Bismuth is a 2.5 on the mohs scale. In comparison your fingernail is also a 2.5 on the mohs scale of hardness. This knife may be beautiful but it's worthless to cut open even an envelope.
@@mattiaiacobelli9685 he clearly won’t use this knife for any food cutting. It’s art/experimental knife. A lead knife would be safer and harder at this time 😅
I think you missed the point. It is the world's sharpest knife made entirely out of bismuth. It is sharper than all the other bismuth knives in the world.
Bruh, he only used adjective’s and synonyms with a few more syllables than your slow ahh can keep up with. Only you would need chat gbt for to make a damn sentense
3 weeks ago I cut my calf open on a peice of carbon steel sheet metal that was stacked up in a junkyard. I was rifling through stuff looking for something, and I barely felt anything ... it was like if you brush against a little bush or something. I didn't notice until maybe 20 minutes later because my sock in my shoe felt wer and cold. I looked down and my entire leg was wet and blood had soaked into my shoe and my sock. When I took off the shoe the blood had seeped almost to my toes. The metal had made a 3 inch cut and scooped out like an inch of flesh. I could see the white meat inside after cleaning it up. I really probably should have gotten stitches or staples or something but I put one of those giant bandaids over it. It's just now kind of healed and filled in.
Yeah it's called promotion of video. You new to the internet. Your comment mirrors that of others. Why didn't you make a unique comment? No brain to do so?
Materials engineer here! Sharpness is something entirely related to machining and not the material it's made from! A material's hardness affects how long it retains the sharp edge, but appart from that, a steel knife can be as sharp as any other!
If steel is mostly iron and the sharpest u could make a steel knife is an edge with one atom thick. Wouldn't a metal with smaller atoms be sharper. Or an alloy of smaller atomic no metals. Genuine question. Tool maker. Amateur engineer
I mean yeah cos it’s stolen content. If you have nothing actually original or informative to add then just exaggerate and steal. That’s RU-vid currently unfortunately
The blade would lose its edge so fast the biggest issue from being stabbed with it is one heck of a bruise. lol Pepto doesn't fix that. That's likely an overexaggeration, but visually a beautiful knife.
@@Enderkauren37 do you steal other people's comment on purpose because you're mentally slow I can't think for yourself to come up with something original? 🤔
As a legit metal worker that works with bismuth every day, I can tell you that bismuth is extremely brittle. Guaranteed if he dropped that, it would shatter.
I’m seeing in the comments if anybody else immediately thought of Steven universe when he said bismuth “I am of one the strongest materials out there” -bismuth (I think that’s how the quote goes. It’s around the those lines.)
For those who don't realize: The actual knife is made out of stainless steel, he used bismuth as a layer on top for style.cause bismuth is 2.5 on mohs scale, same as our fingernails .
@@kuobah Literally no my guy. Did we watch the same video? Dude literally made a knife shape as a base for the bismuth to grow from and sharpened that after.
Anything can be sharpened to cut. The question is how long it holds the edge. Bismuth knife is essentially dull after first cut if you can manage that. You can see its cutting more with weight and momentum like guillotine than knife
Not even close to the world's.sharpest nice, a scalpel with a blade made from obsidian is probably the sharpest a knife will ever get. The edge is about 10 to 20 times sharper than that of a razor nlade
Obsidian is actually the worlds sharpest knife. And probably will stay that way. The only reason they aren’t as popular is because the only way to get that microscopic precision edge is by knapping it. Like natives did with spears and arrow heads and axes. Some even used obsidian. It’s not as simple as getting a square chunk of obsidian and sharpening it. The edges crack naturally into shape and it can get so thin that it’s transparent. Ridiculously sharp. The thinnest obsidian edge ever made was only three nanometers thick. Which is about the same as 0.003 microns. Now compare that to a standard 228600 nanometer thick razorblade and compare the two thicknesses. That’s insanely thin. Enough speed and that could easily cut a blue whale in half with little to no effort considering durability wasn’t an issue.
This short butchered the actual title of the video which is "world's sharpest *bizmuth* knife", not world's sharpest knife. It's a recurring joke of the video maker's. He named ALL of his knife videos like that
The real problem with obsidian knives is NOT that it's hard to get sharp. It could obviously be done by machines, that's just a mecanical action. "Natives" didn't have some magical techniques that we somehow couldn't reproduce on a large scale, it's just that obsidian fucking breaks. The problem with your thin edge of 0,003 microns is that it will be destroyed pretty fast when you will try to cut your blue whale, and you will end up with micro shards of obsidian blade in your food. The thinner the edge, the more brittle. Especially with obsidian which is pretty much glass. That's the real reason why obsidian knives are not popular in kitchen, nor anywhere if that matter. They are way too brittle, and their incredible sharpness isn't that much of an improvment in practice to justify taking a risk of shredding your digestive system.
@@bread2265 quote: "the only reason they aren't as popular is because the only way to get that microscopic precision edge is by knapping it" That's wrong. That's because they are brittle. Yes in his exemple he mentionned not talking about durability, but I took his exemple just to show how the very thing he decided conveniently to ignore is the contradiction of this first part of his comment. I could have well have taken the exemple of a random steak, just thought it would be a stronger exemple if I used his own.
I love how the narrator makes it sound like a master knife smith operation, but the guy is just making the knife with random objects he found in the garage.
If he wanted to say that this is the world’s sharpest knife that is made out of bismuth, it might be true. But then, you could say there’s the world’s sharpest knife made out of spaghetti and it would also be technically true (as long as somebody has already made at least one spaghetti knife).
Obsidian shards can have a cutting edge as small as one atom. Or to put it in layman's terms: It's so sharp that a scalpel looks like a butter knife, but sadly not for long.
I don't know if anyone here knows, but he ends up destroying/re-melting the knife back to regular bismuth. He doesn't keep it as a knife blade and it hurt my soul watching it happen. If I remember correctly (it's been awhile) I think he melted it because the handle was thick and hurt to hold due to the crystals.
I also noticed that he sharpened it until all the rough edge was gone, meaning back to where it was before attaching/coating the rough/sharp part. And I was also thinking how uncomfortable it will be to hold that knife.
@@jesssmith8773 I think it was more to show how beautiful the crystals form when he dipped the handle but didn't realize (hindsight) that it wouldn't function well afterwards
you can crack bismuth by forgetting it in your attic, i doubt it makes a good centerpeice much less useable tool. dont get me wrong, bismuth is extremely pretty, but you can blue some steel if you need some color rock in your life
@@shanetuma3845 yes and that's wrong, he's implying it's the sharpest knife in the world, and saying the material he uses to make this sharpest knife was bismuth
@@AndreeRockHardwords can go in a different order and mean different things in different context. He did technically say the same thing you just said.
This is not only not the sharpest knife but, it’s not as hard as most cheep steel. It won’t hold an edge very long because of its lack of hardness. It’s still super cool.
@@astriix7067my friend, bismuth is one of the softest metals on the planet, in order for a knife to retain an edge you need a hard metal (hence why high carbon steels are used). It very well could be the sharpest bismuth knife but that is probably because nobody wastes their time trying to make a knife out of it.
@@astriix7067Obsidian has the potential to be the sharpest material we know of, and usually is. Because it's glass, it dulls a little differently from metal, so the sharpest knife would be made of obsidian, and it would last longer as well if properly maintained.
Bismuth is a 2.5 on the mohs scale, maybe if you did a little more research before talking out of your ass, you'd understand how soft of a metal that is. You'd then understand you wouldn't have to weild said knife to understand how crappy one made from that material would be doofus.
I mean it's a shitty knife material but literally the video is just saying it's "the world's sharpest knife made of bismuth" which it presumably is as nobody else besides the person who made the original video and destroyed it after as it was a shit knife then Nilered attempted to remake it, with no knifecraft knowledge. it it the world's sharpest knife full stop no. is it the world's sharpest bismuth knife possibly
Source is a channel called kiwami japan... Also Its not the worlds sharpest knife. Its the "sharpest bismouth knife". He also does stuff like bread and plastic.
@@Raccoon_TheGreat No, Nile Red made a bismuth knife in tribute to the original Kiwami Japan video, because Kiwami melted the knife down, Nile remade it to 'redress' the loss of a beautiful knife.
Those black ethiopians did this first. Daily. In Kemet, Egypt to be exact. When egypt was began by the ethiopians. Whites were in neanderthal caves then. Black khoisan women with those slant eyes began the asian race. Buddha has cornrows in his first statues.
A mention of the creator would've been nice. The link in the description isn't clickable. This video is from Kiwami-Japan on RU-vid if anyone's interested.
dont, just because he said a couple lines of bs in the first half he still played the vid made by someone else, imo it doesnt make it much better that he credited, this is still content theft
It's a steel knife coated with Bismuth. It may be a great knife for all I know, but the Bismuth coating will fall of the first time you cut something deeper than the edge. So as useful as a painting for cutting bread.
No, its solid bismuth. Go watch the whole video, it's called "world's sharpest bizmuth knife" and shows the entire process from extracting the bizmuth to polishing the exposed edge He makes the actual knife out of a plate of bizmuth, then puts the crystals on.
@nicholashodges201 It has to be for purely decoration then. Bismuth is brittle enough that you should be able to snap that blade in two with your hands without too much effort, and even worse, it is only slightly harder than led. I'm sorry, but I fail to see the point in such a knife. Coating a steel knife would at least have left him with a knife that could be used as a knife.
Yeah I saw it the same way as you. Oh make a bismuth knife for funsies but why would you make a bismuth knife just to dip it in more bismuth? Rewatching the video it's really hard to tell. First there's the plate, which is shiny, smooth and chrome like. Then it jump cuts to him cutting the shape of the knife with the wire and the metal is now dull and crumbly. Then it cuts yet again to what looks to be a stamped aluminum knife(or at least another metal that doesn't look like the other 2). Then when he's sanding it looks like a lead alloy. A bismuth knife is absolutely possible to make and he probably did make it. And I do understand as you process metal it looks different through the stages but I can't help but feel there is some type of RU-vid magic going on here
