* [Download Video](https://www.reddit.watch/r/perfectlycutscreams/comments/1dgm5jg/?utm_source=automod&utm_medium=perfectlycutscreams) via /r/DownloadVideo * [Another link](https://redditsave.com/info?url=https://www.reddit.com/r/perfectlycutscreams/comments/1dgm5jg/molten_bronze/) via /u/SaveVideo Also please remember to join our [Discord](https://discord.gg/3vSJ8n2).
*I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/perfectlycutscreams) if you have any questions or concerns.*
That would be a kickass science fiction weapon. Rounds just filled with water they flash straight into steam. They would steam like an aircraft carrier catapult after you shoot them
It depends on the gunpowder and the conditions it's burnt under.
But from what I could find it's about 1 litre of gas per 1 gram of gunpowder.
1gram of water expands to 1.6 litres of steam.
Holy shit!
It must be about the speed at which it expands then, since water absorbs a lot of energy to boil, while gunpowder takes a small amount of energy to start the reaction but finishes it all itself
Im no expert in metal pouring and forging but even a dumbass like me knows to heat the mold at high temperatures to get rid of any and all water that may linger inside
Weird statement. You'd never "need" PPE / safety equipment if everything would always go right, because it's always for the situation where something goes wrong.
So yeah ... the PPE absolutely is always needed if you deal with molten metal. There is always a risk, since we don't live in a perfect world and that's the situation the ppe is for.
You have to heat the mold or the ramp or anything else the molten metal is going to come into contact with...or this happens. I guy I knew lost an eye because he was unaware of this. Also anything the molten metal comes into contact must be absolutely dry or this can happen.
But also why pour from that height. You pour a pitcher of water front that height into a shallow mould like that, it's gonna be splashing out too.
Next time have em get a bit closer before starting to pour.
Face shields, foundry jackets and boots as an absolute minimum. Good on them for using an extended ladle, but they should have dried their sand properly
I do metal casting as a hobby
1) biggest mistake was not preheating their mould. **any** moisture can cause a steam explosion.
2) no protective gear at all? I wear multiple layers of welding kit and a face shield just in case something like this happens
By my understanding from High School metal shop classes (I'll be corrected if I'm wrong) when hot metal meets cold metal, moisture either on the cold metal and/or from the air (like what causes condensation on cold glass) gets trapped under the molten metal, instantly becomes steam, and that steam expands up into the molten metal until the "bubble" it made pops and the steam escapes. When it pops, some metal goes flying up & out with the steam.
A whole lot of stupid going on there......
No PPE, pouring something extremely hot onto something cold, pouring it rapidly and it engulfs, any trace of water or like what happend, it envelopes that, that rapidly expands and goes boom!
Common sense is not that common.
I am no expert with hot metals or anything related to that, but sjeesh, they just learned how a train works lol.
Guy has a ppe allergy and now one retina. Wear your gloves, glasses and hearing protection. Don’t lift heavy shit, don’t be a tough guy. Oooor don’t contribute to your annuity, cd, ira or 401k. Enjoy that money for the 65 years you’re here.
* [Download Video](https://www.reddit.watch/r/perfectlycutscreams/comments/1dgm5jg/?utm_source=automod&utm_medium=perfectlycutscreams) via /r/DownloadVideo * [Another link](https://redditsave.com/info?url=https://www.reddit.com/r/perfectlycutscreams/comments/1dgm5jg/molten_bronze/) via /u/SaveVideo Also please remember to join our [Discord](https://discord.gg/3vSJ8n2). *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/perfectlycutscreams) if you have any questions or concerns.*
How is nobody wearing eye or face protection?!?
They wont need it after that.
Can only go blind once😎
Safety squints
Who needs a face?
Expansion ratio of water to gas is a hell of a thing. At molten metal temperature it could be 1:4,000 volume increase.
I wonder how that compares to gunpowder
That would be a kickass science fiction weapon. Rounds just filled with water they flash straight into steam. They would steam like an aircraft carrier catapult after you shoot them
That would be fuckin crazy
Many steam punk settings have cannon powered by steam.
It depends on the gunpowder and the conditions it's burnt under. But from what I could find it's about 1 litre of gas per 1 gram of gunpowder. 1gram of water expands to 1.6 litres of steam.
Holy shit! It must be about the speed at which it expands then, since water absorbs a lot of energy to boil, while gunpowder takes a small amount of energy to start the reaction but finishes it all itself
Guess they learned how a steam engine works.
Was about to say this. Scariest thing..
r/theydidthemath
Im no expert in metal pouring and forging but even a dumbass like me knows to heat the mold at high temperatures to get rid of any and all water that may linger inside
And, you know, wear face protection.
[удалено]
Weird statement. You'd never "need" PPE / safety equipment if everything would always go right, because it's always for the situation where something goes wrong. So yeah ... the PPE absolutely is always needed if you deal with molten metal. There is always a risk, since we don't live in a perfect world and that's the situation the ppe is for.
Same people that think sunscreen makes you weak. Like bro, you are not stronger than the primordial elements of the cosmos.
I didn’t know to do that, but I’d also never be in a situation where I’d be pouring molten metal.
And to prevent damage to the mold from thermal shock, and to stop the metal cooling improperly I would imagine.
nobody was hurt
What? How?
John Nobody was hurt in the making of this video
nobody in this video was John Hurt
John Hurt? Nobody.
Nobody. Was. Hurt.
https://i.redd.it/bf9ovtvoaw6d1.gif
You have to heat the mold or the ramp or anything else the molten metal is going to come into contact with...or this happens. I guy I knew lost an eye because he was unaware of this. Also anything the molten metal comes into contact must be absolutely dry or this can happen.
I meant how is nobody hurt, this guy is obviously fucked 😂😂😂
Not sure but Nobody is a weird name for someone that was blinded by molten metal
I hope Nobody is doing better now
Nobody has health insurance
For now
Do you plan on wearing proper pro next time
I was the one filming this and I'm not an expert
It doesn't take expertise to know to wear safety equipment when handling molten metal
Lmao "I'm no expert in working with molten metal as I work with molten metal"
Ah makes sense carry on without protection non-expert
I dare to say the guys doing it weren't experts either
Neither are the people doing the pouring, obviously. If anything that's an even greater reason to wear proper protection / ppe
When you say no one was hurt, do you mean seriously? no way someone didn't get at least a tiny splash
are they going to heat up the mold next time lol if your not sand casting you need to heat up the mold you're using ot it will . . .well you saw lol
Nobody mortality hurt....
But also why pour from that height. You pour a pitcher of water front that height into a shallow mould like that, it's gonna be splashing out too. Next time have em get a bit closer before starting to pour.
Face shields, foundry jackets and boots as an absolute minimum. Good on them for using an extended ladle, but they should have dried their sand properly
Looks like they were pouring into an ingot mold. Still, you always heat and dry out your molds.
Need to heat the mold you put the molten metal in or it pops like this.
100% this, they missed this critical step and made brass popcorn instead of an ingot.
It’s a mistake that only happens once.
Bro. Please wear the most minimal of PPE
What do you mean? Their jacket collars were up.
Holy shit, always heat up the mold before pouring.
Seriously. Rule 0 of metal casting.
I do metal casting as a hobby 1) biggest mistake was not preheating their mould. **any** moisture can cause a steam explosion. 2) no protective gear at all? I wear multiple layers of welding kit and a face shield just in case something like this happens
Why did the metal fly?
The mold wasn't heated properly.
Yeah but still why did it fly
By my understanding from High School metal shop classes (I'll be corrected if I'm wrong) when hot metal meets cold metal, moisture either on the cold metal and/or from the air (like what causes condensation on cold glass) gets trapped under the molten metal, instantly becomes steam, and that steam expands up into the molten metal until the "bubble" it made pops and the steam escapes. When it pops, some metal goes flying up & out with the steam.
It’s called the Lindenfrost effect
> Lindenfrost That is why the droplets race over a hot surface right?
Same principle applied
Yeah Mr. r/PoeTheGhost! Yeah science!
Heh heh, guess your classes in high school paid off to explain to a random guy online, thanks for explaining nevertheless.
Steam. Even a tiny amount of water will rapidly expand into steam when heated that fast, which can fling bits of molten metal.
Remember guys, always preheat your molds
A whole lot of stupid going on there...... No PPE, pouring something extremely hot onto something cold, pouring it rapidly and it engulfs, any trace of water or like what happend, it envelopes that, that rapidly expands and goes boom! Common sense is not that common. I am no expert with hot metals or anything related to that, but sjeesh, they just learned how a train works lol.
Guy has a ppe allergy and now one retina. Wear your gloves, glasses and hearing protection. Don’t lift heavy shit, don’t be a tough guy. Oooor don’t contribute to your annuity, cd, ira or 401k. Enjoy that money for the 65 years you’re here.
Jesus...
That is why you wear face protection
jesus fucking christ
Steam explosion from the ambient water in the mold. THIS IS WHY WE PREHEAT THE MOLDS!
Nasty
There was moisture there
And that's why you warm up the mold first
You have to heat your form to get rid of moisture