1200°C Molten Copper in Slow Motion – The Slow Mo Guys

1200°C Molten Copper in Slow Motion – The Slow Mo Guys

Hello, there I’m Gav I’m Dan We’re the Slow Mo Guys …without our lab coats Yeah, we’ve actually got these very fashionable sort of space-suit-things Little bit of Babylon Zoo They are! I feel like I should be playing like a robot the whole time like Yeah Where, uh, where are we right now? We’re at the Metal Casting Research Lab at Purdue University And we’re going to be doing some molten metal pouring on to this plate I’ll stop you there Not just any metal, right, you can- I’ve seen, you know, videos of melted aluminium being poured but that melts at 600°C, but we’re doing- CHILD’S PLAY -Nothing, isn’t it? Nothing You can do that in the back garden This is copper, which melts at over 1085° and we’re going to be pouring it at 1200°C, over 2000° Fahrenheit I’m thinking for this one, resolution is going to make this a lot nicer than speed so we’ll film it at 1000 frames a second, but in 4K uh, first we’ll get a light on it, and I think after that, we’ll just let it- we’ll expose to its own glow so, it’ll just be kinda surreal molten droplets splashing in 4K I think it’s gonna be class I think it’ll be class, too Yeah Well, now that we’re agreed on the fact that it’ll be class let’s move on Havin’ a bit of an issue, here What’s up? Basically, I’m, uh, pretty scared Yeah obviously 1200° hot, molten copper and, uh Heh I’ve got these to pour it with, and I’m like Heeeh meeeheh Trying to practice with it and by the time I’ve, like, got the grip, right? I’m like “ok, yeah, I’m ready” it’s already solidified You’re going to be pouring it in like *shakes camera* Yeah, hah oooooahaaa it’s heavy, cuz’ it’s a thing full of metal and I’ve gotta grab it with this and pour it you know Yeah It’s not easy, cuz’ it’s 1200° in a minute, but then as soon as it goes below, sort of what is it? 1085 Then it, uh it solidifies. So we got very few- very small amount time to be able to pour it You always forget that about metal, it’s that, when it’s liquid, it’s still metal Yeah., it’s still heavy Alright, here we go You wanna be up higher than this, right? OK Ready? Cool Got it? Yup Step back Did you get hit? You alright? Awesome You get it? Yeah *Sighs* You got my hand Really? Yeah Nooo You alright? Yup You can’t really push the button with these things *ambient slow motion noise* *speed up sound* *ambient slow motion noise* How did that go? It went well I didn’t chicken out It was a good aim, you went really high, and it landed straight on the, kinda, pan Was quite happy with that it’s quite, like, distracting and a lot of pressure when you’ve got m-molten copper at 1200° in your hand and you’re like, trying to aim it Right, let’s show off the little splat that we’ve got So that went nice I think what we’ll do now, for a bit of variation, is, repeat the experiment, we’ll turn off the lights, though and I’m gonna go wide open on this lens so hopefully, it’ll- it’ll just be illuminated by its red-hotness. Woo ahaha You alright? Yeah hah It’s gone everywhere *ambient slow motion noise* You did well to get it in focus, actually
*ambient slow motion noise* th-the focus that I gave you is about an inch
*ambient slow motion noise* and, you s- you’re nailing it
*ambient slow motion noise* That quality…
*ambient slow motion noise* I love that
*ambient slow motion noise* This is one of those things, I could just watch this all day
*ambient slow motion noise* this could be a screensaver for me
*ambient slow motion noise* That looked deluxe It looked like melted metal rain perfect balls of glowing hot metal falling and then just splashing. And it’s- it’s the exact same as water where it just turns into individual droplets by the time it hits so you get loads of lovely splashes. Yeah Very surreal looking Rain doesn’t glow- Haha yeah -spreads everywhere and burns people in an instant. You got me! You got me in the hand I was actually aiming for you, I was like “That wasn’t high enough last time” Yeah keep going keep going Thankfully, we didn’t crack a lens, and uh, just some skin got burnt on mine. Once again, the glowing hot metal where I get burnt and you don’t, I don’t know how that keeps happening HOH AH FU- AH AH HAHA *Bleeeeeep* Yeah, I was standing next to it, pouring it but to be fair, when I was watching, cuz’ you were watching the camera, I was pouring it here, and it spread, you know, a good couple of meters, everywhere, like liquid metal pouring all over the place you could probably find balls of it all over the floor Well, hopefully you enjoyed that video please let us know if you like these science lab experiments, cuz’ we can do more. Uhm, feel free to follow us on Twitter, buy some merch and if anyone knows how to power down Dan, please let me know… he’s out of control He’s- We got a second channel, too You done? You finished? Yeahah


  1. The Copper actually cools so fast you can see it solidifying even in slow motion. Keep your eye on undisturbed puddles after they land. – Gav

  2. I watched a video the other day of a piece of steel plant machinery exploding. The molten steel shot out like one of those black snakes fireworks you see during festivities. It is a purely fascinating video, and I would love to see something similar in slow mo.

  3. it's looks like orange juice, or fanta, that got really angry, and then cooled down a bit and looked all pretty and coppery
    – my real train of thought right there, lost for a description of the second though… neon fanta in a good mood? a really HAPPY mood, you know sometimes my brain is a fun place to be x-D

  4. Could you try to slowmo a thin sheet of metal bouncing because of an explosion but attracted back because of magnets ? Explosion going through and non through ?

  5. Ребят! А почему описание роликов на Русском? Причём некоторые на Русском некоторые на Английском.
    Канал мне нравиться)))

  6. I was typing my comment about having the lights out copper splash as a screensaver on a 4k tv when Gavin said "I want that as a screensaver" :'D

  7. why don't you slow down some chemistry experiments like thermite reaction, some explosive reactions or color changing reactions etc.

  8. I was thinking about pouring below freezing ethanol into water in slo mo, or frozen CO2. Maybe a magnesium in water explosion, or an acid/base reaction in slo mo could be interesting.

  9. Right before he said "I could have this as a screen saver", I thought I would pay for this file in 4k to use as a screen saver or background. It's an awesome shot.

  10. I love how you guys say the name of Purdue University! You've been there twice now that I know of and both of you have said the name the same way which is different than how we say it in the USA. I just love watching you guys! I also love how you seem to care so much for each other off and you are asking are you okay… are you okay… I think it's great and you guys do such interesting "experiments".

  11. I went to uni at Falmouth in Cornwall, where there's a working dockyard. I once went to the viewpoint above the docks at night when they were welding, and they were working on the edge of the bow, and the drips of metal fell many metres and hit the dry dock floor in a way that was like reverse fireworks, with these huge slashes of molten metal spraying outwards and cooling. It was a memory I'll never forget. Would you be able to contact a dockyard or something somewhere and see if you can film this? Part of the majesty was this huge bow of the ship, these tiny drips and the astonishing splash so far down below. Best done at night, or dusk, with both a wide and narrow angle I think.

  12. Slow mo guys really need to make a bunch of downloaded gifs/screensavers from a bunch of their most satisfying slow mo shots

  13. Salut, j'aime vraiment bien vos vidéos qui associent de très belles images à l'humour que pimente une certaine prise de risque. Prenez cependant garde à la dose de piment : j'ai parfois l'impression qu'elle n'est pas vraiment contrôlée…

  14. Does anyone of you know what song they are using when we see the slow motion? I really like those ambient tunes. It’s very relaxing.

  15. The phenomena that causes the flow to break up into little spheres is called Rayleigh Instability. The surface tension causes it to want to minimize its surface area. It's pretty cool and looks amazing in molten copper!

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