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All of our lathes at uni had both spring-loaded chuck keys and interlocked chuck guards, so you couldn't even turn the thing on with a key in it. The biggest risk was electrocution when the Victorian roof let rain drip onto the machine. What we did have (briefly) as a bench-top belt sander that could be used to project objects across the workshop when they just happened to slip out of your hand. After a stray piece of steel bar broke the hastily installed plexiglass screen the sander was replaced with a set of worn-out files as punishment.
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Mar 26, 2018 20:35
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I've always wanted to rig a microswitch on the key holder so our lathe won't run without the key in its "home".
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Mar 26, 2018 20:45
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Or naturally, an old AAA battery.
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Mar 26, 2018 20:48
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The Door Frame posted:It broke my finger, tore apart the joint capsule, never healed properly, contaminated my oil with blood, and still hurts every day. I see what you did there.
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Mar 26, 2018 20:50
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Back in the day at the electric motor factory the rednecks running the CNCs figured out they could use compressed air to get the steady rest bearings up to ludicrous speed and send them flying across the plant, punching holes in walls and such.
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Mar 26, 2018 20:51
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If you want to get into horribly unsafe work environments every day at my first job out of highschool at a lumber mill was essentially playing "OSHA violation bingo." Highlights included spraying oil-based varnish in an open shop (and nearly getting caught by the fire department.) They covered for a career alcoholic who would would routinely show up to work at noon in his bar-hopping clothes from the night before, working in quality control (he took trim pieces out of a moulder and cut splits/knots and other defects out) that occasionally required driving a forklift. Which he crashed into a load-bearing wall. Which they half-assed fixed with a rough sawn piece of poplar and about a dozen drywall screws. They also had a number of pieces of antiquated equipment that I'm still shocked they got away with using. One was a planer that was so old it still had a belt-drive power takeoff pulley installed (from days when factories were run by steam power), which they had adapted to run off of an electric motor at some point. With all of the turn of the century PTO equipment still installed, hanging precariously off the side without any kind of cage separating the "rip your arm off" bits from the operator. Another was a ripsaw dating back to about the same period with faulty anti-kickback guards that resulted in someone having a roughly half-inch thick piece of oak fly backwards out of the saw and pass through his thigh - barely missing both his balls and femoral artery in the process.
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Mar 26, 2018 21:28
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tactlessbastard posted:Back in the day at the electric motor factory the rednecks running the CNCs figured out they could use compressed air to get the steady rest bearings up to ludicrous speed and send them flying across the plant, punching holes in walls and such. Oh god, this. I almost got my head ventilated when one of my coworkers was putting lathe inserts on a screwdriver and spinning them up. Instead, it ricocheted off the concrete floor, leaving a mark, before going straight up and punching a hole in the air duct 5 meters up in the ceiling.
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Mar 26, 2018 21:36
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He deserves that fate just for having a gross mountain man beard. If you're gonna have a beard trim it and style it. Goddammit
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Mar 26, 2018 23:03
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Mar 27, 2018 00:01
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ExplodingSims posted:He deserves that fate just for having a gross mountain man beard. If you're gonna have a beard trim it and style it. Goddammit It looks like he just did.
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Mar 27, 2018 00:27
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 Every time I look I see something new.
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Mar 27, 2018 00:27
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ExplodingSims posted:He deserves that fate just for having a gross mountain man beard. If you're gonna have a beard trim it and style it. Goddammit Yeah...beards usually don't grow like that on their own. That most definitely was trimmed and groomed.
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Mar 27, 2018 00:46
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Metal Geir Skogul posted:
MacGyver wants his car back
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Mar 27, 2018 01:03
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Goober Peas posted:MacGyver wants his car back a jet ski better pop out of that thing
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Mar 27, 2018 01:09
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Metal Geir Skogul posted:
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Mar 27, 2018 01:29
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Is that a dodge minivan? It probably has a blown headgasket or something.
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Mar 27, 2018 01:32
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Rigged Death Trap posted:Wanna see that lathe that can hold a 500 lb part Not around anymore, but... 
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Mar 27, 2018 01:39
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For those wondering, that's a gun barrel.
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Mar 27, 2018 01:47
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Pigsfeet on Rye posted:Not around anymore, but... Thirty years ago, I worked at a company called Marquip in Madison (they make the machines that make corrugated cardboard or at least they did), and their assembly plant was an old battleship gun barrel factory. You could see the absolutely massive concrete slabs in the floor with the old mount points for the lathes. Trying to wrap your head around just how big they were was incredible. Also, 1940s vintage overhead traveling cranes.
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Mar 27, 2018 03:31
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Pigsfeet on Rye posted:Not around anymore, but... I never once thought about how a barrel that big is made and how they contain that much pressure without bursting That is a monstrous piece of metal
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Mar 27, 2018 03:43
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The Door Frame posted:I never once thought about how a barrel that big is made and how they contain that much pressure without bursting  forging from a single piece of steel, followed by turning to sizein a similar vein, look up nuclear reactor pressure vessels sometime 
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Mar 27, 2018 03:48
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Godholio posted:Yeah...beards usually don't grow like that on their own. That most definitely was trimmed and groomed. Well at least it’s trimmed. Sagebrush posted:
It violates my intuition that thing can support its own weight when hot. And yet it does, and it requires that immense machine to shape it.
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Mar 27, 2018 04:34
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This was removed from a vehicle at my mechanic's shop today while I was there: At least the guy didn't just drive the car down to that in laziness, something on that wheel was hosed. The rotor taken off the other real wheel is behind it.
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Mar 27, 2018 06:40
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My mother uses a hammer and chisel on the drill press. A chuck key costs $1.50 but 
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Mar 27, 2018 10:27
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Bad Angus! Bad!
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Platystemon posted:Well at least it’s trimmed. My beard is what you think his is. It takes work to get it like his.
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Mar 27, 2018 15:12
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chrisgt posted:Is that a dodge minivan? It probably has a blown headgasket or something. I couldn't think of any other problem that would be a "solution" for. For one thing, the two coolant bottles being higher than the recovery tank should mean that they'll just fill it up and then overflow it, rather than refill the radiator.
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Mar 27, 2018 16:18
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Godholio posted:My beard is what you think his is. It takes work to get it like his. Literally blood, sweat, and tears.
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Mar 27, 2018 19:55
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Darchangel posted:I couldn't think of any other problem that would be a "solution" for. Hey, the random insect/small mammal that finds its way into the open bottle might suck through & wind up as leak-stopper someday!
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Mar 27, 2018 23:08
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Had a Lear 55 come in today that had to get a tire changed on the ramp before being wheeled into the hangar. Apparently a brake return line had rubbed on something (since 1982), causing a pinhole in the line, which dumped all the hydraulic fluid into the belly of the plane. They landed without flaps, had to use the emergency blow-down air bottle to get the gear down, and only had the 3000PSI air cylinder for brakes. Since there's no anti-skid and no real pressure modulation on the emergency brake system, they locked a wheel and gave a tire a flat spot. This tire was brand new four landings ago; this was its fifth landing.
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Mar 27, 2018 23:42
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Sagebrush posted:in a similar vein, look up nuclear reactor pressure vessels sometime And when you're done with that, look for photos of the Davis Besse reactor head  Pretty good overview of the incident: https://www.nrc.gov/reactors/operating/ops-experience/vessel-head-degradation/overview.html
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Mar 28, 2018 02:58
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babyeatingpsychopath posted:Had a Lear 55 come in today that had to get a tire changed on the ramp before being wheeled into the hangar. Apparently a brake return line had rubbed on something (since 1982), causing a pinhole in the line, which dumped all the hydraulic fluid into the belly of the plane. They landed without flaps, had to use the emergency blow-down air bottle to get the gear down, and only had the 3000PSI air cylinder for brakes. Since there's no anti-skid and no real pressure modulation on the emergency brake system, they locked a wheel and gave a tire a flat spot. That's not a flat spot, that's a bigass hole.  For those of us who don't know anything about stuff that flies, how long does a typical tire on this kind of plane last? I'm sure it's a shitload longer than 5 landings, but I had to ask to quell my curiosity.
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Mar 29, 2018 08:32
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Yu-Gi-Ho! posted:That's not a flat spot, that's a bigass hole. Hundreds of landings, usually!
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Mar 29, 2018 16:51
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https://i.imgur.com/Q0I8zap.mp4
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Mar 29, 2018 21:10
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Ormy posted:Hundreds of landings, usually! Generally this is completely correct, but the meat in the seat can influence that number quite a bit. Mostly downwards. 
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Mar 29, 2018 21:42
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Um. Pretty sure I'd be turning that poo poo off.
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Mar 29, 2018 21:57
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I sure as poo poo wouldn't be jamming my hand into that box just so I could record it with my phone.
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Mar 29, 2018 22:02
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Hey the fuse-bolts haven't blown yet, it's operating fine.
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Mar 29, 2018 22:09
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Mar 29, 2018 22:59
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Dave Inc. posted:Hey the fuse-bolts haven't blown yet, it's operating fine. Horrible Mechanical Failures: Hey, the fuse-bolts haven’t blown yet
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Mar 29, 2018 23:23
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As someone whos caught 480v (dc) across one hand it's not that painful.
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Mar 29, 2018 23:34
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