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i was planning out a way overly ambitious sci-fi halloween costume complete with laser gun, like, months ago, but then i realized i have no money i wonder what it would take to build a "laser rifle" around a 100 watt CO2 laser tube, powered by like a leaf blower motor strapped to your back connected to a generator. i know they need active cooling but maybe the motor could run a circulator pump too and then have some heat sinks somewhere iunno. that would make for a badass costume shame that CO2 is what like 10 microns, you'd have to add another little laser diode module to it just so you could see the beam
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Oct 11, 2013 06:13
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also heh https://twitter.com/HardSciFiMovies
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Oct 11, 2013 06:49
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 hahaha
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Oct 11, 2013 06:54
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"A programmer finds himself trapped inside a video game. He is eventually fired from his job and evicted from his house." story checks out
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Oct 11, 2013 07:46
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ol qwerty bastard posted:powered by ol qwerty bastard posted:connected to a generator
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Oct 11, 2013 07:49
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like a small gasoline engine? was that not clear
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Oct 11, 2013 08:18
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ol qwerty bastard posted:like a small gasoline engine? was that not clear anyway why not just use a car battery or something? or would that not be enough? idk i'm not an engineer
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Oct 11, 2013 08:22
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it'd probably drain a car battery like whoa fast and i don't even know if it could really handle outputting the necessary current which would be several hundred watts at least i dunno, it's probably not even possible due to some factor that i'm not considering (like "requires 300 pounds of heat sink" or "the power supply takes up an entire cabinet" or something) i just think it would be cool to have a 100 watt handheld laser (for some value of "handheld") no idea what you could even do with it though; a pulse laser would be way better for shooting things
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Oct 11, 2013 08:41
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you can get ~20 - 40 watt industrial IR diode lasers that would meet certain definitions of handheld. it's still really useless though since they need to be watercooled and you need another 50 pounds of optics just to get the beam into something resembling a point rather than an arc. and yes, the power draw is ridiculous. any battery you could carry would give you a few seconds at full power, then drop off to nil pretty quickly. just stick with the diodes out of projectors. they're tiny, push 1-2 watts, you can power them off a few D-cells for hours, and they're still powerful enough to burn poo poo when focused.
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Oct 11, 2013 16:10
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alternatively, coilguns are pretty cool and dead simple to build if you want a sci-fi weapon for a costume then you can plink cans like a bb gun
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Oct 11, 2013 16:17
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ol qwerty bastard posted:alternatively, coilguns are pretty cool and dead simple to build if you want a sci-fi weapon for a costume
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Oct 11, 2013 16:21
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FMguru posted:even easier to bring a real gun and shoot people with it yes, but that seems to lack the sci-fi authenticity.
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Oct 11, 2013 16:36
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infernal machines posted:yes, but that seems to lack the sci-fi authenticity. just paint it silver and stick lots of brass pipes and gears and stuff all over, it will then be v. sci-fi and impressive to your friends ol qwerty bastard posted:alternatively, coilguns are pretty cool and dead simple to build if you want a sci-fi weapon for a costume railgun's definitely the way to go. hauling around a mega-ampere current supply and a dozen replacement rails would probably interfere w/ your beer-drinking more than many other costumes unfortunately.
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Oct 11, 2013 17:27
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infernal machines posted:yes, but that seems to lack the sci-fi authenticity.
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Oct 11, 2013 17:55
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i would like a model of deckard's gun, very much.
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Oct 11, 2013 17:56
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wait is somebody itt literally considering strapping a gas-powered generator to their back for a halloween costume
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Oct 11, 2013 18:05
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better that than an unlicensed nuclear accelerator 
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Oct 11, 2013 18:07
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Werthog 95 posted:wait is somebody itt literally considering strapping a gas-powered generator to their back for a halloween costume
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Oct 11, 2013 18:07
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Sham bam bamina! posted:blade runner no idea the context but i must quote blade runner at every mention
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Oct 11, 2013 18:11
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Oct 11, 2013 20:02
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infernal machines posted:i would like a model of deckard's gun, very much. https://www.youtube.com/watch?v=4DUULvPJTgk
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Oct 11, 2013 20:14
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Oct 11, 2013 20:51
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Sham bam bamina! posted:it actually wasn't because you used the word "motor" and electric leaf blowers exist a 100 watt laser would drain a typical car battery in 3-5 seconds so you'd be lugging around a lot of car batteries to put on much of a show you could switch to a custom liion battery pack to save a lot of weight but you'd need to have active cooling on the battery pack so in a backpack sized power pack it might be a wash idk
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Oct 11, 2013 20:54
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an super/ultracapacitor would probably be a better way to power a laser than a car battery since it's designed from the start to quickly discharge a whole bunch of energy all at once. it would also be much quicker to charge so you'd just have to plug into a wall socket between shots. or just shoot it while you're plugged into the wall, idk. just smack a bunch of these things in parallel and go to town. lipos occasionally explode, especially if you sit on it while its in your backpack and then try to charge it or w/e. possibly not the best choice for a party (or the best choice, depending on the party) comedy option: chemical laser
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Oct 11, 2013 21:49
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why would you reinvent the wheel when you can just use whatever the ghostbusters used duh
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Oct 11, 2013 22:02
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this loving blonde lady admiral has been nothing but dumb and myopic since her very first appearance. if i wasa member of the admiralty i'd strip and smelt her brass this instant
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Oct 12, 2013 01:47
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Smythe posted:this loving blonde lady admiral has been nothing but dumb and myopic since her very first appearance. if i wasa member of the admiralty i'd strip and smelt her brass this instant everyone in starfleet command is terrible
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Oct 12, 2013 01:50
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im going to see gravity today. is it worth seeing in 3d?
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Oct 12, 2013 01:55
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this is yospos its a loving miracle that anyone here can accept movies with sound
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Oct 12, 2013 02:28
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in this ep of ds9 fker bitch quark will use his super semite powerZ to accountant his way out of klingon blood feud
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Oct 12, 2013 02:49
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Gus Hobbleton posted:this is yospos its a loving miracle that anyone here can accept movies with sound get out of here with your stupid loving hollywood 'colour film' bullshit, you bunch of loving sheep. sound of music? what a hunk of loving garbage
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Oct 12, 2013 03:12
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Smythe posted:if i wasa member of the admiralty i'd strip and smelt her brass this instant nice euphemism
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Oct 12, 2013 03:17
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Gus Hobbleton posted:this is yospos its a loving miracle that anyone here can accept movies with sound watch movies on linux problem solved
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Oct 12, 2013 03:17
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Al! posted:watch movies on linux problem solved old but i loled
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Oct 12, 2013 03:18
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Can-O-Raid posted:get out of here with your stupid loving hollywood 'colour film' bullshit, you bunch of loving sheep. sound of music? what a hunk of loving garbage nerd teen's ironic post unintentionally reveals profound truth
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Oct 12, 2013 03:35
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Ganguro King posted:im going to see gravity today. is it worth seeing in 3d? yes, and IMAX if you can swing it iPhone auto-capitalizes IMAX heh
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Oct 12, 2013 04:06
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haveblue posted:yes, and IMAX if you can swing it Star War Sex Parrot fucked around with this message at 04:21 on Oct 12, 2013 |
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Oct 12, 2013 04:18
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i'm gonna see if i can get work to pay for me to go see gravity in imax 3d if i take this indian guy with me
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Oct 12, 2013 04:42
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holy poo poo gravity was fuckin awesome. def glad i saw it in 3d. there were parts of the movie were i could have started sperging, but it was too exciting to get bogged down in that poo poo. i kinda thought the dolby atmos thing was a bit gimmicky though.
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Oct 12, 2013 15:54
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Oct 12, 2013 16:18
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