Warm, warm, warm, cold as fuck
January 24, 2017 2:07 PM   Subscribe

Youtube has been obsessed lately with various red hot things, but this one is actually worth watching: 20 kg of red hot steel vs a frozen lake, from your favorite Finnish machine shop duo (previously.)
posted by Rhomboid (37 comments total) 25 users marked this as a favorite
 
Super neat to see the under-ice view.
posted by Phredward at 2:17 PM on January 24, 2017 [3 favorites]


Finally something "Beyond the Press" that's actually amusing.
posted by chavenet at 2:18 PM on January 24, 2017 [1 favorite]


At last, a totally practical way to melt ice dams.
posted by selfnoise at 2:19 PM on January 24, 2017 [3 favorites]


chavenet: They've had a bunch of fun videos on that channel though?
posted by flatluigi at 2:20 PM on January 24, 2017 [1 favorite]


The conclusion, shown to us multiple times from different angles in slow motion, is wonderfully satisfying.
posted by CBrachyrhynchos at 2:23 PM on January 24, 2017 [2 favorites]


I love the part where (SPOILERS) he loses his little pokey stick thing.
posted by tobascodagama at 2:27 PM on January 24, 2017 [10 favorites]


This is a really interesting multi-phase fluid dynamics problem which I have no desire to solve analytically.

At first, I thought, this is a simple matter of finding the heat capacity of a chunk of ice the same dimensions as the slug of steel and comparing it to the heat stored in the metal (you can get a good estimate of the temperature by looking at the steel's color and then using the mass to find the amount of stored energy).

But then you have to realize that the steel is not only melting the ice, it's causing the melted water to boil. So you've initially got heat conducting in to the ice, but as the slug travels it's first conducting heat to the melted water (which is then convecting to the ice) and THEN it's boiling the water. So now you have a gaseous boundary layer surrounding the steel which is convecting some of that energy in to the water further away from the steel but also simply carrying a lot of that energy away in to the atmosphere as the vapor bubbles escape. A lot of the energy store in the steel is getting lost to boiling the water.

Importantly, this is happening at bottom face of the slug where you would want lots of contact with the ice to melt it. That steel is probably riding on a cushion of water vapor as it boils away water, leading to inefficient heat transfer to the ice. I would guess that if the steel slug had some holes drilled all the way through it to vent steam it would have cut through the ice faster.
posted by backseatpilot at 2:29 PM on January 24, 2017 [30 favorites]


between this and the burnt-food post, metafilter must be directly tapped into the pleasure part of my brain today
posted by burgerrr at 2:30 PM on January 24, 2017


And here I am using an auger like a sucker.
posted by mandolin conspiracy at 3:03 PM on January 24, 2017 [4 favorites]


I love these two.
posted by Splunge at 3:08 PM on January 24, 2017 [3 favorites]


Yeah an auger is definitely more... boring
posted by oulipian at 3:08 PM on January 24, 2017 [56 favorites]


Finnish Machine Shop Duo also also previously.
posted by radwolf76 at 3:12 PM on January 24, 2017 [1 favorite]


O those wonderful Finns. I want to be a Finn Finn sometime instead of a Finn American
posted by NoMich at 3:29 PM on January 24, 2017 [2 favorites]


Am I the only one wondering what they're wearing that they don't look miserably cold?
posted by dilettante at 4:01 PM on January 24, 2017


Am I the only one wondering what they're wearing that they don't look miserably cold?

Finnish genes are much warmer than the Levi's or Wrangler versions.
posted by Greg_Ace at 4:16 PM on January 24, 2017 [14 favorites]


something something permanent press
posted by Rhomboid at 4:22 PM on January 24, 2017


That's great. I liked the underwater view.
posted by rmd1023 at 4:31 PM on January 24, 2017


#squadgoals


I want to do this so bad. Winter is long.
posted by littlewater at 4:36 PM on January 24, 2017 [1 favorite]


I would guess that if the steel slug had some holes drilled all the way through it to vent steam it would have cut through the ice faster.

This calls for further experimentation!
posted by tobascodagama at 4:38 PM on January 24, 2017 [3 favorites]


Finnish TV used to show PSAs (maybe they still do) of children walking on ice that wasn't as thick as you'd think, and falling through, and DYING HORRIBLE. So this video is kind of like American people flipping burning matches at Smokey the Bear.
posted by The corpse in the library at 4:39 PM on January 24, 2017 [13 favorites]


Am I the only one wondering what they're wearing that they don't look miserably cold?

Looks like standard thermo gear to me. I don't know where in Finland they are, but it's not that cold in the region at the moment, typically a few degrees below zero (celsius, obvs).
posted by effbot at 5:13 PM on January 24, 2017 [1 favorite]


Finnish TV used to show PSAs (maybe they still do) of children walking on ice that wasn't as thick as you'd think, and falling through, and DYING HORRIBLE.

I don't recall anyone dying, but this was definitely running through the back of my mind.
posted by haapsane at 6:35 PM on January 24, 2017 [7 favorites]


Christ, what an ice hole!
posted by Kabanos at 6:38 PM on January 24, 2017 [12 favorites]


> I don't recall anyone dying, but this was definitely running through the back of my mind

Finnish level set to 11! I might be combining it with the "don't get drunk and dive into shallow water" warnings.
posted by The corpse in the library at 6:54 PM on January 24, 2017 [2 favorites]


Yeah an auger is definitely more... boring

ಠ_ಠ
posted by Johnny Wallflower at 8:07 PM on January 24, 2017 [1 favorite]


Ok. Maybe, juuuuust maybe, we are not 100% doomed as a species.
posted by eggkeeper at 10:00 PM on January 24, 2017 [2 favorites]


Oh good, I was running out of ideas for dangerous things to carry while walking on slippery surfaces; running chainsaws, serrated knives, anvils, sweating dynamite are all not getting the adrenaline going like they used to but burns plus pulverized bone? *Shivers*
posted by BrotherCaine at 11:46 PM on January 24, 2017


I was hoping for a steam explosion.
posted by sebastienbailard at 12:26 AM on January 25, 2017 [2 favorites]


Warm. Warm. Warm. Cold as fuck.
posted by double bubble at 5:10 AM on January 25, 2017 [1 favorite]


I don't know where in Finland they are

Seems they're in Tampere, according to a recent interview (so southern Finland, but inland so I'd expect it to be a bit chillier than, say, Helsinki).

(Google's Finnish to English translation could need some improvements, but it's mostly readable in translation. If you ignore the constant "Goat Bridge" references, that is :-).
posted by effbot at 5:55 AM on January 25, 2017 [1 favorite]


And now a followup video in which the tool and cylinder are retrieved.

(And wow, the original video sure made the viral rounds, closing in on 10 million views. They gained approximately 55k subscribers from that video alone.)
posted by Rhomboid at 5:46 AM on February 1, 2017 [1 favorite]


Brilliant, his wife just cracking up at his misfortune. "It's not funny." "Yes it is."
posted by lucidium at 9:12 AM on February 1, 2017 [1 favorite]


I was really expecting him to lose the GoPro in the follow-up video. XD
posted by tobascodagama at 9:21 AM on February 1, 2017


Would you settle for a video where he catches the GoPro on fire? (Burning GoPro at around 5:12 mark, NSFW language from Lauri when Anni points it out.)
posted by radwolf76 at 10:44 AM on February 1, 2017 [2 favorites]


That is acceptable, yes.
posted by tobascodagama at 12:59 PM on February 1, 2017 [1 favorite]


NSFW language from Lauri when Anni points it out.

There are some brief bursts of NSFW language in the followup video as well, when he drops the magnet. Guess it's only a problem if you work with sensitive Finnish speakers, though.
posted by effbot at 1:47 PM on February 1, 2017


Further follow up - Thermite versus frozen lake
posted by nubs at 11:45 AM on February 15, 2017 [1 favorite]


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