Hardest Materials vs 60,000 PSI Waterjet

$100 per inch, that's pretty pricey. We tested the hardest materials we could find to show the power of water. We started with cutting obsidian and worked our way up the Mohs hardness scale. We got some of the top ten hardest things from quartz to topaz and man-made ceramic.
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[@Manimal747]

So the hardest material on earth is marshmallows and tar. Got it.

[@Bamfhammer]

That is extra dark chocolate. Forbidden Smores.

[@egiteguhyp2480]

Head arrogant humans is hardest ever!

[@jamies4024]

😂😂😂 logic

[@Gorillarevolta]

Marshmallow oreo cheesecake*

[@jamiehughes5573]

I am hurt physically and mentally whenever i see crystals being ruined

[@yovanigramajo4632]

Scratches start at a level 6 with deeper grooves at a level 7

[@samuelsamuelsamuelsamuel9186]

Yes

[@joshuamitch22]

Yes

[@turolretar]

This is music to my ears

[@huntersmith4153]

Why is this so familiar?

[@yourlocalanimeprotagonist888]

@@huntersmith4153 its from that one dude who reviews phones

[@Axthenon]

I always thought that the water jet cutting was actually water induced around a blade to mitigate the warmth from the friction that would eventually bend the blade making it useless... Im quite impressed this was actually water and minerals all along cutting hard materials! Happy to have learned something like this today. thank you

[@MrDiehardNoob]

@@christopherbentley6647 Metal is softer than this stuff so would it really? ;)

[@MrDiehardNoob]

@@christopherbentley6647 So then its diamond thats cutting and not metal? by that logic it could be a ceramic blade or a wooden blade or a plastic blade. Your minecraft comment didnt make sense either friend

[@MrDiehardNoob]

@@christopherbentley6647 I will just reply okay you are right since I'm not quite that mad to reply a huge wall of text. Have a good time!

[@weebkawi1444]

@gab hug water alone does cut. Pure water jets exist. The one in this video is called an abrasive water jet.

[@JJAB91]

@@weebkawi1444 This. Water alone at high pressure will cut, thats why you have videos of dumbasses with power washers slicing their toes, fingers or hands off.

[@dj3nt_sux]

"Obsidian is the softest material that we have" *cries in Minecraft*

[@kryptonian69]

Yea

[@clone734]

B e d r o c k

[@eklhaft4531]

I was looking exactly for this comment.

[@usedtoberyanpoopnownormal8822]

That is actually why obsidian is o hard to break It doesn’t crack because its tougher but if it was stronger it would shatter way easier

[@silvervens]

B E D R O C K

[@eldinarifovic3903]

If quartz is harder than obsidian, why do we need diamond pickaxe for obsidian and quartz can be mined with the iron one

[@ActuallyDecent]

*confused notch noises*

[@theshreddedone8322]

The Moh’s scale is based on scratching.

[@Thomas-bt7or]

When you mine quartz you don’t break or even touch the quartz, when it’s mined (without silk touch) you get quartz. Basically what I am saying is you just mine the netherrack in the block around the white spots/quartz.

[@vibaj16]

but quartz blocks also can be mined with an iron pickaxe, actually I think a stone one too

[@bumbleecorp9824]

Well, easy. Thats why there are zombies and witches. And a dragon to kill. Oh it might be... because..... let me think........ is A GAME!!! Whaaaat? Whaaat!! Nooo. Yes

[@weirdhungidas8998]

The quartz growing in the quartz is so beautiful, i wonder how long it’s been growing like that

[@stylishmusic4012]

Judging by the size and diameter of it, I would say a few million years. Below 20 and above 5.

[@Sirciel]

​@@stylishmusic4012Na man, earth is flat and isn't million of years old

[@carbondioxides]

​@@SircielNope, the earth is a triangle and older than the universe itself.

[@Just_A_Guy_Here.]

@@carbondioxides Nope the Earth is the 4th dimensional teseract, and can exist in infinite dimensions.

[@dragonare715]

When you've been playing minecraft since childhood and you realize quartz is harder than obsidian: *_"Years of academy training wasted"_*

[@starcluster2593]

well mine i-

[@ShyDigi]

hardness does not equal strength. hardness resists scratching, strength resists breakage. theres an inverse corellation between the two, so when one goes up the other goes down. Obsidian may be less hard than quartz but it IS stronger, so it would need a better pick to break.

[@tongpoo8985]

@@ShyDigi you've got it backwards... Hardness and strength are directly linked, i.e. when one increases, the other also increases. Maybe you're thinking of ductility, typically the harder a material is, the less ductile (meaning it can deform more before breaking).

[@tongpoo8985]

@@ShyDigi in other words, ductility is the measure of how much a material can deform before breaking, and typically as hardness goes up, ductility goes down, meaning it becomes more brittle and can deform less before breaking. A property closely related to ductility is toughness which is what you may be thinking of as well.

[@ShyDigi]

@@tongpoo8985 thank you, had a migraine couldnt think of the words.

[@CheeseypiPlays]

"the hardest thing we've ever had to cut" *Cody and his diamond have entered the chat*

[@jacobriddle7230]

Toughness makes it more difficult

[@CheeseypiPlays]

@@jacobriddle7230 they were talking about Mohs scale, they've cut a 10 before

[@yaroslavpanych2067]

Exactly my though: what about Cody?!

[@prestonang8216]

They haven’t cut Danny DeVito’s *MAGNUM DONG*

[@ascobal]

*my pp has entered the chat*

[@sam_o_b]

The ceramic slice looks delicious

[@Badtaste21]

It's weird, right? Almost like the most perfect tiramisu mixed with the darkest chocolate imagineable or something like that. lol

[@javitz8847]

It looks like an Oreo cake

[@borgir9817]

@@javitz8847 true lol

[@1SGCarter]

I thought about marshmallows in chocolate coating.

[@1690sn]

Cursed pizza

[@jebodiahsmith6559]

The intern thing was hilarious

[@nachobiznez3021]

Never realized sand was added to increase the cutting power but that makes a lot more sense. So does the water jet cut better the more you use it technically, if all those extra hard particles are floating around in there? I suppose it might take a while before you would notice any difference. At the very least would it maybe change the cut quality?

[@xjunkxyrdxdog89]

The material coming off isn't as hard as the grit they started with so each time they cut something the mix is progressively getting softer.

[@knut3339]

The abrassive is added to fresh (or filtered) water. You can't reuse it, because the edges are wearing off and it can't cut as good as for the first time. The mixing is done in the nozzle right before cutting. The water is then sucked out of the pool and filtered.

[@xjunkxyrdxdog89]

@@knut3339 interesting. In sandblasting we use the same medium but it gets recycled many times before it needs to be replaced.

[@Just_A_Guy_Here.]

I'm your 100th liker here & bye.

[@ethanmay5667]

I love that in the middle of a pandemic they make the interns do the lick test

[@Gmailkonto23]

That's sick.

[@cosmicdraconian6712]

Epic bro

[@tylermcdorman4199]

So metal!

[@KlintKaras]

I mean its a hint sociopathic...

[@camelcam6008]

@@KlintKaras SOCIOPATHISM IS GROOVY

[@TheRealGuywithoutaMustache]

I bet you can't cut through Netherite armor

[@ammielestioko233]

@@gappywalking9008 coconut?

[@SimpleMusicProducer]

How do you craft if if you cant cut it?

[@blessedevil6031]

You're here agaiin

[@oumardiop1]

@@ammielestioko233 weird looking coconut

[@AurumFaber]

@@SimpleMusicProducer r/cursedcomments

[@CrocaHead]

Girlfriend: *takes her T-shirt off and sits on my lap* My Mohs scale: 9999

[@TheRealFraston]

Until your alarm clock goes off, that is

[@convergenceclown2386]

SNAP BACK TO REALITY *you don’t have girlfriend*

[@whatamidoingwithmylife4108]

@@convergenceclown2386 OOP THERE GOES GRAVITY.

[@indigo3032]

@@TheRealFraston this dude is on 10.000 mohs, because that didnt even leave just a scratch, that obliterated him

[@whisperingforest9909]

I'm just cringing when they scratch that beautiful price of quartz

[@jimmyschray2681]

“Obsidian is the softest material we have” me: “well you do have your fingers”

[@gnossiennegymnopedie8554]

yOu:

[@hagridsdisappointingson769]

Shit like this is exactly why the general public doesn't have access to specialized equipment.

[@wawazaza1785]

Nothing can destroy Dan's and Mitchel's muscular and calloused hands

[@jimmyschray2681]

@@wawazaza1785 god damn right.

[@vsus42]

@@gnossiennegymnopedie8554 exactly I see so many thing like like me: This guy: Me: It’s so cringe

[@And-rc9yy]

2:33 "A garnet abrasive to scratch its way through". Wow I never knew that. I just assumed the power of the water made the cut.

[@xgumsgnag3525]

Its not a 100% correct but about right. Its just much faster with the garnet. But you can cut steel and very hard things only with water. What i still wonder and cant imagine at all is how can the nozzle withstand. If this can cut diamond how can the nozzly withstand all that force or whatever you want to call this 😂😂😂

[@And-rc9yy]

@@xgumsgnag3525 Agreed it's mystifying

[@mdczk9801]

@@xgumsgnag3525 because the garnet is added in the end of the jet.

[@Graveskull]

@@xgumsgnag3525 Its because the nozzle is just redirecting the water, its not being directly hit and actually taking the full impact from it

[@karozans]

@@xgumsgnag3525 The nozzles are made out of really hard ceramics too and you do have to replace them often.

[@mikeymike7431]

Imagine having to use terms like "Sixteenth of an inch" instead of 2mm

[@LilDefuseKit]

Dude its ridiculous. The Lockpicking lawyer uses terms like "1/1000th of an inch" and I just cringe

[@KainArkanos]

Well, to be fair, imperial does have units that make more sense for daily use over metric. I'd sooner continue to use Fahrenheit, as its a system of feel and actually more accurate than Celsius because its units are actually smaller. The average person is more likely to think "Oh that is unpleasantly hot." if you say its 90 degrees (Fahrenheit) instead of 32.2 C.

[@fabianoenglerneto129]

@@KainArkanos About the temperature, that makes no sense. People using metric don't the decimal part on day to day use. Absolutely everybody on a metric system will think "unpleasantly hot" if say it is 32 C or 33 C (you can't tell apart 1 degree C of difference, so it's pretty useless to be more precise than that for daily use)

[@Vysair]

@@KainArkanos When I'm driving, I can see what 5m looks like, 100m looks like and how far is 1km. Not only that, I know how cold is -4°c to how hot 33°c is. I can also tell if it's 2cm - 5cm off an image too

[@flavc5434]

@@KainArkanos the units being larger have nothing to do with the accuracy. If anything it just makes it confusing when you say it's a cold winter day and it's 30°. Instead of just saying oh yeah it's -5 which is literally the scientific term for below freezing...

[@shibedude8427]

The ceramic: I’m pretty strong The table: mortal!

[@tommyk5690]

You can see the cut mark in the table though

[@tommyk5690]

@Raymond Yang Sorry, not quite my taste I guess.

[@chrisdenison3273]

Finally, some youtubers who know the difference between exponential and linear!

[@thomasesr]

Can the waterjet cut quantum physics? It's very very hard.

[@merlinmagnus873]

It's easier than trying to cut the heisenberg uncertainty principle. When you get done, you're not sure if its cut or not.

[@thefailedexperiment8483]

Good point

[@guaxinimdomato5825]

Why

[@AffordBindEquipment]

you capture it, clamp it down and they will cut it.

[@brighamruud5090]

Nerd

[@Sherwin657]

"yeah it's cut through" amazing work pretty intern guy

[@emerje0]

Literally had one line and screwed it up.

[@bigsmoke5185]

“Obsidian is the softest material we have” Me who plays Minecraft: those bastards lied to me

[@spheryc1648]

ceramic: is hard to break/cut me: oops, i dropped my mug and now it broke 😢

[@microtermite2326]

Ceramic = hard Me : marshmallows?

[@rawhidelamp]

@@vince864 rubber can bend and stretch And if you made your tires out of ceramic, it would be able to support the weight of a car because of weight distribution

[@haydenlawrie7130]

Different type of ceramic

[@Robpires2]

Obviously, cutting is different from breaking.

[@arma3koth290]

@@rawhidelamp r/woooosh

[@n7kie269]

Who knew that old cake could become so powerful

[@MigWith]

Lmao u right

[@BenjaminGoose]

"Powerful"?

[@n7kie269]

@@BenjaminGoose When you put cake in a fridge it becomes hard

[@GetRidOfHandles]

@@n7kie269 Don’t worry, god’ll fix this in the next update

[@n7kie269]

@@GetRidOfHandles ok finallly

[@tedhaubrich]

Adam and Jamie had Mythterns, but you haven't really made it until you get to be a Licktern for Mitchel.

[@balaamsass5540]

One of my first jobs out of high school was a company that manufactured, sold, and installed the 60,000 PSI tubing and fittings.

[@NotHPotter]

Not a job where you test for leaks with your hand.

[@Sharpless2]

@@NotHPotter oh lord hight pressure injection injury here we go...

[@StormGod29]

The ceramic wear tiles are almost certainly sintered alumina. They are the standard wear tile material for abrasive materials handling. Quality varies (of course) but really good ones will be 9.5ish on the Mohs hardness scale.

[@glechrem]

I thought it looked like a piece of spacecraft heat shield

[@dan3a]

"Scratches start at a level 6 with deeper grooves at level 7" -JerryRigEverything

[@clone734]

Yes

[@sopmodtew8399]

Yes

[@gabrielflorea8124]

Stolen

[@dan3a]

@@gabrielflorea8124 from Jerry rig everything ?

[@gabrielflorea8124]

@@dan3a I mean, sorry if I came out rude, I didn't mean to, but you stole a top comment wich says the same thing (I understand u can have similar ideas)

[@connor8469]

We get a new character to the water jet lore

[@ohcaptainmycaptain3478]

The plot thickens...

[@videoliker9540]

"this material can wear down topaz to a. flat surface" Me: I wanna eat it.

[@financefanatics866]

The hardest material looks like tasty. It gives me CAKE vibes......

[@thestupid7281]

you mean the um marshmallows and asphalt

[@electronicsNmore]

Great video! Always thumbs up.

[@Ganoninos]

The lost comment

[@ruswanson9892]

Woah

[@notanthony9170]

Wow

[@johnweber4504]

Oh god I’m so tired I looked at the triangle thing and thought about how awesome the pie would taste

[@valthorix7347]

Dark chocolate and marshmallow pie mmmmm

[@buhgingo2933]

@@valthorix7347 forbidden Oreo bark

[@marothastuga2552]

I dont think its cause youre tired. Its just how your mind works

[@johnweber4504]

So I’ve been eating pie more often recently... I think this may have been an influence. Also key lime is the best, no contest, just fact.

[@buhgingo2933]

@@johnweber4504 preach

[@MasterAxel937]

I saw waterjet and got excited. The waterjet I work with doesn't use an abrasive. My waterjet trims product that comes by a conveyor with a .008 orifice at 60,000 psi. This was an interesting video to watch!

[@RobertMihalache]

So impressive how resistant is that thing. Thanks for sharing

[@Robster-Craw]

My wood that can only be harvested in the morning is harder than that ceramic.

[@gary1471]

Wait a minute HOL UP WHAT THE FU-

[@hamkahamham4681]

what kind of wood? an atomic size bonsai?

[@cedrick25]

Anyone's morning wood can instantly get to 11 on moe's scale

[@generalblue5592]

@Nicholas Indelicato fellow user PogU

[@uyghur-zv4fe]

@@hamkahamham4681 lmao he doesnt get it someones gotta tell him what it actually is

[@darpsy9808]

questions everyone has 1) Who is the intern? 2) Did you find someone with the magic tongue who can do the lick test or did he learn the magic behind it? 3) How u gonna just spring him up on us like that??

[@terminuht2627]

I second all of these questions

[@DanielRichards644]

4) Did Mitchell have to Lick Test the Intern to confirm the Interns Capacity to perform Lick Tests?

[@dragonfire5781]

5) all the chemists: which ceramic was it?

[@GogogoFolowMe]

5) Does Mitchell can communicate with the intern by licks ?

[@Julio-jm8ld]

I think its the producers not wanting him to lick things after that pipe. He's the main star of the show. Insurance company goes crazy when he licks things. So to keep the producers and insurance company happy you get someone that can be replaced.

[@zel206]

"obsidian is the softest material we've got" me a minecraft Intellectual: *visible confusion*

[@mrarithefox]

Bedrock is destructible in real life :v

[@kennethapalisok8764]

@@mrarithefox everything is breakable if you have a black hole

[@looof3719]

Diamond breaks easily, it's the hardest, not the strongest. So what is really real here ;) It just bonds between atoms in a crystal, steel could break diamond EZ or just a hammer.

[@kennethapalisok8764]

@@swordman-ci8ry wot

[@babypig9481]

That lick test was on point

[@user-dt3zn1uo9g]

"My shaft is about 3 inches shorter than normal" "That's a little exaggerated" Hahaha

[@nilstu]

Bogdan Blagovirniy

[@McGowanForge]

I'm surprised you guys haven't cut a boat in half and repaired it with only flex tape™ yet, come on guys

[@andreasu.3546]

That's a lot of damage!

[@sliceofbread2611]

we all know that a boat is the natural enemy of a waterjet..

[@Electric0eye]

I appreciate the lick test, it was the only way to be sure.

[@MrYport]

5:35 its wild how even the deflected spray just eats through the wood

[@questionably_xavier9177]

*my teacher looking at my work “It looks terrible but it did it”

[@oscarzt1652]

im pretty sure the 13 year olds who used to smoke outside my college were harder

[@popanollie1]

the little skater kids? that was me, and i was 12 lol

[@JRHunter-ys5ft]

@@popanollie1 I was 10 o-o

[@VergilTheLegendaryDarkSlayer]

I bet there's harder cow turds than them

[@user-dt3zn1uo9g]

Imagine having to use terms like "Sixteenth of an inch" instead of 2mm

[@--_DJ_--]

@@user-dt3zn1uo9g I'd take freedom units over metric any day. I can picture a 16th, 2mm, not so much. It's all about what you are used to, and I'm from Canada, not the US.

[@b_b_w]

Wow I was surprised about the quartz, but the topaz blew me away!!

[@grumpyou1138]

Good demo of how the stones for the pyramids were cut.

[@DrakeDragonheart]

Send the ceramic piece to Matt at DemoRanch!! I bet that would make an awesome piece of home made body armor!

[@David-if2hj]

Except those plates prolly cost about as much as body armor

[@paulimans]

fadeAway its not the point

[@joshmccormick8615]

Hell yeah

[@outragequitter5027]

David I don’t think you quite understand Demoranch lol

[@Outland9000]

Some armour plates do use ceramic.

[@tylerharman3500]

*this will be the hardest thing we have cut*, Me trying to mine bedrock.

[@builderdog3875]

that a creepy profile pic lol

[@Zvxers7]

WHY DOES YOUR PFP LOOK LIKE BBH SKIN???

[@amvymavy]

@@Zvxers7 what.

[@ausizigzagun7418]

"Obsidian is the most softest material we have" Minecraft players: impossible!

[@xcakl2313]

@Hank the haybot pppsssssst you can break those with a good gaming chair

[@EweChewBrrr01]

5:43 It looks like a slice of delicious forbidden pie.

[@IIIRotor]

that looks like the ceramics we used in Bullet-proofing on some Desert-Storm mine-sweepers...

[@wawan8759]

Tusk II armour? Reminds me of it since these are ceramics too

[@datkitgirl7338]

1:28 Forbidden cake

[@jub5193]

I loved the lick test...

[@TheAdvertisement]

Never have I been so interested in relearning about the Moe's scale from Earth Science.

[@BradGryphonn]

Magnesite has a Mohs of around 3.5. However, when processed into refractory bricks, I believe it becomes much harder. I wonder how it would survive?

[@gnostaoticanarchangautalch4225]

DUDE THAT WAS HIGH QUALITY EXPENSIVE QUARTZ.

[@McNooby142]

i thought you could usually get quartz from the nether? (from minecraft)

[@hellodumplings8564]

The machine is probably more expensive than that. Don’t think they’re even care.

[@user-lm1gl5dg5y]

Quartz is not that rare and expensive. Also that crystal was beautiful, but they didn't destroy it completely, just trimmed the bottom.

[@Skeleton_]

I heard them describing what Hard Tack feels like, didn't expect it to be that hard!

[@MrT6nis]

The lick test made me smirk but the lick test error made me laugh. He still has a long way to go and much to learn.

[@Zondarrk]

So early the obsidian is still liquid

[@donnellhaight267]

“Obsidian is the softest thing we have” “Confused Minecraft noises”

[@ZoofyZoof]

Diamond is not a suitable material for tools or armor.

[@Jeffasaurases]

@@ZoofyZoof tell that to a drill bit

[@ZoofyZoof]

@@Jeffasaurases You know for a fact I mean pickaxes, axes, shovels, etc... Diamond's atomic structure is not suitable for being made into these things, it just doesn't work. It's not effective at all.

[@Jeffasaurases]

@@ZoofyZoof r/woosh

[@ZoofyZoof]

@@Jeffasaurases How was I supposed to know what you said was a joke?

[@UnaStamus91]

Ngl that ceramic looks delicious😋

[@isaacsrandomvideos667]

Nothing beats binging the fh2 and fm4 soundtrack and some waterjet channel

[@Bamfhammer]

Was there an intern showdown that included multiple taste tests? We need footage of this.

[@bluered1322]

That's a cool demonstration of why you can't cut too fast. I like the rare educational waterjet channel videos lol

[@zetfet1122]

The lick test at the end made me sub

[@ShamblerDK]

Carbon nanotubes are actually harder than diamond. We've created several materials, which break the top end of the Mohs scale.

[@justlamb6094]

0:15 when he says all the way to the top he kinda sounds like mordecai from regular show

[@itskalbtw]

OMG I JUST REALIZED

[@wizardoftrees8424]

Oooh

[@jay-tbl]

Me at 10: alright its the weekend, time to catch up on my sleep and go to sleep at a reasonable hour Me at 3 AM: watr jhet

[@LShaver947]

Whather jehct

[@ronaldnixon4689]

Pretty cool experiment

[@Nathan-ok1gq]

The forbidden piece of cake.

[@DanTheMan1776]

You guys should try cutting tungston carbide. I work at The Ultra-Met Company and we press tungston carbide parts. It goes into the press as a powder, gets pressed into a solid and then after it goes through the furnace, its almost as hard as diamond.

[@Sharpless2]

The waterjet nozzle is made of Tungsten. It will cut it but it will probably take hours for a single inch. Im pretty sure they did a video on this before. Tungsten is some mean stuff.

[@justjohn2146]

Quartz:**one of the hardest materials** Minecraft players:impossible

[@IrishLegacy93]

Lmao ya boi broke down the cost per run and you were like yeah! Were done! Lmao love it

[@prihaps]

The lick test made me sub

[@yaykruser]

Try one of these Tungsten cubes from Midwest Tungsten, Taoufledermaus shot one, and the bullet didnt do much .

[@crestfallensunbro6001]

the setting they used for the ceramic was the tungston setting and i couldnt go through, they had to slow it down. so the ceramic is way harder than the tungsten

[@LiterallyRain]

Tungsten is only between 8 and 9 on the hardness scale.

[@mauirandall8176]

I got some tungsten electrodes from Midwest tungsten, the pigment on the ends aren't great,

[@triynizzles]

Why does the water jet have different settings for different materials? What is it change the PSI and feed rate?

[@andrewesther4705]

Changes the amount of media, feed rate, and accounts for different nozzles.

[@genegarbis8746]

How often do you replace the nozzle? Can you change the cutting medium ?

[@juruna00]

bro the ceramic looks delicious

[@mushy5982]

*when water cuts tungsten and I can’t even break a pencil*

[@jaggns5774]

if its any comfort, the water doesn't do shit, just like you it uses tools, and so should you

[@adammogk8094]

How would a large ceramic ball bearing fair against the waterjet? I'm interested to see if it's smooth exterior will deflect the jet rather than allow it to cut through. Or, if it does break through the exterior, how long will that take?

[@the_undead]

The biggest issue with ceramics is once it starts going it just fails immediately, with the vast majority of different kinds of steel this is not a problem.

[@monpekokero]

The happiness on his face after the lick test killed me

[@petespencer-smith5059]

Isn't the material used in the water jet lower down the Mohs scale than the composite material you were cutting through? Wouldn't that imply softer material is able to scratch harder material?

[@Luke-pg9pk]

It's not that one can't scratch another, it's just that one will take more damage. The garnet used is less hard, but is dispersed throughout the water flow and theres far more of it than the ceramic. The garnet powder becomes further destroyed, but it is still able to abrase the ceramic.

[@koga8100]

3am and this pops up. Don’t know about y’all but my recommendations speak to me

[@DeXoDeD]

Intern involvement made me laugh so hard I almost woke up the babies XD

[@_Typel_]

2:31 Does this technically mean that the "garnet abrasive" is stronger than all of that..?

[@karozans]

No. They use garnet sand because it's really cheap and easy to find. The scratch test really is not a good test at determining hardness. If you take a material science class, you will find out that the crystal lattice of certain materials are strong in one direction, but stronger in another. Take graphite powder for instance. Graphite powder in one direction is almost indestructible compared to other materials, but in another direction it's one of the weakest carbon bonds. Garnet is hard, but not super hard. Most of those clear precious stones like garnet, ruby, emerald, topaz, and so on are all pretty hard and somewhat far up the scale close to diamond. Even if you took a piece of diamond and rubbed it with a piece of hardwood, eventually you will start to see the diamond start to show signs of wearing. Eventually you would have a particle of carbon in the wood, knock out a carbon atom on the diamond. If you blast something hard, with something softer, eventually you will get through it.

[@terrystokes2948]

KZbin just asked me to rate this video (i just watched it earlier today). I said it was Excellent, Informative and Useful! Because it was. I use to be a machinist so this is very interesting to me.

[@stompchunkman4248]

Hardest material: men's hearts when rejected but they don't cry.

[@livedandletdie]

A woman's heart... Oh wait that's the coldest material...

[@elcuhhh8761]

How do I apply to be a professional lick tester? Can you guys certify me

[@somethinspacey7960]

obsidian quartz topaz some cake

[@TheRealDarrylStrawberry]

I've seen this thumbnail for a long time and only now realize thats not a piece of cake.

[@gingerale6634]

I want to see you try this with just water, I can’t find anyone trying that anywhere, and if water can cut a diamond it would be outstanding

[@KaitouKaiju]

The water jet needs garnet to work Water alone doesn't do much

[@cecille5833]

“ hardness is how much it can withstand friction, toughness is how much it can withstand external force”

[@artiome9893]

To cecil le and other 24 who did thumbs up...Friction = external force. Toughness is the ability of a material to absorb energy and plastically deform without fracturing.

[@ivan-Croatian]

That ceramic looks like a tasty piece of chocolate cake.

[@pamelah6431]

"Right?" "Uh, yeah." Good interview.

[@Demidar]

i always say it like this, the top of the "Moe" scale is the most hardest xD

[@liamsummers1599]

The ceramic composite looks like rocky rode chocolate bar

[@coolestgamenerd]

The forbidden candy.

[@sircharles9715]

I thought the standard test was rockwell hardness test, which is 1/8in steel ball, or they have diamond tiped one for harder surfaces. It measures indent and gives you a value for measured dent on smooth surface.

[@toddmaek5436]

Question, what is the power consumption of the water jet itself that you are using?