I love Mark Wahlberg, but
at the rate he's swinging, it would take him three f---ing days to draw that steel out. Hi, my name is Neil Kamimura. I'm a bladesmith-blacksmith from Hawaii. My business name is T Kamimura Blacksmith. It was established in 1932,
Hilo, from my great-grandfather. Today, we're going to be looking at some blacksmithing scenes
and some forging scenes of some movies, and we're
going to see how real they are. Robert Downey Jr. has
the best hammer swing. It looked like he had practiced. He was standing close to the anvil, and he's basically
cold-forging mild steel. So, cold forging is not using heat to make it pliable like clay; he's actually just hitting steel cold. I don't quite understand, for one, why he has the
forge lit in the back, since he's cold-forging it. I don't know what he was doing, 'cause the steel had no color to it. He was probably forging it at low heat, just getting it to work. But he's cooling it off
because it looks cool. They love the steam. It looks like he's holding a cup of tea because the crucible isn't hot. I personally don't think it
would create a perfect ring. It would have to be a wax mold that you cast from both sides with sand. It wouldn't just be
pouring some hot tea on it and then it makes a perfect, polished, electronic-ready ring. I would give this a 7, only because I like "Iron Man." Rambo: You know what you are; what you're made of. Oh, boy. This is the one that I absolutely hate the most. And it's not because I don't
like "Rambo." I love "Rambo." But the problem is that,
for one, that's a real shop. That's a shop that
somebody's worked out of, so there was somebody in that vicinity that knows what they're doing. Two, Sylvester Stallone sells a "Rambo" knife every release, and he has knife-maker friends. I'm friends with Jason Momoa; I would never let him do
a forging scene like this in a million years. And he's using a ball-peen hammer, like, out of a mechanic's chest. A ball-peen hammer is a
pound, or maybe 12 ounces. My hammer's 4 pounds. And I'm pretty sure he
likes to lift weights, so I don't know why he
wouldn't use a real hammer. Rambo: What you're made of. See, right there, he just
keeps hitting it on the end. All he's doing is putting
square hardy holes, markings in the bottom of that thing. So, here's your anvil, right? You have the horn. So sexy, right? You got this horn, you got this nice curve
on the back, right? And then you have the
center mass in the middle. Then there is a 1-inch square hardy hole, and that is meant for
putting tools in there. You have to remember
that the steel is hot, and you're just banging on a square hole, you'll flip it over and you just have square-hole marks all over it. I don't know why they don't tell him, "Hey, buddy, hit on the
center of the anvil. Why do you keep hitting it over the hole? Rambo: When you're pushed. When you take steel at that temperature and you quench it in
water, it microfractures. 5,160 should be quenched in oil. But it doesn't need to be quenched, because he's obviously not done forging it and didn't make anything but a pancake on the end of a leaf spring. Two, it's some magical water, because he quenches it in
water and he lifts it up and it's still hot, which, that is also not realistic. You put it in water, it would
lose its heat immediately. Maybe he just sucks at forging so bad that it was so thick that
he didn't do anything to it, so it still held its heat. I hold this to a higher accountability, as every "Rambo" movie, he's forging. How many "Rambo"s is there? Like, five f---ing "Rambo"s? How has no one been like, "Hey,
buddy, you absolutely suck. You should not do those scenes anymore"? Or, "Go take one lesson to do it." I give it a 1. F--- "Rambo." Like, I love the movie, I just don't like the forging scenes. So, the fact that he
could take the handle off with two taps of a hammer, it definitely wouldn't
have survived battle, as you are hitting edge to edge. But at least they took the
handle off on this one. Some of them are pinned, and
a lot of them are through, and then the pommel is what holds it on. But you definitely can't just take it and be like and then it comes off. You know what I mean? So, when you're melting steel in an open-faced crucible
like that they were doing, one, there wouldn't be
just, like, orangey flames. It would be the most
insane, looking at the sun. That's one. Two, the
actual crucible itself would need to be hot. That is just black, so it didn't heat up, but yet somehow, the sword is
melting on a black surface, which is the most ridiculous thing ever. Swords that were poured and casted like that were bronze. They weren't steel. It takes about 3,000 degrees to melt steel, that kind of steel. Bronze is a lower melting temperature, and so that was a lot
easier to melt and cast, but when they do cast it,
it wasn't in an open face. On both sides was it casted,
so that you pour it in the top and it fills up and makes a perfect mold. The sword would look like
a cookie on a baking sheet, so that's just bulls---. I don't quite understand how they got one sword and melted it, and you've somehow made
enough to make two swords now. You actually lose mass as you melt steel like that. I would definitely give that a 4. The thing that I did like about this scene is that they had it actually
in a cast, in a mold, and he was breaking the mold out of it. There's many different techniques. You can cast an ax because it's generally not made out
of very great steel, 'cause it needs to take a lot of abuse, versus, like, a chef knife
has to be the highest quality of carbon steel because it
needs to be razor sharp. Axes are brute force
that needs to be tough versus razor sharp. I've never seen a steel butt forge weld like that in one hit,
and it wasn't hot enough. And if you ever put wood
next to something that hot, it would disintegrate. You don't hold it to such
a high accountability, because it's not real. A tree dude is giving
his arm for a handle. I mean, you can't take it too seriously. I don't understand why he
didn't just cast it in one, but there's no way you could
forge-weld something like that. 6. I don't know. For all his big muscles,
and I love Mark Wahlberg, but at the rate he's swinging, it would take him three f---ing days to draw that steel out without any breaks. Like, literally, it
would take him three days at that hammer swing. It's the weakest swing I've -- I mean, it's pretty bad. He loves the hole too. You see
him hitting it on the hole? They all love that hole. Nobody wears a glove on
their hammer hand, ever, because it's dangerous to
hold a hammer in that hand with a glove, because it will
just fly out of your hand. But if you are going to wear
gloves in a blacksmith shop, they need to be a glove that you can shake like
this and they fly off, because once that leather gets so hot, it will cook your hand
internally within seconds. You see people freak out, and
they can't get the glove off. It will cook your hand like an oven. Evan: Are there things
you just know how to do? Right there. You see, generally, you don't quench "finished" forged blades that look like a road
going up to a mountain. That thing curvy as, crooked as can be. Once it quenches like that, it's done. You'll have to slowly take the work -- nobody ever would quench a crooked blade. Two, he's only heating the tip. So, basically, he's heating this much right here, so only this part of
the blade would be hot. This would all be soft,
and it would catch a bend, it would catch a warp. Traditionally, in Japanese weapons, the blade is straight as forged. There's a clay on the
back to prevent the spine from getting hard, so it
protects it from the heat, and then only the edge is exposed. The edge is getting hard, and that's what creates
the natural curvature of a samurai sword. So you do not go in f---ing
all bent and crooked, for one, and two, you don't forge the bend in. It's actually quenched, and through the heat-treating
process does the blade bend. This is the best part of all time, where he cuts a steel pipe. [laughs] Swords do not cut pipe. People think that samurai swords are the baddest things on the planet, and they are, for their time. But that doesn't necessarily
mean that it was the toughest and that it can cut through
cement and cut through -- no, they were actually,
some of them had a lot of mild steel in them. A lot
of them caught bends, broke. And this movie is about him
doing it traditional, right? That's not how traditional
Japanese bladesmiths test a finished product. And they are a culture
so based out of respect, you're not supposed to even
touch the steel with your hand. They would not take it and
hit a f---ing pipe with it. It would be the ultimate
disrespect for them. I'll give him a 2. If you look at the first initial scene, there's one, two, three, four, five, six pieces of broken sword, and then when they go
to put it back together, it's only two pieces. So, flux is, it's like borax. So basically, as it heats,
it's almost like melted glass that cleans it so that it
allows it to stick together. As you're forging
something on a flat surface and you're hitting it with a hammer, it would never maintain that fuller. And the fuller is that curved spot down the middle of the
blade. It's on both sides, so as you hit it, it
would just flatten it out. The correct way to fix
a broken blade like this would be to take the
handle and the guard off, cut it up into smaller
pieces, add more material, and forge-weld it again
and forge a new blade You can just tell by their swing that they've never touched
a hammer in their life. And it's not nearly hot enough to just butt-weld a forged blade together. To forge-weld, it's at
2,300. It's a brighter color. It's not orangey, it's white. 6, because they were actually forcing air into a coal forge. They were putting flux on
there to try and forge-weld it. So another, once again,
another open-face mold. And then he forges it. I have no idea what he's doing or what kind of oil they put
on there to make it do that. They're putting either
grease or wax or oil, and they're putting it on the hammer so it creates this whole fire, but they don't care about whether or not the steel was actually hot enough or where he's hitting it on the anvil. Look at this! Just the tip is hot, look. And then we're going to
quench this sword into snow. Oh, Lord. So, what happens is, when
you take a sword like this and you quench it into oil, the reason why they move it up and down as they're quenching it is because what it does is it's so hot, it creates a vapor jacket
that comes around it, and so it's boiling all
around it, so it's vapor, so you're not actually rapid-cooling it unless you're introducing
it into new oil, right? So quenching it into snow, it would just instantly melt around it and then not touch it at all. I still sharpen knives on a stone, too. Maybe not a stone like that, but, I mean, they
probably just picked it up and was like, [laughs]
you know, I don't know. I would rate that a 5 just
because it was from the '80s and they didn't know any better. As she's hitting the anvil, she's like, tap-tap, then hits the anvil. Like, you're not even
swinging it that hard. You don't need to pump your brakes. It's the most ridiculous thing ever. If you ever see a video of me forging, I'm swinging a 3- to 5-pound hammer, and, yes, sometimes when I move the blade, I have to keep my hand
continuing to swing. I don't understand how
she's engraving with a nail. It's, like, a log-cabin nail. So, this right here is my forging stamp. It's done hot, and it's pressed in. I just hit it with a hammer. Yeah, I give it a 4. It wasn't hot enough at all to forge-weld, and that's basically what
they're trying to replicate. As you're forging it
and you keep folding it, it takes out the impurities. They're trying to hit it, and they can't even keep it on the anvil. But how they turn that little puck into a half-inch-thick plate
with perfect square edges when they swing a hammer
like that is beyond me. And so why make a plate that's
bigger than the anvil, right? You can't forge-weld it. Look at it. It's just rocking on its own. You only want to open
it so much to fold it, because how would you
create enough even pressure to forge-weld that together? You would hit it here, and
then it would forge-weld here and then break loose here. You would hit it here. You want constant pressure of reduction. I would rate this a 3. I don't have a favorite of any of them. I don't think movies in itself have ever captured it. It's just annoying because it affects me. They're like, "All you
do is pour the knife. It's not that hard." And I'm like, "B---, I swing
a hammer for a living." I sacrifice my body to swing a hammer. They think I just pour
it in a mold, you know? So, hopefully now, this
gets enough exposure where they might actually do a good one. And if you enjoy this video, you should click right
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