bat, because it lacked cutting abilities but it had a lot of power. Anyways Let me know if you’d like to see an improed version of V1, in which I fix all the mistakes I made, including a better slicing technique! Edit: I’ll do it Ps: the reason I kept the katana that thick, is because it would otherwise bend just with gravity. So the improved version of it is going to be shorter, kinda like a real sword.

@Eirenband

Ай бұрын

)

@foxshot8967

Ай бұрын

Yes! I'd love to see how well that version would cut! You could easily make a functional cyberpunk katana with some clever use of LED lighting.

@catfella

Ай бұрын

13 minutes ago

@RobloxHHL

Ай бұрын

V1? ULTRAKILL MOMENT??

@user-mg1cl1gn1x

Ай бұрын

u forgot to do the hardness 100/10 cutting test which is against itself, polycarbonate.

"Have you ever seen an invisible sword?" Well no, it's invisible.

@xx_supernovablade_xx4702

Ай бұрын

HOW THE HECK IS THIS TRENDING IN AUSTRALIA BRUUUUUUHHHHHHHHHHHHHHHHH

@marksilang4518

Ай бұрын

I mean, you have a great point😂

@sandwich4916

Ай бұрын

EX...

@user-sw1uk3sl3e

Ай бұрын

HAHA HAHAHA HAHAHAAAAA!

@stevenmerrell5565

Ай бұрын

"Great, you killed the invisible swordsman!"

For every push up this like gets, I'll do one comment Whos watching this comment in 144p?

@BenjaminClaretDeFleurieu

Ай бұрын

Lol

@Bread-qz3ht

Ай бұрын

Anyone watching in 2024?

@SlinkySmith59

Ай бұрын

I did ten now go fulfill my request!

@thomasjager-cash2859

Ай бұрын

Ong

@NightOwlYT.

Ай бұрын

I’ll do 10 pushups and you have to write 10 more commments

14:41 truly invisible 😂

@ahmedx8731

6 күн бұрын

😂😂😂😂😂

@elherederodeminecraft3090

6 күн бұрын

😂😂😂😂😂

@madux9467

4 күн бұрын

😂😂😂😂😂😂

@wickrambug

4 күн бұрын

@Ome-ga1

3 күн бұрын

😂😂😂😂😂😂

1:15 ‘and other indestructible items!’🤣🤣🤣 that phone really is indestructible though.

@dygie

6 күн бұрын

Wanted to say the same thing😂

The fact that the blade is so thick that it reacts like an thin hammer and not a katana. It do not cut but completely smash the objects !

@petermgruhn

Ай бұрын

The fact that his stroke is baseball bat smashing, not cutting.

@joedingo7022

Ай бұрын

Yeah, the first blade would have likely cut much better, even if it's far less transparent.

@jimmyrk3

Ай бұрын

@@joedingo7022 I want him to test the first blade. It would;ld have to be a better cutter, but maybe not as robust...

@CookSharp00

Ай бұрын

It's mostly the taper off the edge and somewhat the thickness of the whole "blade" Just as in regular cutting. It's behind the edge thickness. A thin but completely dull knife will still cut through most things while a thick but razor sharp knife will have a very hard time going through an object

@VincentWessling-fj9fl

Ай бұрын

Correction “a” thin hammer.

Will it keeel ?

@Keon-lx3ui

10 күн бұрын

😂😂😂😂😂😂

@WhisperCurse

8 күн бұрын

THERE IT IS! I was looking for the reference lmao

@DJzizou7125

7 күн бұрын

It will not keal 15:24

@deonclayton1099

2 күн бұрын

😂😂😂

He's running at me completely unarmed, what does he think he's doing?

@d1nodray

9 күн бұрын

lol

@thatorammutla3583

8 күн бұрын

underrated comment 😭

As a bladesmith, this pisses me off. As a bro, this is freaking awesome. Mike, if you see this, i can probably answer most of your questions about knife/sword/weapon making.

@fluppet2350

Ай бұрын

The concept is pretty cool and Many of the most egregious flaws can be daily easily fixed with help from someone who knows what to do. It would definitely be interesting to see another attempt with a little more knowledge behind it.

@EyesOn-Me

Ай бұрын

Oh yes👀

@matthewmarting3623

Ай бұрын

It’s a pretty good impact weapon, it just won’t cut. It’s effective, it’s nearly invisible and it’s durable. I was impressed as hell that he started freehand grinding those first sword bevels halfway through. Those steep bevels on the second one saved it from being destroyed.

@ryanlundgren

Ай бұрын

As a photographer/videographer, I wish he used a circular polarizer.

@nicholem1450

Ай бұрын

@@ryanlundgren as a pineapple i wish people would stop cutting us in half for sword videos

Airport security isn’t gonna like this one..

@ShortArtGuy

Ай бұрын

Airport security isn’t gonna see this one..

@Mahlak_Mriuani_Anatman

Ай бұрын

Nice​@@ShortArtGuy

@Fuck9oogleAskMe

Ай бұрын

They won't see it coming 😏

@karlharvey4806

Ай бұрын

Wait a minute i thought I saw a sword in there, hmmmm never mind just my imagination

@Sepoipaping

Ай бұрын

“Did that man just stab a guy with air? He’s the last avatar!”

Polycarbonate is fascinating. Use it in our print shop from time to time to make signs. When discarding remnants from a job, usually narrow pieces that are four or eight feet long (as the sheets we get are 4'x8') it's very difficult to snap them into pieces so they'll fit into a container. However, if you put even just a very shallow scratch on the side that you're going to bend outward and then bend it will snap very easily. Very loudly and dramatically too.

El que hizo el doblaje deberia dedicarse a hacer chistes en el ikea

A true bladesmith does not make mistakes. Just smaller knives. I’d like to see a test with v1 too. I know it didn’t match the title of the video, but your blade geometry was significantly more conducive to cutting through stuff.

@conifergreen2

Ай бұрын

And that small rounded part like in the teeth of T rex.

@bubby6858

Ай бұрын

Real blacksmith here. That's just bs. A single mistake can ruin the whole blade. There is no "just smaller blades"

@AGamersWorld1993

Ай бұрын

I actually think the V1 blade looked badass, and the distortion looked like something from a sci-fi movie.

@artsyvids2563

Ай бұрын

A crystal blade like that is cooler anyway!

@dipf7705

Ай бұрын

​@@bubby6858 unless you get it too hot, couldnt you just keep making it smaller to remove mistakes? Just curious

The right angle you cut into the blade where the handle and blade meet is what caused the break, not the added thickness of the handle. The same thing happens with steel weapons - they call it a stress riser. A rounded transition from handle to blade would help avoid it.

@MikeShake

Ай бұрын

Interesting! Thanks!

@chstoney

Ай бұрын

@@MikeShake to get a nice round transition easily and quickly, drill holes in the places where the cuts are supposed to meet, and then cut the material.

@king_the_titan8

Ай бұрын

@@chstoney well if you do that it would be almost impossible to polish so it won't be a invisible katana anymore

@CookSharp00

Ай бұрын

Didn't he still have the right angle (stress riser) when he redid the handle? I was thinking the same thing until he cut the handle in again

@evanli421

Ай бұрын

@@king_the_titan8 guy meant drill a large hole to create a fillet Edit: google "fillet machining" if you don't know what that is

Que grande Sergio Ramos. Se convirtió en ninja espadachín después de retirarse del fútbol.

Man this looks like a forged in fire episode seriously❤

Mechanical engineer here. By making a 90 degree angle between the blade and the tang in the handle you created a stress concentration there. Abrupt changes in geometry like this create localized stresses far greater than the average stress, hence why your blade snapped there. Fun video!

@t_g_gamerftw5075

Ай бұрын

Also, If I'm remembering correctly the flexibility of the material allows for better energy dissipation and lower impulse as the flexibility delays the force by storing energy in it's waves thus increasing the time it takes for all the force to act on the blade. So sandwiching it between two pieces increased the materials inflexibility at that point, and the flexibility along the axis of the beveled edge isn't good either due to it's thickness, so most of the force along that axis would have been transferred to the tang in a short amount of time, putting it under much greater stress.

@kyjohns8271

Ай бұрын

So would it have been better just to paracord wrap the tang itself ??

@davidsaunders2893

Ай бұрын

@@kyjohns8271 If by the tang you mean just the base of the blade (without cutting it), then yes! That's basically what he did in the end by just wrapping the base of the blade with a towel. If you mean keep the 90 degree angle and just wrap the smaller part, then no, the abrupt change in geometry is what induces the higher stresses. If he still wanted to cut the base of the blade to make a handle, he could have reduced the stress concentration factor by rounding the corner where the tang meets the base of the blade with a "fillet." The larger the radius of the fillet, the lower the stress concentration factor. In other words the more rounded the corner, the lower the peak stress caused by the change in geometry. The stress would still be the highest at that point, but it would be much less extreme than the stresses caused by the 90 degree angle he made.

@billymanilli

Ай бұрын

Yup. I was gonna say the same. I was saying to the screen while watching him make the rough cutout, that it needed some fillets in there! lol

@ruebenmikoch1828

Ай бұрын

Yes

"When it's wet, it looks great" His expression 😭💀

@ccflan

Ай бұрын

dirty mind hahaha

@JustAbigRythFan

Ай бұрын

That part was hilarious. Tells you a lot about him 😂 he's great tho

Mike, you are a great craftsman you put so much work into all your videos and i can promise we all appreciate it

“Glass is glass and glass breaks” loving the Jerry rig reference

@joshuamusser8893

Ай бұрын

Yes

@par6749

Ай бұрын

Bro violated the pumpkin at 16:24

@TroubleMitten

Ай бұрын

glad i'm not the only one who noticed lol

@LIL_flips

Ай бұрын

Welp i can still see it

@kosekpason2291

Ай бұрын

Came looking for this comment

14:35 Katana becomes really invisible 😂

@BORlNGVR

Ай бұрын

😭😭

@SkandarSmith

Ай бұрын

It disappeared right before my eyes

@ABYS5.

Ай бұрын

100% transparent

@DontEatLegoTV

Ай бұрын

100%

@choppaou7941

Ай бұрын

You're a mean one, mr. Grinch

In laymen's terms; instead of the 90 degree angles where the blade meets the tang, you should have had a radius. By creating a sharp 90 degree corner you created a high stress point where all of the energy from the impact of blade is transferred to. Aircraft at one point had square windows because they're easier to make, but this saw stress fractures appearing in the fuselage. The reason aircraft these days have circular or oval windows is to negate high stress points.

now, build an invisible hammer

"Have you ever seen an invisible sword?" No sir, I have not.

@hikaihikonoken9052

Ай бұрын

At 3 likes, this is clearly an under-rated comment

@abrobot9261

Ай бұрын

@@hikaihikonoken9052 At 3 likes, this is clearly an under-rated reply

@TheYeetedMeat

Ай бұрын

⁠​⁠​⁠@@abrobot9261At 3 likes, this is clearly an under-rated reply

@smiley_boiiiii

Ай бұрын

@@TheYeetedMeat At 3 likes, this is clearly an under-rated reply

@GreatDynamics

Ай бұрын

At 3 likes, this is clearly an under-rated reply

This is his weaponmasters arc. First he mastered the fight and now he is learning the forging.

@cosobi

Ай бұрын

watch him become zoro in a couple days

@CatBoxOfficial

Ай бұрын

The story of the strongest italian: the movie

@bloodraege

Ай бұрын

The italian samurai?

@SkysHouseGaming

Ай бұрын

@@CatBoxOfficialHe deserves one.

@xyloiscool

Ай бұрын

then the crafting (cooking ig)

At this point, I just love to see the guy happy. The guy is so happy while making this sword lol. I love to see that wide ear to ear smile by doing something silly(as others would call it, but not me).

Your insane discipline inspires me to try again, Keep up the good work and stay happy 🙂

15:02 swordmaker here. When you make a sharp transition like between the tang and blade you create a stress riser. You need to create a round transition.

@robinlundh3962

Ай бұрын

In this case it’s a cemical reaction to superglue. The ”ice effekt” in the handle are multiple micro cracks.

@profezzordarke4362

Ай бұрын

@@robinlundh3962 That's not what he was talking about. What he is talking about, that in the area where the blade becomes the part of the handle, there is stress on the inside corners. If you ave steep angles in there the item can start cracking in those conrners and the blade snaps off. You need to keep these inside corners as round as technically feasible to avoid those stresspoints.

@robinlundh3962

Ай бұрын

@@profezzordarke4362 Pollycarbonate does not have the same mecanic disabilities as metal. It would only bend easier when narrowed down and you could do sharper cornering than this and it would not crack. Unless you cemicaly change the capabillity of the material, in this case with superglue. Superglue made microcracks all along the handle and it broke exactly where the material was no longer trippled in thickness. Rest of the movie it worked fine. Even narrowed down on the sander. Superglue is the culprit in this case nothing els. If it were steel. I would agree with the swordmaker.

@420StepsFromHell

Ай бұрын

​@@robinlundh3962 wrong. Stress risers due to sharp internal corners occur irrespective of the material.

@balrog99-41

Ай бұрын

The "cracks" that you refer to are in the handle itself, and the point of breakage is right before the guard, meaning it wouldn't make physical sense to break there instead of along the handle shaft where these "cracks" are. Furthermore the "cracks" are along the length of the shaft, while the breakage is perfectly perpendicular to it, exactly how a stress riser point breakage acts. Also, I say "cracks" because those are not direct deterioration of the poly through chemical reaction as you say, but simply weird light angles on the dried glue between the 3 total sheets of pol, causing a lot of refraction and reflection and the cool effect. Glue can't erode poly. The full structure would be in all fairness actually stronger, especially since the glue as a bond agent adds even more total strength between the 3 pieces combined.

*"Glass is glass, and glass breaks."* that reference made me smile :) Edit: That phrase is commonly said by a tech channel, JerryRigEverything. High quality content, highly recommend it. (Just finish this video first, it's worth it 😙)

@igorrauan9205

Ай бұрын

where is from?

@sethburnsman

Ай бұрын

@@igorrauan9205 JerryRigEverything, great channel on KZread.

@awihuke

Ай бұрын

@@igorrauan9205 @JerryRigEverything

@digbic9937

Ай бұрын

​@@igorrauan9205JerryRigsEverything...

@chris-aitan

Ай бұрын

@@igorrauan9205 JerryRigEverything

That'd be a dope anime idea ngl. The protagonist has an invisible katana fighting off various creatures and demons.

I actually really liked the v1, the distortion makes it seem like some magical fantasy sword, i hope we get to see more of it!

@EeveetoUmbreon25

19 күн бұрын

It would of cut better too with the geometric edge

The biggest reason your handle snapped off is the geometry of your sword. Having those sharp interior corners creates a stress concentrator. It's like if you have a 10 lane highway suddenly shrink into a 1 lane country road with no transition. All the cars (stress lines) have to bunch up at that point, cramming into that tiny area with no easing into it. It works when traffic is low (like swinging the swrod through the air), but the moment there's any serious traffic (like hitting the pineapple) there are too many cars trying to go into that 1 lane. For the cars, they just can't move anywhere, for your sword, it breaks. You will always run into this issue with making the grip smaller than the blade, but adding internal radii or some way to gradually reduce the size, will help to prevent this failure in the future. That will always be your point of failure on a sword made out of a single material. Katanas, even though they are made from one piece of steel, have different hardnesses at different parts of the blade and grip effectively making them multi-material sword. I bet you that if you were to take your V1 sword, even though it is a sharper blade, you will have the handle snap off even if you don't make the handle thicker. It's just a nature of your sword geometry and really only something you can learn from spending too much time reading books, or breaking things like your doing, which is how the books were written in the first place. I also don't want to invalidate your own discovery of adding material to the handle making it stiffer and contributing to the blade breaking. That is definitely a part of it and an awesome insight to have found. I just want to highlight that your 2D geometry has as much a roll in the strength of the blade as the 3D geometry does.

@samp1501

Ай бұрын

It’s actually most likely due to the fact that most superglues react with polycarbonate to make it brittle.

@amosdotl6892

Ай бұрын

@@samp1501 I'm of the reasoning that while the polycarbonate is able to flex along the flat edge, by hitting the material from it's most rigid side will always transfer more energy into the blade with nowhere to go but its weakest point.

@edvonrattlehead2135

Ай бұрын

@@amosdotl6892 is a combination of everything, he needs to remove some material to turn the sharp inner corners of the blade handle transition into round corners, for the handle 2 scales of polycarbonate are okay but only gluing them to each other so they encase the handle and then hold it with a polycarbonate pin so if shit hits the fan the polycarbonate pin breaks.

@MrOynx

Ай бұрын

🤓

@Whiterin

Ай бұрын

Good comment! I was going to point out the sharp angles where the handle meets the blade as well. There's a reason real, properly made swords are rounded there.

gotta say, I love the lack of music. The vibe is different and amazing. It feels like I’m there with you

Looks great. As a cabinet maker, I can help with bandsaw set up and use.

"That thing was too big to be called a sword. Too big, too thick, too transparent, and too plasticky, it was more like a large hunk of polycarbonate."

@nicholaswhorley8343

Ай бұрын

Chapter 376 coming soon!

@tophateyeball7198

Ай бұрын

Damn, I wanted to post pretty much this comment, haha...

@MeredithLikely

Ай бұрын

@@tophateyeball7198 hard same glad another berker got here first

@xXCharixmaXx

Ай бұрын

In that case, a regular sword is just a hunk of metal.

@Kuyadevo

Ай бұрын

Wait i know this manwha but i forget the title please help

8:35 banned from KZread

@Wolfubs

Ай бұрын

????

@therealultrag

Ай бұрын

Real

Awesome, congratulations. Mike if you can read this, you are the best, your thougth of " if you try and never give up you will get it " Its really motivator for me. Juts Now i am working on my tesis project. And always remember what you say. Never give up. Wish me look. Good job.

Bro is the definition of patient

so, coming from combat robots where polycarb is used a lot, i can tell you that cyanoacrylate makes polycarb brittle. it was the ca glue reacting with the polycarbonate that made it turn brittle. there is a chemical bonding agent made to glue polycarbonate, but isn't a glue, it effectively melts the 2 pieces together making it almost as strong as if it were 1 whole piece

@Rjciralli

Ай бұрын

This needs more likes

@i-yy8lk

Ай бұрын

@@Rjciralli yeh, why is everything so underrated

@GenZRuinedTheWorld

Ай бұрын

So basically it makes a reaction that "plastic welds" itself, that's cool.

@harrydavey9884

Ай бұрын

​@@GenZRuinedTheWorld Yeah it's more common that you'd think. Solvent weld is very common in modern plumbing.

@tawoorie

Ай бұрын

^

Once he showed the nokia we already knew we're in business 😂

@voltagemike4457

Ай бұрын

YUP LMAO

"The invisible sword is the deadliest"

@jesusalejandro5082

9 күн бұрын

-Zed

Lot of time & hard work 4 1 video, great job ❤

Awesome stuff. Trick as well. You can flame polish the edges to make them almost transparent after cutting. Also use resin instead of super glue to bond acrylic or get acrylic weld. Look at some aquarium videos to see how that works. It melts the two acrylic parts together rather than a glue. 👍

@MikeShake

Ай бұрын

Thanks for the info!

@simonwoodworks8840

Ай бұрын

Anytime! Keep up the good work!

@Lizardman60

Ай бұрын

​@@MikeShakeyou should make invisible baseball bat next

@r4yv1

Ай бұрын

@@Lizardman60 that wouldn't work

@mercenarytao2524

Ай бұрын

not sure about the flame. maybe if ur super careful bu last time i tried heat to smooth it out i overdid it and got bubbles in the material.

Alright so hear me out: There is another Japanese Martial Arts style that would make better use of the material, both in regards to its transparency and ability to bend. I believe it’s called Owari Kan-Ryu, but I just call it the Wobbly Spear technique. In essence, you grab a spear near the bottom and with your lower hand push it back and forth (sliding it through your higher hands grip) so as to cause the tip of the spear to wobble in a circular pattern. It helps to get past guard stances, and would likely benefit greatly from having an invisible spear used.

@garfd2

Ай бұрын

Like Hyouga from Dr. Stone?

@AmusedBigWaterfall-kh4vo

Ай бұрын

Spear guy from Dr.stone

@enigma9971

Ай бұрын

Even just an invisible spear blade

@OnlySayori

Ай бұрын

"what are you doing spinning that stick around"- the first victim of the invisible wobbly spear

@lemonlefleur6236

Ай бұрын

@@enigma9971 I don’t know if that would work as well. The blade would diffract light, which might not be a huge issue if the whole spear is invisible but would be if just the spear head was as you’d see the wood looking wonky through the spear head which would tip you off to its presence faster.

Your voice like a game characters and video is mind-blowing ❤❤❤

When it's wet, it looks great 😂😂

@Vibey800

4 күн бұрын

😂😂

8:26 💀💀😭

That's a hammer, not a sword.

@jacobgonzalez25

Ай бұрын

You do it then

@mahenmahen6771

Ай бұрын

​@@jacobgonzalez25ye

@shoaib6551

Ай бұрын

Why to do it in the first place 🤷

@ncshuriken

Ай бұрын

@@jacobgonzalez25 "You do it then" The classical zero IQ response. Why insult your own intelligence?

@chicken5021

Ай бұрын

🤓👆 that’s a hammer, not a sword

It looks awesome and I didn't expect that lol

Who remembers when Mike posted learning skill videos

It definitely deals more blunt and internal damage than slicing damage. Really cool!

"Cool sword." *Snaps in half.* "Oh, stress risers, riiight."

You should consider making a part 2 and call it: *I build a NORMAL Transparent Sword.*

I love the katana the outline from the edge is outstanding

Katana Cut Pineapple ❌ Pineapple Cut Katana ✅ 14:30

Demon slayer moment 14:41

@AAI_Einstein

Ай бұрын

😂

@alien3200

Ай бұрын

😂😂

@alien3200

Ай бұрын

😂😂😂

@Bee-45000

Ай бұрын

😂😂😂😂

@Jax_is_going_hunt_you

Ай бұрын

😂😂😂😂😂

My engineering teacher would adore you

This is a really interesting material science question. I’m guessing there are materials out there that would both be more transparent and stronger than the polycarbonate. Looking forward to version 2!

0:54 JerryRigEverything will be proud about the reference

What I love about this is that this is just some dude figuring it out as he goes along. He's not some professional but he had a cool idea and he wanted to create it so he did.

@BreadGood_21

Ай бұрын

Fr bro that’s why I’m subbed

@user-yh3td1gg1q

Ай бұрын

Welcome to Mike Shake

@mandarinas364

27 күн бұрын

No te jode, no es un profesional, solo es un KZreadr con 4M de seguidores que puede hacer lo que le de la gana porque gana miles de euros con cada video... no se que valor le dais a eso

build invisible armor :D that would be so cool

@Scarcheeze

9 күн бұрын

Layered by camo mirror

Thank you for your idea brother. When I'm done with mine I'm giving all my props to you.👍🏻 I can't believe I never thought about using polycarbonate lexon. Don't forget to put a blood groove in it or you'll get it stuck in someone's guts from suction.👍🏻

it doesnt cut…it breaks

17:43 I thought that the bee was real lol

@jacewilliston649

Ай бұрын

me too

@calixtosaid975

Ай бұрын

It was a fly

@-BenjiVr-Gtag

5 күн бұрын

Omg I jumped bro

14:35 was so funny

@somaligamerfreefire

28 күн бұрын

😂😂😂

mega ✨mesmerising ✨ magnificent filming too really took me there ✨ thanx ⚔Man

I work with this material a lot, to get a perfect clear edge you need to get them flame polished. The difference between that and hand sanding is crazy. Only thing is it takes a specialist tool, using a flame from a lighter isn’t the same thing. Maybe this will help you for the future :)

@Ethan54006

Ай бұрын

dude i can just imagine an even clearer version, it would be crazy

@yeetzabois3582

Ай бұрын

yep

@abdulshabanali7801

Ай бұрын

Bruh like this so he can see it

@MikeShake

Ай бұрын

That's really interesting, should I sand before flame polishing or could I do that right after the belt grinder?

@milkyycx1633

Ай бұрын

@@MikeShake no need for sanding really, but perhaps sanding to assure you have a nice level edge before hand wouldn't be a bad thing :)

@MikeShake I love this project and I'd like to help you make it better. I think that there are several areas of consideration for the next version and testing methods. I have not read all 6700+ comments, so please forgive me if I repeat any. I hope some of this helps. 1- The thickness of the "katana" and it's cutting edge -A katana is not meant to "cleave" through things. The curved shape of katana is meant to provide the smallest amount of cutting surface on the target. This increases the PSI of the cut. When you see a katana "chopping" through something, don't imagine an axe going through wood. Imagine the blade being dragged through the target and slicing deeper as the blade is pulled across the target's surface. More like a saw would work, slowly getting deeper by cutting along the surface, not going straight through. -A katana is thin so that (among other reasons) it can pass through the target with the least resistance. What you have created functions less like a katana and more like an axe, machete or kukri. However, if you decrease the blade's thickness, it will of course be weaker. -The edge angle is very wide, which is going to be more resilient to damage, but is not going to cut very well. That is why your cuts were messy. Of course, the narrower the edge, the more easily it will be damaged. -The problem you had with the blade being more visible with the shallower cutting angle would be lessened if the blade were thinner (as it would have less distance to travel from tip to flat) 2-Target materials -If you're trying to make an invisible katana, you would want to test it against objects that katanas are normally tested against. I have seen a katana cut a bullet, but if I remember correctly, the blade was badly damaged afterwords. The katana was ideally used to attack soft tissue and slice deeply enough with one cut to open an artery or reach vital organs. The easiest way to do this with a blade is to stab, which is why spears and arrows were more favored in large scale conflict and most blades (that I'm aware of) were meant to deal the finishing wound with a stab. There is a very interesting history about katanas and why they were shaped and used as they were. I highly reccoment learning about them if you want to take your project to the next level. 3-Swing technique and target fixation -When you're cutting with your blade I'm noticing that your swing is not at a comfortable level for you. I would reccomend lowering it so that you don't feel that you have to keep raising your shoulders at the last moment. Since training a correct sword swing is not neccesary for your project, I think it would be a waste of your time to learn swordsmanship. Of course, for your own fun and enrichment, I would say go for it LOL. But just for this project you could just work on a horizontal baseball swing or a vertical axe chop. The actual way to swing a katana takes a lot of work, and i think that your material would not do very well for the job (but I could be wrong). Once your swing is good, then I would focus on making sure that your target cant fall away so much. A lot of the energy of your swing is being dissapated by the movement of your target. 4-Safety -Even when you're cutting into soft targets, you can still have material failure. Since your sword is an unknown quantity I would highly reccomend that you at least wear safety glasses at all times. Since you're not a trained swordsman, you might also want to wear some wrist wraps so that any reverberation of energy back through the sword into your hands doesn't injure your wrists.

@davidgoulding3276

Ай бұрын

small point to add that I believe you missed(or i missed you saying), that the curve of the katana allows for easier edge alignment for a more straight on cut as the weight will carry to the back of the swing.

@kastrodelacruz2721

Ай бұрын

Wrote all that just to get two comments lol😊😂😊

@Rorxw

Ай бұрын

@@kastrodelacruz2721three replies now!

@hahashibe

Ай бұрын

u wasted ur time, bro is not gonna read all that

@davidadegbola2671

Ай бұрын

Bro... this is intelligently written 👏 I read through, and it's quite enlightening! Are you a swordsman? Or affiliated to any?

theres something so alluring about a nice chunky slab of PC, one of those materials that gives an impression of a liquid frozen in time

this is just a sword shaped baseball bat :D

This new concept of videos is a great idea, you should continue to create weapons and test them out

@4rdency

Ай бұрын

He should totally start selling them on a very specific market of sorts to make more money to make more weapons 🤭

@Ostr0

Ай бұрын

​@@4rdencyI want an invisible katana for Non-Gun Defense

1:15 "and other indestructible items" - lol, I absolutely lost it :D

@SeanFerree

Ай бұрын

Same 😆😆😆

@R4ndomUser567

Ай бұрын

Me too lol

@humanchannel9421

Ай бұрын

No you didn't

@R4ndomUser567

Ай бұрын

@@humanchannel9421 what

@NVDGaming_9125

Ай бұрын

This phone is legend and I still have it

Your blade, “It will keel” - Forged in Fire!!! 🗡️

well the thickness and the very steap bevel. + edge allingment, is also very important for a good cut.

GTA 6 is more invisible than this katana

@Vision_YT_

Ай бұрын

😂😂

@TakoumiEditYT

Ай бұрын

Nice one

@user-mc3jh9td8r

Ай бұрын

So true 😂😂

@nickhv7765

Ай бұрын

Yeah but that’s not hard to achieve

@sherryvanliew7254

Ай бұрын

​@nickhv7765 yeah you're right it's impossible

Hey man, I saw a lot of comments saying that the cause of the snapped handle is because of the geometry which could be partially true, however the primary reason why this happened is because polycarbonate becomes brittle when it is exposed to superglue or loctite due to the active ingredient cyanoacrylate.

@joshrepik

Ай бұрын

I think it’s a combination of the two. The added rigidity from the super glue, and the perfect line of 90° angles at the stress point. The handle couldn’t flex, and where it couldn’t flex was a straight line where a light scoring would snap that poly

@talonolson6050

Ай бұрын

Adversely he should try shortening the blade so that it doesn't flex as much... that much flex in any kind of swinging bladed weapon is not what you want unless you're making a whip sword

Pulling up to the function with this thing gonna hit different

Absolutely SCREAMS Forged In Fire.

8:30 I know that smile! My grandfather had a carpentry and I grow up playing in there. After school it was building time! Crossbows, soapbox karts, and any kind of toys and wood mechanisms... Unfortunately he is not here anymore, and all I have are memories from a time that passed too fast. That smile is everything, hold on to it brother!

@TheVaibhav26

Ай бұрын

uhh that wasn't why he smiled........

@skiddly9235

Ай бұрын

you know he was making a joke about.... semen? right?

@bm_peep48

Ай бұрын

Who’s gonna tell him?

@rishiirich3838

Ай бұрын

He was talking about pussy

@MikeShake

Ай бұрын

@TheVaibhav26 True for that specific occasion, but I smiled plenty of times for the love of what I was doing, so I totally appreciate this comment!

Nice job! A couple advices: 1) when unsure about how a material will react to being worked on with a machine, try on a small disposable piece first. 2) when cutting the handle recess, drill holes first to avoid sharp corners, from which a crack could be generated.

@TheAndreArtus

Ай бұрын

Even steel swords have a radius (smooth transition) between the handle and the blade, sharp [interior] corners are always a weak point.

It looks freaking amazing my guy ! Edit: It works freaking amazing too ! Subscribed

@AshleyRoseClinton

Ай бұрын

Hey I really like your face and If you don’t mind you could be my inspiring muse for an art project(the authenticity of c so facial emotion and expressions) i’m working on for a client. You will totally get paid for it as well and as a bonus.

i think its more cleaving than slicing, similar to an axe (due the thickness). still such an awesome project!

12:50 "mistakes make a masterpiece" -myself

@RedDeadEdjts

Ай бұрын

"mistakes make a masterpiece" -999plays

@holahola-ym1xv

10 күн бұрын

​@@RedDeadEdjts ""mistakes make a masterpiece" -999plays" -RedDeadEdjts

Hardness is not the same as tenacity, as a mechanical property. Policarbonate is not a hard material, so it is basically unable to actually retain the sharpness of the edge. That's why most of the test showed breaks by blunt weapon impacts, and not much of a cut. Still, it is a very cool weapon and admire your attitude of fucking around and finding out. Great video as always!

@kyleshinabarger8343

Ай бұрын

Just curious would he be able to coat that blade with something like Systemthree's T-88, or even cast one out of that and then use that? This when cured has a 7000 lb tensile strength, or do you think it would become too brittle?

@Pegatayayo

Ай бұрын

@@kyleshinabarger8343 that sounds interesting, but I don't really know about how well would that work in terms of resisting shock. It could very well be computer simulated before actually producing something like that. Brittleness is guaranteed with hard materials, but that only matters to the point of the shock you actually cause to the material (and the different forces that the blade suffers during a shock). I would say, it would work much better with a smaller blade size, maybe knife sized, which didn't have to work with so much weight on it.

This dude Is a W, instead of using green screen like other KZreadrs,this guy made an actual invisible katana..

Once you sand with your RO (Random Orbital) sander down to 2000 grit, I'd suggest using a buffing pad with fine to ultra fine polishing compound. To get it ever better try (experiment on a piece of scrap) flame polishing with a butane or similar heat range torch. Plenty of videos on YT to learn the process. The more likely reason your blade broke is because there was a sharp corner where you narrowed the blade for the handle. Anytime you put a sharp corner on a material it's going to focus the stress there and tend to crack or shear from the corner out. To help this, use as large a polished (no nicks) corner in your design as you can get away with. This can include a gradual taper if you'd like. Just no sharp corners, and it shouldn't be near as easy to break. Also, you should be able to get away with a steeper blade angle. Too steep and you risk cracking or chipping the edge, but too blunt and you impart more force (potential for damage) into the blade during the strike. The sharper the blade the less the resistance. You've got to find a happy median, again experiment with pieces of scrap Lexan before implementing on the sword would be a good idea. Figure out how to test your material properties before building out the project. BTW the polycarbonate sheet is also known by its brand name Lexan. For those wanting to use it, making sure it's NOT acrylic sheet (which looks very similar, costs less but is VERY BRITTLE compared to Lexan). My 2 cents, GREAT JOB on your Katana.

16:14 partially correct. The flexibility shouldn’t affect its ability to cut much, as steel swords also flex quite a lot. The thickness of the blade is part of the reason it doesn’t cut clean, but the main reason is the steep bevel. A bevel like that can’t get particularly sharp, and it’s a rough transition from the edge of the blade to the spine, massively reducing its cutting effectiveness

@nialelkhatib4226

Ай бұрын

It doesn't help that he's swinging the sword like a baseball bat

@UmbraDiSol

Ай бұрын

That's the other thing tbh, a curved sword shouldn't be swung like a base all bat as said above!

@systemcheater9071

Ай бұрын

And his technique and edge alignment

@halfrave

Ай бұрын

​@@systemcheater9071 Edge alignment isn't even real.

@MikeShake

Ай бұрын

The reason I was swinging it like a bat, is because I knew it wouldn't cut like a real katana, so I probably had a better chance of destroying the targets that way. I'll improve V1 of the sword (thinner) and properly use it too!

13:11 bro is literally holding nothing for 32 seconds

The start of a master bladesmith

Sneaking in that Nokia 3310 there is GOAT

The distortion effect was WAY cooler than just transparent! Wow that looked amazing! The sword ended up being more like a floppy long axe or something with that crazy shallow bevel.

“He Is a Man of Focus, Commitment and Sheer Fucking Will”

@ihatefurries-mp6tm

Ай бұрын

correction he is the man of focus commitment and sheer fucking will

@ANTINATALIST_lewis

Ай бұрын

Wait a minute!

Doug: "it will KEAL" David: "Still sharp but that handle is too thick" J: *intensifies*

You somehow managed to make a cross between a sledgehammer and a sword, and then made it invisible.

I quite liked the distortion effect on the first version. Also, I think this would look fantastic with normal looking, visible katana handle (guard, wrap, etc) and just the transparent blade. Could even put some lights in the handle so it put on a funky and distracting show for your hypothetical enemies. Flicking between invisible, hyponotic and bright flashes on demand.

@jakeforgey5378

Ай бұрын

hide a string of blue leds along it and shout "Brisingr" before it lights up...

@Zer-cv8ve

Ай бұрын

Someone is a fan of cyberpunk 2077 I see

The first one was way cooler honestly. It'd probably cut far better too; this one was more like smashing objects.

I make explosives/launchers for missiles, space crafts, among other things for my job - to test the final products we literally blow up parts inside a custom box made up of this stuff - it's insane how much damage it can take. I can be within a few feet of explosives, set it off inside and be completely confident and safe that it will contain the blast.

Ergonomic machete handle with a hollow grind would been interesting followed by super fine grit sharpening

"Glass is glass and glass breaks"-JerryRigEverything reference!

Another reason of why the sword was fragile at the handle is because of the sudden change of shape from handle to blade : This is called stress concentration, and it occurs where there is a sudden change in geometry or dimensions of a material, which causes an increased concentration of stress in that specific area Additionnaly, one of the reasons of why it did a poor cut on a watermelon could be due to technique, and the thickness of the blade. Swords are purposefully flexible, maybe not as much as yours but this is in order for steel to be able to go back to its original shape, and not just bend when an amount of force is applied. Maybe you can try but cutting and not swinging it like a bat, for exemple when you cut vegetables with a knife, you don't just chop it, but you also do a slicing motion, though this is an idea as I have no experience in using a sword, and only know the very small basics of material resistance, and I hope it helps !