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It’s gotten to the point in the last year or so where I trust hobby-printed parts in non-critical applications though I certainly wouldn’t trust anything I personally design. 
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Jun 13, 2020 04:50
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Safety Dance posted:Do any of y'all use UV-cured resin 3D printers? Are resins generally cross-compatible between printers, or do I have to stick with brand X resin if I buy a brand X printer? How's the odor? I have a resin SLA printer, the resins are pretty generic.
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Jun 13, 2020 15:23
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Safety Dance posted:Do any of y'all use UV-cured resin 3D printers? Are resins generally cross-compatible between printers, or do I have to stick with brand X resin if I buy a brand X printer? How's the odor? In general yes. There are so many opinions on resin brands (most of them are similar chemistry) that I haven't pieced together any kind of useful answer to your middle question. Odor depends on brand and sometimes color. Odor isn't the problem...that just means you can actually smell the fumes. You don't want the fumes, whether it smells bad or not. Put it in the garage, or in a closed room near an open window. I have a regular Photon, I've only used the green Anycubic resin it came with (I don't print large things, or often). I have a bottle of Elegoo gray up next, which is very popular with Photon users.
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Jun 13, 2020 19:15
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Sorry it’s from reddit https://old.reddit.com/r/CatastrophicFailure/comments/h86hj2/gasoline_tank_truck_went_airborne_after_explosion/
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Jun 13, 2020 19:18
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`Nemesis posted:Sorry it’s from reddit https://i.imgur.com/6os8oSe.mp4 Embed for those who don't want to click through. That's a baaaad day.
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Jun 14, 2020 04:56
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Memento posted:https://i.imgur.com/6os8oSe.mp4 That is truly hard to comphend that a) that was a semi and B) how goddamn fast it was travelling
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Jun 14, 2020 05:09
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Memento posted:https://i.imgur.com/6os8oSe.mp4 This is breaking my brain a little. If this footage is real the amount of kinetic energy in that trailer is amazing.
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Jun 14, 2020 07:11
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BitBasher posted:This is breaking my brain a little. If this footage is real the amount of kinetic energy in that trailer is amazing. https://www.smh.com.au/world/asia/massive-tanker-explosion-injures-more-than-100-in-china-20200614-p552ds.html Even after you know it's real, the tanker REALLY did go flyng at a considerable percentage of the speed of sound it still STILL strains credibility.
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Jun 14, 2020 08:08
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Surely the truck was already barreling along at 100km/h before it exploded, and carrying all of that momentum into its flight.
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Jun 14, 2020 08:29
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Wouldn't be surprised if that was from the explosion alone, really. Liquefied gas is under some good pressure (assuming lpg and 90f like Beijing was today, 150psig) and if the tanker got split the right way, you could end up with like 2/3 of an 11mt tanker getting propelled by an area of 7000in² for a force of 1.05 million pounds until the propane disappears and isn't flash boiling and rocketing the tanker around anymore. Pressurized cylinders of any kind are FUCKIN BAD NEWS in an accident. When they rupture or the valve gets busted off they tend to turn into finless, directionless rockets. They will straight up RUIN. YOUR. poo poo.
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Jun 14, 2020 11:48
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This is why you have to have warning signs if you store pressurized gas bottles, so in case of a fire firefighters are aware of the risk.
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Jun 14, 2020 11:57
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Memento posted:Surely the truck was already barreling along at 100km/h before it exploded, and carrying all of that momentum into its flight. Kastein explained it with some math but no, the truck was probably standing still. I saw (video, photos) of a industrial accident in the early 90's near Sydney that https://www.newscientist.com/article/mg12617110-800-liquid-petroleum-gas-explosion-outside-sydney/ quote:ONE OF the largest non-atomic explosions ever experienced in Australia The tank itself was booted considerably more into the air - the container itself was about 100ton The probable ignition source was a truck altho no one really knew as what remained of the truck was a puddle of metal
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Jun 14, 2020 12:15
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Largest non-atomic. Has Australia experienced atomic explosions?
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Jun 14, 2020 16:15
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Yes -- the UK tested its atomic bombs there. https://en.wikipedia.org/wiki/British_nuclear_tests_at_Maralinga
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Jun 14, 2020 16:19
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Cojawfee posted:Largest non-atomic. Has Australia experienced atomic explosions? It did once or twice when the Emu War very briefly went nuclear. The UK conducted 12 nuclear tests in Australia in the 50s
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Jun 14, 2020 16:20
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It explains why about everything living there wants to kill you.
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Jun 14, 2020 19:29
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C-Bangin' it 
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Slightly less explodey than atomic bombs and LPG depot disasters and whatnot, when I was a teenager my side of the street backed on to some woods/fields and at the end of the street was my friend's house. We spent many a night out behind his house around a fire drinking and doing drugs, mostly just smoking weed, but sometimes other stuff as it was the 90's and acid was in fashion again. We ended up burning many things, Commodore 64, bowling balls, trampolines etc, but one time someone put an aerosol can of Muskol in the fire. For those of you who've never heard of it, its a mosquito repellent. I don't know about now, but it was super chemically back then and liked to burn. Welp, the fire heated the can up, and the bottom blew off. Flames shooting out the bottom it took off like a missile, and flew about 100 feet before landing somewhere in the trees. No forest fires were caused by this. Thanks for reading my lame story.
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Jun 14, 2020 19:54
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wesleywillis posted:Slightly less explodey than atomic bombs and LPG depot disasters and whatnot, when I was a teenager my side of the street backed on to some woods/fields and at the end of the street was my friend's house. We spent many a night out behind his house around a fire drinking and doing drugs, mostly just smoking weed, but sometimes other stuff as it was the 90's and acid was in fashion again. We ended up burning many things, Commodore 64, bowling balls, trampolines etc, but one time someone put an aerosol can of Muskol in the fire. For those of you who've never heard of it, its a mosquito repellent. I don't know about now, but it was super chemically back then and liked to burn. Welp, the fire heated the can up, and the bottom blew off. Flames shooting out the bottom it took off like a missile, and flew about 100 feet before landing somewhere in the trees. No forest fires were caused by this. Thanks for reading my lame story. We did the tennis ball on fire thing, and hitting 22 rounds with hammer (my friend got clipped by the shell, cut him). Threw some old mortar fireworks down a drain once in a suburb, it blew out a geyser of sparkles, and was loud as hell, got the hell out of there quickly. Oh also hit a mailbox from a moving car, with a bowling ball...that was hilarious at the time.
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Jun 14, 2020 20:05
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wesleywillis posted:We ended up burning many things, Commodore 64 This is the worst part of the story. 
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Jun 14, 2020 21:27
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I want this to be true. https://www.audiforums.com/forum/www.audiforums.com/forum/showthread.php?t=80267 quote:Hey guys, I've got a 98 1.8T. I've had a k04 and chip for a while and wanted to get more performance. I was recommended to port and polish the intake and exhaust. We found out they used abrasive material to do it like gritty sand. So I got with my friend that tunes Hondas and we decided to try it ourselves. We got a bag of sandblasting sand and hooked up into the intake and started the car. We had to hold the gas so it would run. He wanted to let the engine suck in the sand through the intake so it would port it out and then push it out the ehxaust so it would port the exhaust manifold.
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Jun 14, 2020 21:32
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Midjack posted:I want this to be true. It was a prank by a guy who's a giant prick
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Jun 14, 2020 21:43
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kastein posted:Wouldn't be surprised if that was from the explosion alone, really. Liquefied gas is under some good pressure (assuming lpg and 90f like Beijing was today, 150psig) and if the tanker got split the right way, you could end up with like 2/3 of an 11mt tanker getting propelled by an area of 7000in² for a force of 1.05 million pounds until the propane disappears and isn't flash boiling and rocketing the tanker around anymore. My dad used to take dangerous goods courses due to the paint and paint related chemicals he used to transport, and his description of when a BLEVE (https://en.wikipedia.org/wiki/Boiling_liquid_expanding_vapor_explosion) happens always shocks me to this day.
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Jun 15, 2020 00:58
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Colostomy Bag posted:It explains why about everything living there wants to kill you. It wanted to kill you long before the nukes. The only thing that the nukes did was confirm nuclear weapons are not enough gun.
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Jun 15, 2020 01:23
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Nah that's bullshit hey. Nothing here really wants to kill you it just can and will if you gently caress with it. Things like bears on the other hand, they might get the idea that you're pretty bloody tasty and absolutely go to town on you. I guess salties fall into that category but if you've got your head bolted on properly it's not really an issue. I'll take a few dozen lethal spiders and snakes over something that wants to eat me every day of the week and twice on Sundays.
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Jun 15, 2020 01:55
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We killed the bears into less numbers than a single spiders nest. Also bears never fall the gently caress out of random poo poo.
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Jun 15, 2020 02:05
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Wasabi the J posted:We killed the bears into less numbers than a single spiders nest. Fun florida fact: Gators can and do climb trees. They will also fall out on you.
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Jun 15, 2020 02:11
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What?! That's messed up
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Jun 15, 2020 02:17
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Aren't gators relatively harmless? It's hard to judge from the other side of the world but they don't seem that bad compared to a big saltie.
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Jun 15, 2020 02:19
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The greatest trick conservationists pulled was protecting vast swaths of the rockies (both US and Canada) for us to enjoy "forever" but letting the bear populations climb back up so everyone's constantly afraid of getting mauled to death. Obviously it's a pretty rare occurrence but it's always in the back of your mind.
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Jun 15, 2020 02:25
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We've got both here and both will happily murdilate the poo poo out of you. While crocs can get a bit bigger, gators can still get plenty big with an added bonus of seemingly being more naturally curious about what you're doing from my personal experience.
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Jun 15, 2020 02:28
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xzzy posted:The greatest trick conservationists pulled was protecting vast swaths of the rockies (both US and Canada) for us to enjoy "forever" but letting the bear populations climb back up so everyone's constantly afraid of getting mauled to death. It's in the back of your mind until you come around a corner while hiking alone and surprise a bear.
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Jun 15, 2020 04:14
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make more noise
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Jun 15, 2020 04:19
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Walk around a rock and surprise a bear? Calmly walk backwards until the bear goes away. Bears rarely attack humans, and generally only those that have learned humans keep delicious food in strange packages. Walk around a rock and surprise a bear cub?
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Jun 15, 2020 04:33
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I have had 2 black bears get spooked by me before I had time to process. Leads me to characterizing the black bears being more like oversized raccoons. Wasabi the J fucked around with this message at 04:48 on Jun 15, 2020 |
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Jun 15, 2020 04:45
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"They can smell fear!!" "I'm not surprised, I just poo poo myself!"
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Jun 15, 2020 04:53
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Yeah black bears mostly just want to raid your tasty tasty garbage bin. Grizzly bears? Look. The. gently caress. Out.
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Jun 15, 2020 05:01
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Midjack posted:I want this to be true. This actually has precedent in some turbine engines, even if this instance is false. Operating in sandy/dusty environments can reduce the engine flushing requirement because the particles clean everything right up.
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Jun 15, 2020 05:05
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LifeSunDeath posted:We did the tennis ball on fire thing, and hitting 22 rounds with hammer (my friend got clipped by the shell, cut him). Threw some old mortar fireworks down a drain once in a suburb, it blew out a geyser of sparkles, and was loud as hell, got the hell out of there quickly. Oh also hit a mailbox from a moving car, with a bowling ball...that was hilarious at the time. Yo, what'd you do to get that sweet AV I bought you removed? Years ago the boys and I were out camping, one of us dropped a Coors Light into the fire, since Coors light is cheap, and we have had plenty, they didn't risk picking it out, and grabbed another. Several minutes later, the can ruptured, flying about 75 feet into the river in a perfect ballistic arc, propelled by a jet of steam and CO2. We spent the rest of the night trying to replicate the experiment, but no combination of proximity and angle yielded as impressive a result.
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Jun 15, 2020 05:27
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There's a rhyme about bears to tell you what to do if you encounter one. If it's black, fight back If it's brown, lay down If it's white kiss your rear end goodnight tl;dr don't gently caress with polar bears
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Jun 15, 2020 05:37
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No sir I don't want to lie down. There's pee on the ground now. 
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Jun 15, 2020 09:17
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