Vernii posted:

In some designs the reaction chamber is spun like a centrifuge. This encourages the heavier uranium to stay in the chamber instead of leaking into the exhaust. This makes for a rather spectacular failure mode if the centrifuge's bearings seize.

Say Nothing posted:

Three-Phase posted:

In some places (particularly in the power generation industry):

Red light = On, closed, energized (red indicating a dangerous state)
Green light = Off, open, de-energized (green indicating a safe state)

But from location to location there are different indicator color schemes for different things, so you need to be careful. What's worse is that in some places on one piece of equipment it uses one color scheme, then on a vendor's piece of pre-manufactured equipment it's the other, and on another device it's another color scheme.

Also a green "safe" indication isn't a bulletproof vest. Like an open breaker to a capacitor bank, the capacitors might contain a lethal stored charge that may take a short while to discharge (or need to be manually discharged), and green also doesn't mean it's locked out and tagged out.

Rudager posted:

My wife says "close/open the light" instead of "turn off/on the light" and it drives me loving insane.

No amount of me explaining that closing the circuit turns the light on has every stopped her.

The Dark One posted:

Is she a francophone?

chitoryu12 posted:

It's got instructions on how to build single shot pipe guns for .22 caliber, 9mm, .45 ACP, and .38 caliber pistols and pipe guns for 7.62mm rifle rounds and 12 gauge shotgun shells. Plus plenty of explosive and incendiary recipes and ways to use them (like a chemical-based Molotov in a plastic bottle and using a pipe and black powder to make a booby trap shotgun or grenade launcher). It even shows how you can refill spent primers with crushed strike-anywhere matches (normally firearm primers are the hardest part to improvise).

itskage posted:

Okay thanks. I that is actually interesting I was expecting some weird poo poo more likey to blow up the person making it stuff.

Rudager posted:

My wife says "close/open the light" instead of "turn off/on the light" and it drives me loving insane.

No amount of me explaining that closing the circuit turns the light on has every stopped her.

FrankeeFrankFrank posted:

NMS

http://vidmax.com/video/115041--nsfw-The-way-these-2-died-will-leave-you-speachless

Not a very good or long video... it's probably better that way.

surebet posted:

chitoryu12 posted:

Oh, a lot of the stuff in the book is pretty likely to blow you up if you're not careful with it. Black powder is the simplest explosive there is to make from scratch, but one stray spark from using the wrong material for your tools or getting your mix a little too close to flame and goodbye everything. The book does let you make some more complex recipes, but you still want basic chemical safety knowledge (especially with the caustic acids used for some of them).

Even with an expert, homemade explosives with improvised ingredients and parts are always finicky. A perfectly built pipe bomb may fail to explode like you planned simply because the length of pipe you chose developed a crack or hole somewhere and it let all the pressure out without an earth-shattering kaboom. Or the fuse you got doesn't burn consistently every time, so you're off by a few seconds at least when you light and throw it.

Acid Reflux posted:

I remember reading through that TM as a teenager, and being awed at how easy some of the stuff was to make. I'm also still horrified to this day at the one variation of napalm that involves boiling goddamn gasoline to make it.

FrankeeFrankFrank posted:

NMS

http://vidmax.com/video/115041--nsfw-The-way-these-2-died-will-leave-you-speachless

Not a very good or long video... it's probably better that way.

H2SO4 posted:

Here's someone's story about trying that: https://www.youtube.com/watch?v=BLXSt7eVDPU

jetz0r posted:

I didn't try to make the one that involved boiling gasoline, BECAUSE HOW THE gently caress DO YOU BOIL GASOLINE WITHOUT MAKING A HUGE FIREBALL. But I did make the styrofoam napalm stuff. It was less fun to gently caress around with than normal gasoline.

Edit: Thanks BBS text files for giving me so many terrible ideas as a teen.

chitoryu12 posted:

The boiling point of gasoline is between 100 and 400 degrees Fahrenheit depending on the exact fuel; this is why gasoline evaporates over time (creating dangerously flammable fumes that are much easier to ignite than the liquid itself). The actual ignition temperature is about 495 degrees Fahrenheit, so you can safely boil it as long as there's no open flames around to risk igniting fumes. This is also why dropping a match or lighter in a puddle or tank of gasoline is more likely to extinguish the flame than ignite it, but dropping in a road flare or something means you better run.

chitoryu12 posted:

The boiling point of gasoline is between 100 and 400 degrees Fahrenheit depending on the exact fuel; this is why gasoline evaporates over time (creating dangerously flammable fumes that are much easier to ignite than the liquid itself). The actual ignition temperature is about 495 degrees Fahrenheit, so you can safely boil it as long as there's no open flames around to risk igniting fumes. This is also why dropping a match or lighter in a puddle or tank of gasoline is more likely to extinguish the flame than ignite it, but dropping in a road flare or something means you better run.

Groovelord Neato posted:

So what'd those dudes actually do.

chitoryu12 posted:

The boiling point of gasoline is between 100 and 400 degrees Fahrenheit depending on the exact fuel; this is why gasoline evaporates over time (creating dangerously flammable fumes that are much easier to ignite than the liquid itself). The actual ignition temperature is about 495 degrees Fahrenheit, so you can safely boil it as long as there's no open flames around to risk igniting fumes. This is also why dropping a match or lighter in a puddle or tank of gasoline is more likely to extinguish the flame than ignite it, but dropping in a road flare or something means you better run.

Lurking Haro posted:

Wrapping up work.

Simply brushing something spinning is enough to get pulled in. Steel cable makes it even easier to get caught on. Maybe the second guy tried to help the first one.
Unless somebody knows a source, one can only guess why they got caught.

Three-Phase posted:

I've been at a couple of different motor manufacturing/rewinding shops. The motors they built ranged from small (couple hundred horsepower) to much larger (over 10,000 horsepower) electric motors and generators.

The machines are bolted down in a secure testing area and put through their paces - checked for things like proper temperature rise, current balance, overspeed (it's done but kinda' pointless for AC motor applications - I think it's more for generators) and vibration.

Sometimes I see guys working awfully close to the exposed drive end of the rotor! Especially during things like checking for vibration levels, checking for magnetic center, and balancing. Call me a worrywart but that makes me cringe when it comes time to check for those things.

jetz0r posted:

I actually mixed gasoline into a citronella bucket candle by pouring gas on top of the wax, and lighting it on fire to melt the contents, then covering the bucket to snuff out the fire and let the mixture cool. I didn't have any electric hot plates, so trying to boil gas would have involved an open flame under the container. Leading to the expected fire ball or column of flame. Or just accept that everything is going to be on fire and work from there.

This sounds like something from the FOOF thread, not very work related!

ACES CURE PLANES posted:

That still isn't good PPE.

This is.
https://www.youtube.com/watch?v=eA46WFX7jWA

Say Nothing posted:

simplefish posted:

Yeah, for dead dudes and for the spelling of "speechless"

Zamboni_Rodeo posted:

I didn't know humans could bend like that.

kanuck posted:

They can't!

Lurking Haro posted:

Maybe the second guy tried to help the first one.

Three-Phase posted:

Butane hash oil is where TCC meets OSHA

https://www.youtube.com/watch?v=3KHRxe9LAiU

Groovelord Neato posted:

So what'd those dudes actually do.

Platystemon posted:

http://i.imgur.com/EzQcJEE.gifv

Boiled Water posted:

While it looks impressive, and curtain my is impressive he hasn't lost any fingers yet, that is an inefficient way if butchering pork. Depending on wages that while cutting sessions yields €0.5-1 per animal.