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Blindeye posted:First time to have my own example of a horrible failure. Bought myself an old truck ('97 Silverado with a 350) and been slowly fixing it up. One of my preventative pieces of maintenance is replace the ancient distributor cap and rotor with genuine OEM ACDelco parts. Well, I can tell you that Spectra Premium isn't so hot either. Which is a shame because I consider them a great company, and actually thought I had bought a World Power Products unit. I'll have to see if maybe it was rebranded? Bought another one for a friend at the same time so hopefully he has the box, I don't think he's used it yet.  
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May 4, 2021 15:31
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https://twitter.com/engineeringvidz/status/1390347167986946049?s=20 This might not entirely belong here because if you're stuck and you need to weld, it's better than the alternative. But also, 
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May 6, 2021 17:56
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Krakkles posted:https://twitter.com/engineeringvidz/status/1390347167986946049?s=20 Considering the phone in using now has a divot in the screen from melted slag, it's going to be a no from me, dog.
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May 6, 2021 19:40
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Probably hell on the camera sensor, but I don't really know how much UV they're designed to handle. In a pinch, though...
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May 6, 2021 19:44
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StormDrain posted:Considering the phone in using now has a divot in the screen from melted slag, it's going to be a no from me, dog. Darchangel posted:Probably hell on the camera sensor, but I don't really know how much UV they're designed to handle.
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May 6, 2021 20:26
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HDR welding is awesome. https://youtu.be/gtTdiqDqHc8 Horrible botanical failures: 
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May 6, 2021 23:38
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Phanatic posted:HDR welding is awesome. Sign me the gently caress up. 
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May 6, 2021 23:59
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I doubt you can really see the puddle well enough to weld effectively, and yeah the UV is probably turbo loving that poor CCD sensor.
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May 7, 2021 01:27
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Just buy a $500 hood and you can see everything beautifully and know for certain that you're safe
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May 7, 2021 05:12
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Comedy option: remove hood, drive there, buy and bolt on hood, drive home. Edit: gently caress wrong thread
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May 7, 2021 05:32
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The Door Frame posted:Just buy a $500 hood and you can see everything beautifully and know for certain that you're safe My harbor freight hood works great. At least that's what people tell me. I'm blind now, you see.
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May 7, 2021 16:32
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kastein posted:Comedy option: remove hood, drive there, buy and bolt on hood, drive home. That's a perfect misunderstanding. Good welding hoods are worth the price.
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May 7, 2021 19:15
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Astonishing Wang posted:My harbor freight hood works great. At least that's what people tell me. I'm blind now, you see. Be nice to your eyes. StormDrain posted:Good welding hoods are worth the price. He's right you know.
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May 8, 2021 01:01
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cursedshitbox posted:Be nice to your eyes. a weird flip-side of this is that I’ll lend someone my welder long before I’ll lend them my helmet
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May 8, 2021 16:46
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cursedshitbox posted:Be nice to your eyes. Even the cheap ones block UV by default. They might flash you, but you aren't getting sunburned eyeballs with one. AvE (puke) tested it and found that yup, even on grind mode, they blocked UV (it's the lens that does it).
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May 8, 2021 22:33
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I've been a fan of my $280 Jackson - but I recently tried an Optrel and now I want to spend $$$. https://www.jacksonsafety.com/product-page/truesight-ii-digital-variable-adf-black
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May 8, 2021 22:37
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sharkytm posted:Sign me the gently caress up. https://www.youtube.com/watch?v=mPTCq3LiZSE
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May 8, 2021 22:40
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I've got an Optrel Crystal, and I don't know how I welded in the dark for so long. It's beautiful
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May 8, 2021 23:04
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Something a bit different, horrible gun failure. https://youtu.be/1449kJKxlMQ It's long and the actual failure only is ~10 seconds of the video, at about 4:20, but it's just mind boggling how bad it almost was for the shooter. Also, a great reminder to wear safety glasses whenever you do anything
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May 10, 2021 06:56
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Holy gently caress.
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May 10, 2021 09:42
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I cannot get over how unbelievably insufficient those threads are. These are the locking lugs on the bolt in a Barrett M99 rifle which is basically the same thing (single shot .50BMG anti-materiel rifle)  The Serbu has this holding the cap on that nearly decapitated the dude 
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May 10, 2021 10:08
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Memento posted:I cannot get over how unbelievably insufficient those threads are. 85kpsi sounds like a lot, but its only a 55% safety factor over the number he quoted for a "normal" 50bmg load before the threads shear. idk about firearms, and im not a mechanical engineer, but even non-life-critical stuff at work gets a safety factor of 2 or 3 if it's at all structurally significant
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May 10, 2021 10:37
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Is shooting a 50cal really that different in terms of the skill required etc than shooting a 22 or air rifle at some appropriately scaled down range? Dunno why you'd maximize the size of explosion you're setting off next to your face (and, as it turns out, your neck veins)
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May 10, 2021 10:39
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One weird trick to turn your .50 BMG into a handgun
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May 10, 2021 10:53
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Hell yea monetize that video of you getting maimed.
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May 10, 2021 10:56
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I can see the appeal of renting a big gun at the range. Buying one just seems masochistic.
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May 10, 2021 10:58
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Here's a setup from a video where some dudes were putting bullets through a gun when they didn't know what the result would be. Standing behind a berm, pulling a string to pull a trigger, they put increasingly stupid handgun rounds through a .410 shotgun to figure out where it would fail.
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May 10, 2021 11:06
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Hey it’s that shotgun. https://www.youtube.com/watch?v=wAnbDvLIAac The round they fired through that thing is rated for four times the pressure as the round the gun is designed to accept, and no doubt it went well over that because the bullet is ten percent larger than the barrel (!). Not every gun will have that exceptional factor of safety, but Serbu didn’t even try. Platystemon fucked around with this message at 11:30 on May 10, 2021 |
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May 10, 2021 11:24
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aphid_licker posted:Is shooting a 50cal really that different in terms of the skill required etc than shooting a 22 or air rifle at some appropriately scaled down range? Dunno why you'd maximize the size of explosion you're setting off next to your face (and, as it turns out, your neck veins) Bigger boolet makes bigger boom Bigger boom is more fun (someone please lend me a railway gun)
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May 10, 2021 11:50
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aphid_licker posted:Is shooting a 50cal really that different in terms of the skill required etc than shooting a 22 or air rifle at some appropriately scaled down range? evil_bunnY fucked around with this message at 12:22 on May 10, 2021 |
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May 10, 2021 12:20
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Ah, didn't watch the whole thing but is this that one that an OORAH type friend of mine was just telling me about where the shrapnel severed his jugular vein and the dude was a HARDASS MAN so he just stuck his thumb in it to plug it up and drank a beer or something And now they sell JUST STICK YOUR THUMB IN IT t-shirts
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May 10, 2021 13:01
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Data Graham posted:Ah, didn't watch the whole thing but is this that one that an OORAH type friend of mine was just telling me about where the shrapnel severed his jugular vein and the dude was a HARDASS MAN so he just stuck his thumb in it to plug it up and drank a beer or something Yeah, but it was his father that saved his life and made him hold his thumb on his vein. Credits god for saving his life in the video though!
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May 10, 2021 13:29
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Yikes. When he started talking about using his thumb to stop from bleeding out it made me a little sick just imagining having to deal with that.
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May 10, 2021 14:07
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Gun Jesus all but directly said "a properly engineered firearm has multiple systems/pieces in place that any one of would have broken this chain." https://www.youtube.com/watch?v=71OGayW7CnI
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May 10, 2021 14:43
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toplitzin posted:Gun Jesus all but directly said "a properly engineered firearm has multiple systems/pieces in place that any one of would have broken this chain." Ah yes, my documentary.
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May 10, 2021 14:46
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toplitzin posted:"a properly engineered hazardous system, process, or piece of equipment has multiple systems/pieces in place that any one of would have broken this chain." The thesis statement of every bad accident's post mortem investigation
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May 10, 2021 17:37
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toplitzin posted:Gun Jesus all but directly said "a properly engineered firearm has multiple systems/pieces in place that any one of would have broken this chain." If I remember correctly, Ian tries really hard to not blame the gun itself, which is 90% to blame, but does still bring forward a few examples of much lower pressure guns that had safety measures for exactly this method of failure because it will gently caress the shooter up pretty badly. Yes, he was shooting super hot ammo, but even if it was double the pressure and failure was inevitable, it should have failed in a way that directs the explosion away from the face and neck IIRC, this almost exactly what cost one of the Mausers his eye, and made his future locking mechanism designs much more robust
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May 10, 2021 18:27
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Blindeye posted:The thesis statement of every bad accident's post mortem investigation In the ISO 9001 quality system, it is never enough to simply say something is the root cause of a problem, you have to prove it. You can do this with a 5 why's or fish ladder chart, but both organizing tools rely on identifying multiple problems leading up to the accident. You stop digging for a root cause when you hit something that is systematically not changeable or run into a fundamental law of physics.
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May 10, 2021 19:37
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Applebees Appetizer posted:Yikes. When he started talking about using his thumb to stop from bleeding out it made me a little sick just imagining having to deal with that. Now let's talk about hockey.
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May 10, 2021 21:29
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aphid_licker posted:Is shooting a 50cal really that different in terms of the skill required etc than shooting a 22 or air rifle at some appropriately scaled down range? Dunno why you'd maximize the size of explosion you're setting off next to your face (and, as it turns out, your neck veins) The difficulty of hitting a target at long range goes up nonlinearly with range. That said if someone really wants to shoot long range, which is the only meaningful purpose for a round that large, there are rounds that are notable superior to the .50. The .338 Lapua is a smaller cartridge that is basically superior in every single way for long distance shooting. In long range shooting competitions the sport is generally ruled by 6mm, 6.5mm and 7mm rounds out to 1000 yards. Basically, the only people who ever want a .50 are video game and 80s/90s bad movie loving jackasses that want to spend more per shot and per gun for inferior performance, entirely because ".50 IS AWESOME BRO!" They are the gun equivalent of barbed wire tattoo sporting coal rolling bro truck people.
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May 10, 2021 22:03
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