Why aren't we making knives out of obsidian by now? >500 times sharper than steel

Why aren't we making knives out of obsidian by now?
>500 times sharper than steel
>2000 times finer edge than steel (3 nm vs. 0.4 mm)
>so fine it cuts between cells (unlike steel, which tears apart cells) creating wounds that leave no scars when they heal

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  1. 1 year ago
    Anonymous
    • 1 year ago
      Anonymous
  2. 1 year ago
    Anonymous

    brittle

    • 1 year ago
      Anonymous

      Shits brittle.

      This. Might make sense for surgical use with scalpels though. Though then again that would be one time use and it might be more expensive to produce.

      • 1 year ago
        Anonymous

        >Might make sense for surgical use with scalpels though.
        it's so brittle that it can't handle being sterilized. that amazing edge crumbles because it heats up (and expands) much faster than the thicker areas behind it.

        • 1 year ago
          Anonymous

          Just sterilize it with x-rays and alcohol

      • 1 year ago
        Anonymous

        >Though then again that would be one time use
        scalpels are already one time use instruments.
        Some surgeons do use obsidian scalpels to minimize scarring or for extremely delicate tissue though. They're just significantly more expensive, and a much higher risk since if you break off a chunk of obsidian in a patient, that would be fricking bad.

        • 1 year ago
          Anonymous

          >surgeon smashes a beer bottle over the anesthesiologist's head
          >picks up one of the larger shards
          >starts cutting into the patient

          • 1 year ago
            Anonymous

            >damnit Kevorkian, you're a loose cannon!

          • 1 year ago
            Anonymous

            Anesthesia deserved it giving him those shifty eyes over the sheet.

            • 1 year ago
              Anonymous

              I give you whatever eyes I goddam want you blood stained ape
              t.anesthesiologist

              • 1 year ago
                Anonymous

                Just out of curiosity, how scared are you of fricking up the mix and having somebody be paralyzed but not unconscious or anesthetized during a procedure? I had a time where I was getting my guts worked on and that scared the shit out of me.

          • 1 year ago
            Anonymous

            Why not smash it over the patients head so you don't have to hire anesthesiologist

  3. 1 year ago
    Anonymous

    Shits brittle.

  4. 1 year ago
    Anonymous

    Not durable enough for field use, EDC etc.

  5. 1 year ago
    Anonymous

    want to know how I can tell you know nothing about metallurgy or material science?

    • 1 year ago
      Anonymous

      >want to know how I can tell you know nothing about metallurgy or material science?

      • 1 year ago
        Anonymous

        I hear breathing is a israeli science trick. Try to stop breathing. You’ll be saving the white race, brother!

        • 1 year ago
          Anonymous

          >anyone implying they are slightly intelligent or educated is a direct attack on my psyche and must be bullied immediately

          sphere of influence?
          [...]
          >science is basedjak
          consider stepping out of your echo chamber

          >/k/ finds out poltards are aggressively anti intellectual

          • 1 year ago
            Anonymous

            sphere of influence?
            [...]
            >science is basedjak
            consider stepping out of your echo chamber

            I'm aware, I just wish they'd frick off leave

          • 1 year ago
            Anonymous

            it's like they fell for every single psyop designed to make them weak and stupid

            • 1 year ago
              Anonymous

              >implying they weren't already...

          • 1 year ago
            Anonymous

            [...]
            I'm aware, I just wish they'd frick off leave

            it's like they fell for every single psyop designed to make them weak and stupid

            >implying they weren't already...

            samegay harder troony

            • 1 year ago
              Anonymous

              at any rate I'm definitely not samegayging, can't speak for the other 3

            • 1 year ago
              Anonymous

              Frick off /misc/tard. Nobody thinks about trannies as much as you. You have a serious sexual problem which you can relieve by injesting a .500 bushwacker pill with your supper

            • 1 year ago
              Anonymous

              like pottery

          • 1 year ago
            Anonymous

            Why wouldn't it be? It's full of third worlders.

          • 1 year ago
            Anonymous

            They're not anti intellectual, they're just really fricking stupid.

      • 1 year ago
        Anonymous

        >anyone implying they are slightly intelligent or educated is a direct attack on my psyche and must be bullied immediately

        • 1 year ago
          Anonymous

          >this redditbrain actually thinks he is "slightly intelligent or educated"

          • 1 year ago
            Anonymous

            learn how to greentext newbie

            • 1 year ago
              Anonymous

              post your reddit account troon

      • 1 year ago
        Anonymous

        >One of the most apolitical, hard, manly sciences in the world is SOI because I SAY SO

        • 1 year ago
          Anonymous

          i bet you like "hard and manly" things up your pozzhole you degenerate sodomite

        • 1 year ago
          Anonymous

          sphere of influence?

          https://i.imgur.com/hOPChEb.jpg

          >want to know how I can tell you know nothing about metallurgy or material science?

          >science is basedjak
          consider stepping out of your echo chamber

      • 1 year ago
        Anonymous

        >science
        >arguably the whitest thing to ever exist
        >/misc/ hates it
        Really males my synapses spark.

      • 1 year ago
        Anonymous
      • 1 year ago
        Anonymous

        So this is where we're at now huh?
        Just blatantly hating all science and knowledge just because morons use the word like a god?

      • 1 year ago
        Anonymous

        This was a funny reaction to a smarmy gay post and the pussies thinking otherwise and taking it personally can go frick themselves.
        You do you, anon.
        >muh science
        Stop being homosexuals about knowledge, it's not inherently gay, but some people make everything they touch gay.

  6. 1 year ago
    Anonymous

    It's brittle, not elastic and I'm pretty sure you can't sharpen it as easily as steel. Mass produce too. Might be good for scalpels or razors but sure as hell not knives.

  7. 1 year ago
    Anonymous

    We did for like 100,000 years.

  8. 1 year ago
    Anonymous

    >average /k/ommando morning
    >wake up
    >piss
    >brush teeth
    >think up three ideas with brainpower of Stone Age forager

  9. 1 year ago
    Anonymous

    Are you the same moron who made that double barreled grenade launcher thread? Please tell me there's not more than one of you, what are your wranglers even getting paid for you horrid little mouthbreather?

  10. 1 year ago
    Anonymous

    They still use obsidian scalpels in plastic surgery, specifically for the last reasons. They're not suited for any combat use because they break/chip too easily.

    • 1 year ago
      Anonymous

      >They're not suited for any combat use because they break/chip too easily
      Iberian hands typed this.

      • 1 year ago
        Anonymous

        >middle guy has a pokeball emblem on helmet

        • 1 year ago
          Anonymous

          It's an actual pokeball in case he comes across a jaguar.

      • 1 year ago
        Anonymous

        Si, we proved that steel is better than obsidian when we conquered the new world

  11. 1 year ago
    Anonymous

    Its brittleness makes it useless as anything more than a one-time use scalpel.

  12. 1 year ago
    Anonymous

    doctors use diamond knives, which is superior (though more expensive) than an obsidian blade

    • 1 year ago
      Anonymous

      Nothing is "superior" to an Obsidian blade, tard. It's literally the sharpest blade material known to man.

      • 1 year ago
        Anonymous

        it's less brittle unlike you b***h

    • 1 year ago
      Anonymous

      literal stone age technology

    • 1 year ago
      Anonymous

      superior how?

      • 1 year ago
        Anonymous

        It doesn't leave pieces of itself inside you for once.

      • 1 year ago
        Anonymous

        diamond is the strongest metal

    • 1 year ago
      Anonymous

      Diamond blades are much tougher than glass blades, but they are not sharper.
      They still use glass blades in microtomes, which prepare ultra thin electron microscope samples

    • 1 year ago
      Anonymous

      True, diamond is the hardest metal known to man after all.

      • 1 year ago
        Anonymous

        >diamond
        >metal
        he knows too much

      • 1 year ago
        Anonymous

        technically, yes

  13. 1 year ago
    Anonymous

    they had scalpels made out of the stuff, then ss became better, and sharper.

  14. 1 year ago
    Anonymous

    The do for surgical scalpels. Outside of that there's little too no use for that that can't be done well enough by steel.

  15. 1 year ago
    Anonymous

    For some context, an obsidian surgical scalpel can run about $120 each on average. Lowest I could find was $80. Considering that nearly-as-sharp stainless could get you hundreds of blades for that same price point, it's pretty obvious why, considering that there are zero combat-related reasons why you'd need a blade that tiny bit sharper than stainless.

    The BIG thing coming are vibroblades in an end-user (read: out of the laboratory) capacity. The motto for them should pretty much be "Kevlar? Never heard of it." Doesn't do much against solid armor, of course, but when you considering the people that would be using a blade like that, it suits its purpose.

    • 1 year ago
      Anonymous

      >nearly as sharp
      Lmao

      • 1 year ago
        Anonymous

        Go ahead and tell me the combat application that could only be done by obsidian and not by steel?

        • 1 year ago
          Anonymous

          I'm not talking about combat applications, saying steel is nearly as sharp as obsidian is just straight up wrong

          • 1 year ago
            Anonymous

            I AM talking about combat applications. You can take the technical semantics to PrepHole.

  16. 1 year ago
    Anonymous

    >Why not make knife out rock, steel hard make, me use rock, rock sharper! ME SMART!

    >t. gay ass OP

  17. 1 year ago
    Anonymous

    [...]

    posting anywhere other than /misc/ will slowly turn you into a troony, you'd better go back there before it's too late

  18. 1 year ago
    Anonymous

    Because obsidian has almost no toughness. Because it's a glass.

  19. 1 year ago
    Anonymous

    [...]

    That is my favorite topic when discussing you “people”. My second favorite is murder.

  20. 1 year ago
    Anonymous

    I try to watch YouTube vids of steel smiths making knives…but too many homos and/or autistics. I mean why do you have to be a homosexual Aspbergers victim to have a channel with views?

    • 1 year ago
      Anonymous

      If you're able to focus on other things, it typically means you can't put the kind of effort you need to in order to make engaging content. I never could, thanks to having to work for a living in a job that's mentally taxing to the point where I just want to watch something funny when I get home rather than imagining what my 'next episode' will be like.

  21. 1 year ago
    Anonymous

    They do sell them commercially but they're limited to scalpels and meme chef knives.

  22. 1 year ago
    Anonymous

    This is bait, right anon? There’s no way you put this much research into obsidian without realizing that you can break it if you smack it hard enough.

  23. 1 year ago
    Anonymous

    This triggers the Spaniard.

    • 1 year ago
      Anonymous

      Having seen the local weapons in action, the Spaniards... decided to keep using their own steel blades. And it wasn't that they saw anything wrong in using locally made gear, they happily strapped on local armor and ate the local food.
      The Aztecs in return saw what Spanish steel could do, and made use of whatever swords they managed to capture.

    • 1 year ago
      Anonymous

      These literally shattered repeatedly on the Spanish metal armor. The lack of Aztec metal weapons was a primary factor in their defeat by Cortez.

  24. 1 year ago
    Anonymous

    >500 times sharper than steel
    Sure, that sounds all impressive and shit... until you remember that we don't know anything about how they measured and calculated that and as such it doesn't doesn't tell us anything what so fricking ever. It rather has a high probability of just having been pulled right out of someone's arse.
    Now what we can tell is that, yes, under a microscope you can get a ridiculously fine and sharp edge. But outside of small surgical scalpels, you don't get just one edge. Look at this thing, every little scallop along the edge is one fine, sharp edge. But in between them there are little "nubs", discontinuities between edges. When you cut each and every one of those will snag and add drag, making the knife overall less sharp. Adding insult to injury all the little edges we have also won't be perfectly aligned, so no matter how you hold the knife you won't have perfect edge alignment, making it harder to cut.
    Moral of the story: trying to judge a macroscopic item's usefulness purely by microscopy is fricking moronic.

    >so fine it cuts between cells (unlike steel, which tears apart cells) creating wounds that leave no scars when they heal
    More from the "sounds impressive, butt"-category. The specific inflamed anuses in this case being that first you're not a surgeon, and as such being able to make wounds that heal with less scaring is utterly useless to you. Second the mechanism you claim for it is obviously complete bullshit, since the surgeon can't see the cells to aim in between. (If you had some experience with sharp and pointy things you'd also know that blunt things can nudge stuff aside to slide past, sharp bites in.) Instead sharper blades make cleaner cuts, and cleaner cuts mean less cells were damaged, and so they heal with less scaring. Once again this is only the case with teeny tiny little scalpel blades for obsidian, since the nubs and misalignments of anything larger will instead mean you're slicing up tissue all over the place.

  25. 1 year ago
    Anonymous

    They use obsidian scalpels for eye surgery.

  26. 1 year ago
    Anonymous

    As an experienced outdoorsman, I will buy an obsidian knife when you can baton with one

  27. 1 year ago
    Anonymous

    >be me in HS
    >geology class field trip to the beach
    >teacher finds some obsidian and does a little demo where she cleaves it in half to show that it's glass inside
    >"okay class I'm gonna pass a chunk around. BE VERY CAREFUL"
    >tries to delicately hand me a chunk that's about the size of my palm
    >she accidentally drops it like 1 inch onto my hand and it feels funny
    >blood.pdf
    >I look down at my palm and see bone

    Just the little drop into my palm gave me a gash at the base of my index finger that required 5 stitches. Obsidian fricks.

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