World’s Sharpest Obsidian Knife
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- เผยแพร่เมื่อ 27 เม.ย. 2024
- We teamed up with @NFTI to make the worlds sharpest obsidian knife that beats a scalpel. We used our 60,000 PSI waterjet to make a very thin blade.
We just did another video with petrified wood!
• World's Sharpest Petri...
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What kind of handle should I put on the knives I try to make with this obsidian??
African blackwood or ebony
any type of burlwood
TKOR SUCKS WITHOUT YOU. JUST SAYING!!!
Good to see you Nate!
purple and black swirl resin ?
I definitely thought Nate was still a cardboard cutout at first
When Nate showed up for real, you can see the cardboard cutout for a split second
Same
I didnt realize he was real until like 5 minutes in
I'm so happy to see him on a channel similar to the one he quit because of bad management.
Look at the background at 4:31 lmao
Nate going from a cardboard cutout to an actual person was a jumpscare for the ages
The thing that makes obsidian 500x sharper is the fracture of the material itself. You need to KNAP it to get the maximum sharpness. Simply sawing bits off of a block leaves you with the same issue as steel knives
Except knapping doesn't give a large enough workable edge to exploit the sharpness.... It's all well and good being a molecular thickness edge... but if it's a shitty mess of hundreds of small jagged notches on a lump of rock an inch thick, it's not going to function like a metal knife.
Obsidian is overhyped. It's only advantage cannot be properly exploited into practical tools, hence why metal weapons and tools were such an upgrade the instant they arrived in South America. A durable, consistent edge is far more value.
@@AllThingsCubey Tiny obsidian blades are used in high end eye surgery as tips for the bisturi. Since the blade is a single molecule wide, it leaves extremely sharp and clean cuts that can mend without any scarring.
Aside from that you're right 😉
Is that an obsidian knife? As a volcanic glass, it is very fragile, and would probably not be very suitable as a weap-
"and then i'd hit them with the wooden baseball bat in my other hand"
whips out baseball bat
I got this joke and I'm happy
The vegetables I cook don’t typically fight back
@@BluBird12 I don’t get it
So, I do writeups and work with history and archeology channels on content on Mesoamerica (Aztec, Maya, etc), where obsidian was widely used for tools and weapons. You guys acknowledge that trying to cut out a blade with a waterjet like you did last time isn't gonna actually give you the sharp edge Obsidian is known for, but angling the waterjet or even knapping the blade after it's produced won't do it either, at least not to the same degree obsidian blades were actually produced in Mesoamerica: I'm more informed on things like Architecture or aqueduct systems then obsidian production; but the way they did it is the prismatic blade method, where you take a "core" piece of obsidian, and then strike which flakes off whole, entire blades in one strike, creating an insanely fine, single continuous edge along where the fracture occurs.
If you're taking an existing flake/blade and are doing traditional knapping to make many additional smaller fractures along the edge (which mind you the Mesoamericans also did, but usually to things like flint, or for ceremonial, not-for-actual-cutting obsidian pieces called eccentrics), then that's not gonna be as sharp since it's not one flush cutting edge and you're likely chipping parts of it in the process. The waterjet isn't doing it either, since while it's in theory producing one continuous edge, it's probably producing many microscopic chips and fractures along the edge as it travels (which you guys even concede in the video) since obsidian is so brittle, rather then actually forming a single edge as if you struck it off in one piece using the prismatic method.
I wanna be VERY clear here, that, again, I am not a material scientist or a geologist, and Obsidian blade production is not one of the specific aspects of Mesoamerica I'm particularly informed on (ask me about how cities were laid out or how Aztec political systems work and then I can give you 12 paragraphs!) but yeah, If you wanna do this with a waterjet, you should be using the waterjet to cut out the initial core you're then striking blades off of, maybe you could try to work with a geologist or a physicist to find the ideal starting core shape to produce the best blades? There might already be some research on that as far as what the best starting shape used historically was, but again, not the subtopic I tend to look up research papers for.
But how WERE the cities laid out? 🤔
Enquiring minds need to know!
@@bigchooch4434 Mesoamerican cities tended to have a central, dense urban core of monumental architecture: You'd have palaces, temples, ball courts, noble housing, and other civic, ceremonial, and communal structures., which were richly painted and decorated: when you see ruins today, you're seeing the grey inner fill of rough stones and mortar or the brickwork over them, usually not the clean stucco and then colorful painted frescos and intricate reliefs, sculptural facades, friezes, and other accents which were over them, which are only preserved occasionally: Look up the frescos found at the residences of Teotihuacan, or the Rosalila temple at Copan, or the paintings made by Scott and Stuart Gentling of Aztec cityscapes to get a feel for how they would have looked in their heyday.
These were generally organized around open plazas, with their arrangement aligned to maximize things like public viewing or human traffic for ceremonies and gatherings, or for ritualistic alignments: For example, the Maya E Group, for example, is a common arrangement of 3 structures that when viewed from another location, align with astronomic phenomena at certain times of year. Or how at Teotihuacan, the San Juan river was recoursed through the city's grid layout (which is unusual, I'll get back to that) to appear perpendicular to the Temple of the Feathered Serpent and the Ciudadela complex/plaza it's located inside, as those structures were heavily associated with water (the plaza even capable of being flooded like the Roman Colosseum), so when viewed from specific angles it would appear the river is coming forth from those structures. Speaking of, complex water management systems were also quite common: At Tikal, for example, there were a series of massive reservoirs connected to one another, with dams and channels which allowed them to flow into one another if needed to prevent flooding; with structures and plazas in the surrounding area having drains to similarly redirect rainwater or water from floods into the reservoir network. Some of these reservoirs even had advanced filtration systems, and some of the connections between them even had switching stations to choose how the water flowed.
Much like how the structures themselves in sites today are misleading with only the inner grey masonry being visible, modern archeological sites and their maps are often misleading in that they exclude many structures which are either still buried or destroyed. Compare tourist site maps of sites like Teotihuacan or Palenque which only show major structures for visitors, with the archeological surveys of those sites from Millon and Barnhart, respectively: those both show hundreds of additional structures tourist maps do not.
Significantly, they also exclude the suburbs around the urban core, which is the other key half of Mesoamerican urban layouts: While the urban core has a high density of planned structures for elites, ceremonies, or groups, which are built of stone and have fancy accents and decorations; the suburbs that surround the cores are low density, commoner residences interspersed with agricultural land (sort of giving a similar mental image to suburbs today, with homes spaced out between greenery), and are less planned: Commoner residences would have been built out of wood, straw, or adobe brick, usually on a stone foundation, with homes in so called "patio groups", with 2 to 4 homes built facing one another around a sort of mini-plaza. These suburbs would radiate out from the site core, gradually decreasing in density, as the area became more rural, without a clear end point, which makes defining the limits and populations of Mesoamerican cities quite iffy. Also, while these were "less planned", then the urban cores, much of the area the suburbs covered would still be landscaped (not necessarily, deforested, though sometimes: When tree cover was kept, it was in managed groves with a cleared underbrush for agroforestry and shade), and some would have "mini cores" with temples and some elite residences. Some large Mesoamerican cities, particularly Maya ones, had absolutely massive suburban sprawls covering dozens or even hundreds of square kilometers, like at Tikal, El Mirador, Copan, and Caracol, to the point where in the former two examples, you literally had multiple different city centers connected via the sprawls into Megalopoli. Tikal's in particular had a significant amount of infrastructure across it's sprawls, with palisades and more hooked up water management systems for agriculture and flood prevention and drinking water.
What i've described is the "typical" large Mesoamerican city, but obviously there were exceptions, some examples being Tenochtitlan, Teotihuacan, and Palenque: The Aztec capital of Tenochtitan was located on an island (which was then expanded via grids of artificial islands used for urban development and as hydrponic farms known as chinampas, which actually made up most of the city's area by the time of Spanish contact), so it had a clear limit, though in the city there's still a more urban core and surrounding suburbs. Tenochtitlan also unusually had some of it's structures on a grid layout, contrary to the plaza based ritualistic planning I described. This is attributed to a specific urban revival of Teotihuacan's city planning, which was even more unusual: Almost the whole city layout was one giant urban sprawl on a planned grid, which covered 22 square kilometers, entirely composed of palaces and temples, organized around a central road, rather then plazas. The city did have suburbs, but they covered a much, much smaller amount of space compared to the urban area and most of the city's denizens lived in fancy palaces. For Palenque, the city was founded on a relatively small flat area of an otherwise steep hill, so it has it's commoner residences on terraced acropoli (which themselves weren't uncommon, moreso for palaces and temple complexes tho) packed tightly next to/alongside it's elite and ceremonial structures, I guess more comparable to the typical ancient/medieval city in Eurasia where you had everything packed together.
I wish I was able to link images of all of this, but youtube tends to act iffy when I do that, so if you want some let me know and we'll have to figure something out.
As an archaeologist, I agree. Strike a flake from a core and you get the thinnest edge possible. Further retouch or knapping is good for shaping tools and for sharpening a dull edge, but you'll never achieve an edge as sharp as the initial flake. Fun video though.
@@MajoraZ thanks for the long write up, I was actually rather curious
@@MajoraZ I wasn't sure if we'd get an actual write up, I'm so glad you actually took the time to write all that out.
This type of sharing of niche knowledge is what the internet was made for.
What a perfect collaboration. TKOR messed up good when they fired him. Nice to see Nate out on his own. Free from the chains of TKOR.
Why did they fire him??
They fired him?
@@daniela9594 poor veiwership and creative differences
@@dynamitedingo8183 I don't think it was Nate that was causing poor viewership
@@dynamitedingo8183 nate was great on TKOR. What a p*** take. Im sure Grant would have something to say about that and not be happy.
Nate always did the stuff everyone was thinking needed to be done. Not the strange lady that looked like she was on drugs half the time.
Seeing Nate makes me nostalgic as hell and miss Grant the man. RIP TKOR
Is that the guy that exploded into the ground a while ago? Can never remember his name or what channel it was.
@@skrimper
Hang gliding accident.
Also had a bit of an issue with setting off an explosive reaction without permission in Canada.
I don't recall every detail, but it's a minor rabbit hole to follow.
@@skrimper The thing you replied to had both his name and his channel? You slow?
@@SCh1m3ra existing without permission
@@troliskimosko Lmao
What makes obsidian unique is that it can be "sharp" down to the molecular level. Very cool substance.
Like when Death sharpens the Scythe in one of the Discworld books, I forget which one.
That obsidian really was exquisitely patterned! Had no idea it was so beautiful!
Jesus Christ died for your sins please repent for the kingdom of heaven is at hand ✋ 🖊 🤚
@@jesuslovesyou2616 keep spreading that good news brother! Jesus is the son of God come in the flesh gave his life in our place and shed his blood to pay for our sins. Then rose from the dead and is coming back for us soon!
@@clark987878 its a bot
It's the way it fractures that makes it sharp. You need to know how to strike the stone to get it to feature into one long thin peice. I've been flint kapping for only a couple of months but I can confirm that a true obsidian blade made the traditional way by using a Hamer stone and a core of obsidian is insanely sharp! I've been cut and didn't know until blood got on the stone I was working on.
Gloves laugh you 😄
How are we supposed to trust that this is even real obsidian without Mitchell licking it?
Exactly
He isn't licking it precisely because it is in fact obsidian. He might be dumb but not an idiot who will instantly bleed his tongue out if he licks it. That's how you know it is real.
That was nice guys. Love seeing Nate helping with things he is really into.
I miss the days before Mitchell's kid brother was the star of every video
I’ve accepted the change,,, and they are doing their best,,,,, but damn I wish I knew why they forfeited their entire channel, that they spent a decade building….. why?
I don’t think I would have ever started watching this channel if not for Mitch & Dan…..
so strange
I agree. I have all but stopped watching this channel because he is so damn annoying.
I unsubscribed because it got so annoying and unfunny.
I’m not sure how they’re made but obsidian scalpel blades are used in things like eye surgery where precise sclera cuts are too demanding for steel and insurance companies don’t want to spring for diamond blades. I bought a few for kicks a few years ago, very cool, very fragile, absurdly sharp
If I’ve heard correctly, obsidian is so unbelievably sharp down to the smallest atom that it cuts between cells while a scalpel just cuts through them. This is also why you would heal faster from being cut by obsidian
More like it CAN cut between cells.
Obsidian was used for scalpels but it isn’t used as much now because it can easily be broken. Leaving the patient with sharp shards inside them that were hard to remove.
So, same like one eats tomato salad with some obsisian knive chippings in it? :D
If a scalpel could really cut *through* the cells, I'd call it one great scalpel. Typically they should be just crushing the cells for good.
As for cutting "between the cells", that's just tearing them apart, not cutting. Maybe in theory and with nanobots?
Either way, any clean cut with a sharper object usually is much easier to heal than the one taken with a dumb blade. Whenever I'd cut myself with my knife at its best sharpening, some of the cuts could be barely detectable at all - you can even miss the fact of having had being cut by such a blade at first.
@@getsideways7257Obisidian cuts between cells as it blade is 1-20 atoms wide
I'd love to see a rock knapping series. That would be dope. This was a great video, dudes.
The super sharp obsidian blades aren't knapped, they're made via the prismatic method: you flake singular long blade pieces off a core with each strike, so the blades have a continuous edge; vs knapping where you're making multiple strikes on the edge of your blade which results in some chipping and not one flush cutting surface.
@@MajoraZ Sure. I was just basing my comment off of what was said in the video. Thanks for the info', tho'.
@@kevjohn96 prismatic is the complicated way of saying it, as a knapper we just say blade cores, so if you're interested in that technology just look up blade core tech, you can make 100s of blades off of like a few good cores, it's insane how economic they were for their times
Where have Mitchell and Dan been? I haven't watched the channel in a long time.
I'm wondering the same!
They got caught up in the special military operation going on in Ukraine
It's been a couple of years since I watched this channel and I've gotta say that Mitchel and Dan look a lot different than I remember. Also gotta say that I'm kinda glad you're not just cutting up people's garbage anymore.
Man, I know these guys are doing their best, and it isn’t bad,,,,, I just really wish I knew why the shift was made….. I’m not sure I would have ever started watching this channel without Mitch & Dan…….
I like the new guys too. They're doing a good job
dang now you can cut an atom
As a flintknapper I gotta say,,owe,,painful to watch. On the flip side you knew pretty quick that your experiment was a no go. Entertaining regardless.
I would be wearing a mask while grinding obsidian (I don't know if they were, I didn't see it if so). Silica dust is incredibly dangerous - it can give you permanent lung damage.
Great colab guys, awesome to see Nate on your channel, sweet knife 👍🏼👍🏼👍🏼👍🏼🇦🇺🇦🇺🇦🇺🇦🇺🦘🦘🦘🦘
huh.. I had never thought of using a water jet cutter to make obsidian blades.
Now I can't stop thinking about aztecs crafting their maquahuitl swords in seconds with a water jet lmao. I mean they lived surrounded by water, imagine what crazy things they could've done with one of these.
I think the big thing with the blade chipping on the belt sander is using the platen (the belt support thingy lol) take that off and use just a tensioned belt with no support. Where I use to work was a glass plant and the edgers were just belt sanders and that had no platen and it’ll sand it without chipping the glass, it actually had to, cause it was for glass going to be tempered, and if there’s a chip the glass will bust during tempering or when cooling after tempering.
Wheres Dan and Mitchell at? Channel isnt the same without them
Agreed.
its not even the same channel.. and the guy who made this video didnt even make the last obsidian video...
Did anyone ever figure out what happened to the old guys? :(
What happend to Dan and Mitchell?????
For real, I unsubscribed last year when they disappeared
*no dan and mitch, no waterjet channel*
As someone who has never been on this channel before seeing Nate's cutout transform into his IRL counterpart made my mind's ping spike by a thousand
That was just your console starting a download in sleep mode.
I've gotten glass-thin cuts of tomatoes from a knife that I got from Walmart for $10. It's not just about how sharp your knife is, but a combo of how gently you can cut it AND how sharp your knife is. If you get the technique down, you can do it with a dull knife, too.
Hooray for spectrums.
8:46
“One comment that we wasted food, walughwsuhgh, wewouldishcis this stuff is delicious.”
Inspiring words from an inspiring man.
are you sure that knife isnt gonna open a portal to the nether?
Nates guest appearances never get old, either cardboard or in the meat.
“In the meat”? You mean in the flesh.
@@jch8175 🤓
5:09 I love it when my favorite TH-camrs mentions Kentucky, or comes to my hometown in Louisville. 💪🏼
I died when the second Nate was real! TKOR crew are my childhood heroes. RIP Grant. You started a legacy.
And here I thought that we'd see Mitchell and crew back... Whatever happened to them, and why don't we see them any more? Did they seriously get fired?
You need a diamond grinder like a cabbing machine to grind that awesome rainbow sheen obsidian.
I like obsidian because of its transparency, it seems that it will shine with the light! 😍
The nate transition from cutout to person freaked me out lmaoo that's awesome tho. I'd love to make an obsidian blade someday, let alone this sharp!
Dude seeing Real Nate right after Cardboard Nate genuinely made me jump a little. That was fucking great
For grinding and sanding obsidian, keeping it cool is key to prevent fracturing and chipping out.
It can be heat sensitive.
I would love to be able to have access to a water jet for stone cutting.
Wow your channel is pretty cool maybe someday you could visit them lmao
Your channel is awesome and you clearly have worked obsidian more then I have, but I don't believe them grinding it to an edge would produce the super sharp edges obsidian blades are faous for: I do stuff on Mesoamerican history/archeology, and they (Aztec, Maya, etc) made blades via the prismatic method: you flake singular long blade pieces off a core with each strike, so the blades have a continuous edge. If you grind it or even knap it, you're producing many more fractures along the edge which won't make it a flush cutting surface
@@EddieBurke that would be super neat!
@@MajoraZ thank you for that compliment! And you are right. Really the sharpest you can get it is from breaking a chunk of obsidian and if you get a fresh sharp piece. And you're also right, knapping the stone, it becomes more serrated but still more sharp than that of grinding it but not as sharp as the initial break.
It's amazing how sharp that stuff is.
I just broke some large pieces recently looking for colored layers and had to find a safe place to put the freshly broken pieces.
That would be a good challenge to see how relatively sharp I can grind an obsidian piece without knapping it.
@@WorldofRockhounds I broke a chunk near my flower bed and knicked my hand randomly for years
You should try using diamond whetstones. It still won't give the molecule edge but it will be an obsidian knife that is conventionally sharp.
Helll yeah been waiting forever for this
So basically, “Worlds Dullest Obsidian Knife”
LOL. Good job though. In the future, I would not recommend sharpening it with a belt sander. You cannot do it that way. Flaking is the only way I believe. That is why steel is much better. With steel, you can shape it and design the blade. With obsidian, you are at the will of however you chip it.
I think I did a better job on a cheapo 440A steel knife with just three stones - could cut hair too and slice grapes.
Guys, please hire Nate into the team, i really miss him since the real TKOR...
In the history of Mexico, obsidian was one of the main materials used for weapons and knives...
it's great to see old materials with modern processes.
@Vegvisir92 Unfortunately, the main problem with obsidian is its fragility, very sharp but brittle...
welp i think your water cutter is sharper than the obsidian
Come on man... where is Dan and Michelle
Maybe you can try sharpening it with a wetstone
Also have you tried to sharpen a steel knive with a warerjet the same way you did with the obsidian one ?
It won't work with obsidian. You're not going to get it any sharper than a steel knife with a stone, with the added disadvantage that you're going to be chipping it away with a stone and not getting a stable edge. Obsidian is terrifying sharp when knapped, but that's really the only good way to get it sharp.
For those who wonder, the music in the beggining of the video is appreciate that by david cutter, they give the name of the artist but not the actual track
1:11 THANK YOU! i searched so long in the web cause i want too know how they actually sharped their stone knifes back then haha :D. Finally i know
I love this channel
Can you try sharpening the blade with Japanese water stones or ceramic stones? I feel like it would produce a better edge than a machine and won’t chip it as much.
Jesus Christ died for your sins please repent for the kingdom of heaven is at hand ✋ 🖊 🤚
@@jesuslovesyou2616 democracy rules monarchy droolz
@@jesuslovesyou2616 also im not christian, so no.
Why now? Why here?
5:03 Nice that made my day
Wow this is amazing... Could you do a whole one piece obsidian thing with the handle integrated? Or MUST I make a handle?
OK I've been away from this channel for a while.. where are the original guys who made the channel?
Hey, little advice. Blur that key out. the footage you took of it makes it incredibly easy for someone to copy it and empty your PO box.
I've watched enough LPL to know you're exactly right
_brought a nate cardboard on the intro_
stop this is too funny 😂😂
_actually brought the real nate in the shop_
*OOOOOHHHHHH*
Congratulations for creating the world's first obsidian saw!
Where is Michael and Dan?!?!?!?!!
Where are the original guys. Not to crazy about the new people. Loved seeing Nate though
I've seen a couple videos where the way they got the legendary (or should I say l-edge-ndary) sharpness was by breaking/fracturing/shattering the obsidian. Presumably you'd get better results if you broke it like that then used the waterjet to make it more knife-shaped.
0:37 That got me for a second there!
I miss when Dan and Mitchell made videos :/
It would be cool to send a slice to a pro knapper and see his blade from that beautiful obsidian.
agreed , please send it this way !!!
Bruh Nate worded out exactly what I was thinking the problem with the water jet edge was. it's just not flaking it the way it should be flaked. it needs to break apart so it can leave behind the legendary sharpness obsidian is famous for.
"Music by David Cutter".... how very apt!!!
Let’s just appreciate the fact that he cut an obsidian with water
"And here i was using a diamond pickaxe like a sucker"
Mama Mia I miss Dan and Mitchell
What happened to them where did they go?
You added Nate, so earned my sub!
David Cutter was a very appropriately chosen musician
How did this guy break obsidian with a waterjet? I thought u needed a diamond pickaxe to do so...
💀
Where are original guys?
Thats very cool. But as it is volcanic glass, it's very fragile, you see, and isn't well-suited for use as a knife.
I get it lol
I was today years old when I found this channel and I was today years old when I started loving this channel
Where Dan? What happened to the OG crew?
Few years ago WE? Dan and Mitchell made it not you
7:30: "that's tiny"
Naah bro that's huge and definitely have a great personality too...
Great video but that has to be the single most unsettling way I've ever seen someone eat a cucumber. You sir are a barbarian
Honestly... this channel is absolute crap without Dan and Mitchell... what the hell happened??
I mean, it's great to see Nate here... but really, without Dan and Mitchell you're going to ruin this channel like they ruined TKOR when they canned Nate!
A few episodes ago they show up outside the building talking through a vent. They say they are looking for their last paycheck. Fired maybe?
THIS IS ART!!!
To be fair, when making surgical grade obsidian knives they crack the obsidian of and the ones that get sharp edges are the ones used, so its already super sharp once its cracked/chipped away from the stone, they dont cut out a piece and sharpen it though, but hey whatever works
Could you try cutting the knife edge at the bottom of the cut on the water jet. That way instead of dulling it out with the garnet it would chip off the bottom and be sharper
I bet the native Americans had specialists that knew the angles and chipped it the right way like how chefs cut the right angles towards meat or carpenters cut the right way on wood!
You can sharpen obsidian on a grinder/belt sander but you need a belt with grit made of extremely hard material and running at a slow speed/low power and kept wetted with water throughout the process
Can you use a laser to sharpen the edge? hence the properties of obsidian are similar to glass?
it's thousands of times more brittle, most lasers would just cause microscopic fractures turning the edge to dust
I screamed when I saw Nate. I havent seen him since he disappeared from TKOR
Instead of a grinder, you should use something so fine that you are basically polishing it sharp.
3:38 Lmfao the Mayans mastered the water jet 💪
I love what you did with Nate. XD
This channel is king of almost accomplishing the title.
The fact that he doesn't move that cucumber to the side while cutting that tomato and let it just be on the way is just....... ergggggghhhhh!!! 😅
OMFG, I didn't know that you were in SLC! That's sweet
I love how the scaple myth persists despite it being debunked
I thought this was the older video. Imagine my excitement when i realized it is a new video!!
Could you make a video about "what will happen if you shot the waterjet with .22 bullet or larger" ?
We’ve wanted to do this. Need to figure out how to stop the bullet after it goes through the stream
Obsidian is my new obsession :) Nevermind steel ;)
I'd love to have obsidian countertops with those patterns, too bad obsidian is super brittle and becomes a scalpel if I chip the counter.
Idk if anyone else likes the sound of the obsidian hitting the table after the cut but I do lol asmr