megalomania
February 28th, 2003, 01:42 PM
CragHack
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posted December 14, 2000 10:48 PM
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all this talk about CO2 bombs using sparkler dust as an initiation device has got me thinking. i personally cannot get sparklers where i am from. i do not know why but... what about positioning a CO2 cartridge directly over the flame of a sterno can? i know these things burn for a long time, and they produce alot of heat. a typical can of sterno burn anywhere from 100 degrees to 160 degrees (F).
<a href="http://www.sterno.com/Sterno_index.html" target="_blank">http://www.sterno.com/Sterno_index.html</a>
does anyone know how long, at like 130 degrees (F), a full CO2 cartridge would take to explode? i know Mg burns at like 5000 degrees (F)
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...Æ
[This message has been edited by CragHack (edited December 14, 2000).]
[This message has been edited by CragHack (edited December 14, 2000).]
Cricket
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posted December 15, 2000 01:56 AM
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I dont know, but I think the lid in the canister (CO2)is make of lead. If you didnt know, lead (Pb)has a very low melting piont for a metal. You can easily melt some of it on your stove in a couple minutes. So the lid would probly go, and might make it like a rocket if pointed right.
Anthony
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posted December 15, 2000 03:41 PM
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The tops of CO2 cartridges (the bit that gets punctured) are steel and I believet hey are crimped on.
I wouldb't be surprised if slow heating (like from the sterno) would just blow of the top as it is an obvious weak point.
CragHack
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posted December 15, 2000 03:50 PM
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well you could invert the CO2 powerlet and make it so the flame acts on the bottom (the no crimped part) of the CO2 thing.
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...Æ
Stone
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posted December 15, 2000 06:26 PM
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Placing it over a candle even works... just heat the side or the bottom and it should go within 30 secs.
Zero
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posted December 15, 2000 07:08 PM
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The top blows and it makes a nifty woosh and a cloud of white liquid CO2. Chances are the CO2 will put out your Stern-o, too. If you want to see a cartridge explode, leave one on the railroad tracks...
The best use, of course, is to make a cratermaker out of it (after you use it in your gun to shoot squirrels).
~Zero the Inestimable
aussie_kid
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From: Australia
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posted December 15, 2000 11:05 PM
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Yeah just a minor point...
Liquid CO2 cannot exist. CO2 goes straight from a gas to a solid, or from a solid to a gas.
Stone
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posted December 15, 2000 11:23 PM
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The CO2 bulbs in Australia only have a thin cover that is meant to be pierced, but it never breaks when it is heated.
Zero
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posted December 15, 2000 11:25 PM
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Last I checked, the CO2 in a cartridge is under enough pressure to make it go into a liquid state. It stays liquid for a spit second (especially in colder weather) after it comes out of the cart, thus the white "smoke" that comes out of the barrel of the gun. I don't think that's solid CO2... Decompressing something and having it turn into a solid doesn't make physical sense.
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~Zero the Inestimable
The A Files
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PYRO500
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posted December 15, 2000 11:34 PM
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he is probably confused, first it is true that co2 can only stay in the solid and gas state, only in room pressure (around 4 bar) but the co2 gas is compressed into the co2 cartrage, so it gives alot of heat off and compresses to a liquid like state, co2 forms a semi liquid like state at below a certan temp and will eventualy form a liquid but it cant form a solid at those temps, (except absolute zero) but when it gets released from the tank it comes out as a liquid with a low boiling temp and boild instantly giving that colling effect, witch can also freeze itself and "blow snow" ask any paintball player to hold their gun upside down and fire it (as long as they use co2) that can fuck up o rings too. hope I've been of some help
BoB-
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posted December 16, 2000 02:17 AM
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I always assumed that the depressurization of the gas causes a dramatic reduction in temerature, and because the Co2 is now colder than the air around it, it becomes visible, errr, somethin like that.
Anyways, I could have sworn I saw something about these 'bombs' in the Pyro Diary.
DarkAngel
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posted December 16, 2000 05:35 AM
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So if i wanna make a Crater Maker and i have no paintball gun or a mixer,Is it safe to open it?
--==DarkAngel==--
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Go to Section1 <a href="http://www.section1.f2s.com" target="_blank">http://www.section1.f2s.com</a> Alot off Bombs/Explosives and Homemade Weapons!!
Cricket
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posted December 16, 2000 07:45 AM
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Just open it with a nail. Just tap it and it with a hammer and it will start to so ssssss, then leave it for about 1 minute or so.
[This message has been edited by Cricket (edited December 16, 2000).]
Zero
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posted December 16, 2000 10:16 AM
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No, DO NOT open it by hitting it with a nail. The safest way, without a gun, is to secure a nail to one side of a vise, grip the cartridge in the vise with the tip on the nail, and slowly tighten the vise until the nail punctures the tip. If you hit it with a hammer, two bad things could happen:
The cart could release all its pressure and fly away at high speeds, very disasterous indoors, not to mention if it hits you in the face.
The nail could get shot out of the end of the cartridge from the pressure, after you take the hammer off. to use an age old expression, you'll poke your eye out.
With the vise, as long as the cartrige is held in securely, is far safer. Anyway, once the cart is punctured, slowly losen the vise, and all the CO2 will hiss out, making another one of those nifty white clouds. Congrats, you just wasted a C02 cartrige.
Cratermaker info can be found anywhere (including the link in my signature, below) so I won't go into posting that.
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~Zero the Inestimable
The A Files
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PYRO500
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posted December 16, 2000 03:03 PM
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uh, they arent that powerful, you can easily hold a thumbtack in ine with 1 fin ger, and they do not "rocket off" the only way you can make one fly is by sticking one end in your pellet gun and firing it with a pellet and it wil go five or six feet up with a little aid from the co2 cart, and if you heat the co2 carts (never a good idea) the liquid co2 inside starts expanding til it bursts the bottom off!
Cricket
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posted December 16, 2000 03:29 PM
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I have opened about a box (25 I believe) of these and never had one go carzy. I just tap it once, usually, and it slowly starts to go pppsssssssssssssssss(for about a minute or two). Just thought of this, dont open a whole box on your room. You might end up like Pyro 500 did that one time when his Paintball CO2 can broke. And I think the lid on the can is not lead. I remember drilling one and having to pull it off with pliers, not easy. I thought I read in a magazine that "they are lead sealed for your protection". And the nail never goes in, just enough to bearly poke a pin sized hole in it.
Anthony
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posted December 16, 2000 06:23 PM
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I've never had a problem punturing them by hand with a nail, if you're that scared, hold the nail in a pair of pliers and it it at arms length so you keep your head well away. That's what I do with ammunition.
I used the tip of a dart once and made a pin hole sized hole, the cartridge leaked for over 45 minutes! If you don't want to completely wastet he cartridge, make a small hole in it and drop it into a bottle and screw the cap on - pressure bottle bomb.
The reason it is so easy to hold a tack into the punctured cartridge is beacue oft he tiny surface area of the tack tip that the gas has to push against. If the tack tiop had a surface area of 1 square inch, it would require roughly 750 pounds of force to hold it in. But it doesn't it has a surface area of about 1/2mm so the force acting on it is tiny.
Maddoc
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From: Dizneland
Registered: SEP 2000
posted December 16, 2000 07:45 PM
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My method is to simply drill through the top with the appropraite size bit for my fuse.
I drill slowly until the hissing noise is heard, the when the hissing stops drill the rest of the way through.
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Whoa, where my fingers?
Zero
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posted December 16, 2000 07:49 PM
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I found that out the hard way once, back when I was even dumber than I am now. I guess I just hit the nail too hard or something. Anyway, steady pressure on a sharp object is how the cart gets punctured in the gun, and I've found it's the best way. Oh well. To each his own...
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~Zero the Inestimable
The A Files
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Anthony
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posted December 16, 2000 07:59 PM
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Oh yeah, I've also drilled them and shot the top with a pistol crossbow.
BoB-
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posted December 17, 2000 04:01 AM
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A while ago, after my BB gun died, I had a new box of 25 Co2 cartridges with no purpose in there life.
Remembering our Co2 dragsters from science class I figured I could make the Cart themselves projectiles,
I simply glued a 3/4" endcap with a sharpened screw bolted through it, onto a approximate 6 or 7' length of 3/4" PVC.
I just leaned the pipe up against a saw horse at my buddy's house and dropped 'um in,
they acheived pretty good altitudes, but aiming was a joke, I was almsot hit by a few of them.
nbk2000
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From: Guess
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posted December 18, 2000 11:53 AM
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Hmmm.. what if you dropped a full powerlet into a 2 liter bottle full of acid? Would not the acid eat away at the powerlet until it ruptured and the pressure exploded the bottle spraying acid everywhere? And being a steel containter it would take a while for the acid to eat through.
The only rub I'd see would be if enough gas was produced by the acid eating the steel to cause a minor rupture of the bottle before the powerlet had been penetrated.
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"The knowledge that they fear is a weapon to be used against them"
Go here to download the NBK2000 website PDF.
Anthony
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posted December 18, 2000 06:38 PM
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Interesting idea, you might have to sand the cansiter if it is painted/laqueered or otherwise protected from rust. The gas produced by the HCl could well rupture the bottle, I suppose a pinhole in the lid would fix that problem?
PYRO500
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posted December 18, 2000 06:49 PM
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why use hcl? use h2so4 it is more powerful against steel (I think)
Energy84
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posted December 18, 2000 07:42 PM
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Hey, wouldn't a CO2 cartridge inside a ball of thermite make an interesting mix? Once the cartridge ruptures/explodes, chunks of burning thermite would be thrown all over the place. I'm not sure if this would work though... I haven't had the opportunity to play with thermite yet.
BTW, does anyone have any ideas for something else to use instead of the crushed sparkler powder? would simple smokeless gunpowder work? (I've got about 2 pounds of it )
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why oh why didn't I take the blue pill?
Zero
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posted December 18, 2000 08:49 PM
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I think the smokeless would burn too fast to heat the cartridge into rupturing. If you enclose it, it might flat out blow the cartridge up.
Smokeless inside an empty cartridge with a fuse inserted does wonders, however...
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~Zero the Inestimable
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SafetyLast
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posted December 19, 2000 04:10 PM
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You could take SrNO3 (strontium nitrate) out of a handheld marine flare or road flare
(available at most automotive stores or boating stores) you would need to put the powder in the aluminum foil and put a little bit of FFG where the fuse is.
you could use a sparkler if you wanted a longer delay, but those are hard to find in my town unless its July. 5 grams of strontium nitrate will burn with an intensely hot/bright light for about 12-15 seconds.
Magnesium ribbon might work if you wrapped a 1' length around a CO2 cart about 10 times. theheat from the ribbon alone may be enough to cause the gasses inside the cart to expand to the bursting pressure
I have seen butane bulbs that look exactly like the CO2 ones but have butane in them
they are for these mini welding torches I've got to think of a way to ignite the butane gas.
I could put it on some hot coals and have a circle of napalm around the coals, or I could use my .22 and shoot it from 20 yards with a tracer (would this work?)
[This message has been edited by SafetyLast (edited December 19, 2000).]
Zero
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posted December 19, 2000 06:30 PM
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Yes, Radio Shack sells butane cartridges that look like CO2 carts. They have narrower necks, which is supposed to keep you from using them in a pellet gun. Oddly enough, the walls of the cartridge are actually thinner than a CO2. I've tried to burst them but all I've succeded in doing is making a giant flame out the end. They're expensive, so I don't get to play with them much.
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~Zero the Inestimable
The A Files
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BoB-
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posted December 20, 2000 05:30 AM
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I use to play with those Butane carts,
I think butane turns to liquid at a lower pressure, which is why there so thin.
Anthony
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posted December 20, 2000 05:38 PM
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*much* lower pressure. Why bother with tiny expensive butane canisters when 500ml butane/propane are so cheap?
Energy84
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posted December 20, 2000 10:14 PM
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okay, I've got about a foot and a half of Mg ribbon. how do I ignite it? will a simple match do it or does it take more than that?
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why oh why didn't I take the blue pill?
Cricket
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posted December 20, 2000 11:01 PM
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I dont think a match will be enough, unless you make the buring head touch the ribbon, maybe. I think you should use some Potassium/Sodium Chlorate/Perchlorate mix ( I think they burn hot enough). If you dont got this stuff, just use a flare. I would break or cut the flare (no point in using a whole flare for one light). Its hard to light with a lighter, so break off about half the black stuff on the top of the flare and save it for the other piece.
sadsakjoel
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posted December 21, 2000 12:41 AM
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me and a friend made some 'napalm' and put a few co2 in it, i saw it coming but we did it anyway, the first one blew and the rest went flying with burning napalm. but I was going to make a mortar that shoots a coke can full of napalm and maybe sparkler shit with a cO2.
But napalm is the way to go if you can't get sparklers, it just takes fucken ages.
MacCleod
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posted December 21, 2000 01:35 AM
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Hey,Energy84...Try a peizo-electric micro-jet lighter (like the Crack smokers use).These burn about 10 times hotter than a reg. lighter,should do the trick nicely.
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"There can be only one!"
ALENGOSVIG1
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posted December 21, 2000 01:47 AM
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i used play to with butane...i put it into big ballons to make some nice fireballs
[This message has been edited by ALENGOSVIG1 (edited December 21, 2000).]
Mick
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posted December 21, 2000 11:49 AM
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you can use a lighter to light magnesium, you'll be there for a little while...but it will light..
the easiest way is to use one of those mini blow torch things...or just use a blow torch...
and while where on the subject of blowing cylinder type objects up...
blow torch cylinders(the LPG kind you get here in OZ) go off like nothing else you have ever seen...
but er...don't be standing within 100 metres of it tho...and bring some ear muffs...
and of course...if you REALLY want trouble, set off a 20kg BBQ cylinder. - it'll launch a 2 story ladder over 20 blocks...
thats true too, a few months(a year?) there was a story on the news about a guy in sydney, and he was sitting in his van, and he lit up a smoke..and BOOM!...somehow he didn't smell the LPG from the leaking BBQ cylinder in his van..
shattered windows for 4 blocks or something...and blew the ladder on his roof something like 20 blocks....thats a mighty big bang.
as for setting off Co2 blubs, simply tape 4 sparklers to the side of a blub, and light them with a mini blow torch thing
i reckon creater makers are the best fun tho... cause there small, there loud... and there stable... none of this "you must wear safety gear" crap... and no chemicals that could explode if you fart in the wrong direction....
...hmm me thinks i might go make a few...
[edit]
good thinking there nbk, but, why try to eat thru the metal, when you could eat thru the lead cap?
it would be a lot quicker, and you could dialute the acid depending on how quick you want it to eat thru...
but what acid eats leads?
[This message has been edited by Mick (edited December 21, 2000).]
nbk2000
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From: Guess
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posted December 21, 2000 02:42 PM
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Obviously, since the whole powerlet will be immersed in acid, the acid will eat through the weakest spot.
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Anthony
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posted December 22, 2000 07:17 PM
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The problem with a flamable gas bottle is that it won't explode, they have a pressure release valve that vents the bottle when the pressure gets too high. What you want is a big CO2 cylinder, *much* higher pressure and some not have release valves. Ones intended to be used in the home have a burst valve, others don't. Try a 1kg welding cylinder, they're cheap and strong or steal a 3ft or 4ft tall one from a pub - Very big bag! (saw one go off on TV, they put it on a gas barbeque).
As for flammable gas leaks, a house in a street where a friend of mine lives blew up. The owner was a builder and left a propane tank in the garage over night. It leaked and the there was a pilot light for the central heating boiler in the garage, except the gas didn't ignite because there was not enough oxygen (must have leaked realquick!). Anyway, the guy went to get his car out ofthe garage in the morning, lift the garage door, oxygen rushed in, BOOM! He got thrown back but was sheilded by the door that went with him. I had a look at the house and it was comletely destroyed, the only room that (kinda) stood was a glood floor room furthest away from the garage and I spotted the car under the rubble, it was about a foot tall!
Cricket
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posted December 22, 2000 07:31 PM
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My brother knew a guy that he played the bass with. His dad left a gas can open in the garage and it vaporised and oxidized. The next morning he turned on his amp and it blowed the walls back about 2". I cant think how he felt (he said his ears rand for 2 months).
Lost
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posted December 22, 2000 09:06 PM
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If it already oxidized (combined with oxygen)... It shouldn't still ignite, as the process would have already happened...
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-Lost
<a href="http://www.noneinc.org" target="_blank">http://www.noneinc.org</a>
Cricket
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posted December 22, 2000 09:25 PM
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I ment to be mixed with Oxygen, not to be Oxidezed on the molecular level.
sadsakjoel
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posted December 28, 2000 10:23 PM
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For a while now ive been meaning to make a big Co2 bomb with sparklers and one of those big soda stream Co2's, I think they weigh about 1 kilo and there $20Aus from K mart.
Energy84
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From: Earth
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posted December 28, 2000 10:47 PM
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Instead of using sparklers on a big canister like that, use KNO3+Sucrose. It'll probably heat a big container like that faster than powdered sparklers. I find that the KNO3+SC mix gives a louder bang than sparkler powder. It's probably because it heats it faster and bursts at a higher pressure. Oh, you can still use a sparkler for a fuse though. It burns hot enough to ignite the mix pretty fast
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why oh why didn't I take the blue pill?
Anthony
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From: England
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posted December 29, 2000 03:09 PM
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Soda Stream bottles won't explode.
green beret
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posted December 30, 2000 07:09 AM
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Anthony how come big soda stream bottles wont explode? Why are they any different to the smaller C02 carts?(the ones I get are called sparklets). I think that a big C02 (soda stream) would explode no worries as long as you heated it with the right stuff eg. Kno3+sugar. Dont worry bud, I'm not having a go at you, it's just that I disagree.
Anthony
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posted December 30, 2000 09:18 AM
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Because they're intended to be kept in the home (kitchen) they're designed to be safe in a fire. They have a burst valve in the side ofthe brass connector which vents the bottle iif the internal pressure becomes to high. You could remove it and screw a bolt in but you wouls have to re-fill the bottle yourself.
If you want to do a big CO2 bomb I'd recommend those disposable CO2 welding gas bottles, they have no safty valves, are bigger and cost about half the price.
Anthony
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From: England
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posted December 30, 2000 10:26 AM
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<img src="http://www.geocities.com/spudguns_uk/co2bottle.jpg" alt=" - " /> (Just fixed up the UBB so it shows the picture. NBK2000)
[This message has been edited by nbk2000 (edited February 13, 2001).]
green beret
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From: Australia
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posted January 01, 2001 05:48 AM
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Holy shit, thats what I call a Co2 cannister. Thanks man, I get it now.
Mr Cool
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posted January 02, 2001 09:36 AM
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Hey there,
I haven't read all the posts here because I'm very lazy, but I just thought I'd clear up that thing about CO2's physical states in case someone else hasn't already done so.
If you have a canister of CO2 under pressure, it will be a liquid inside e.g. in those little CO2 canisters for air pistols. If you quickly release the pressure, it boils away and this takes away heat. The temperature drops enough to freeze the CO2 (-78.5 C I think). This is dry ice. If you leave this outside, it sublimes (solid to gas), but if you put it in a sealed container, pressure builds up so it doesn't sublime as fast. Therefore, it doesn't lose heat as quickly, and it can heat up enough to melt, forming liquid CO2.
The mist that comes out of CO2 air pistols during firing is just that - mist. It is caused by the drop in temperature when the pressure is released, and it is formed because the air contains water vapour. When the air is cooled, it becomes super-saturated with water, so it is forced to condense into tiny water droplets, forming mist. If you shoot an air pistol in very dry air no mist is formed.
deathdude
A new voice
Posts: 28
From: ambrige,PA,USA
Registered: FEB 2001
posted February 13, 2001 01:12 PM
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go to radio shack or so they sell small 6gram containser of iso-butane with a valve heat this it will explode good
(Thanks for this excellent tip. I suggest you go back to lurking. -J)
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posted December 14, 2000 10:48 PM
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all this talk about CO2 bombs using sparkler dust as an initiation device has got me thinking. i personally cannot get sparklers where i am from. i do not know why but... what about positioning a CO2 cartridge directly over the flame of a sterno can? i know these things burn for a long time, and they produce alot of heat. a typical can of sterno burn anywhere from 100 degrees to 160 degrees (F).
<a href="http://www.sterno.com/Sterno_index.html" target="_blank">http://www.sterno.com/Sterno_index.html</a>
does anyone know how long, at like 130 degrees (F), a full CO2 cartridge would take to explode? i know Mg burns at like 5000 degrees (F)
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...Æ
[This message has been edited by CragHack (edited December 14, 2000).]
[This message has been edited by CragHack (edited December 14, 2000).]
Cricket
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posted December 15, 2000 01:56 AM
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I dont know, but I think the lid in the canister (CO2)is make of lead. If you didnt know, lead (Pb)has a very low melting piont for a metal. You can easily melt some of it on your stove in a couple minutes. So the lid would probly go, and might make it like a rocket if pointed right.
Anthony
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From: England
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posted December 15, 2000 03:41 PM
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The tops of CO2 cartridges (the bit that gets punctured) are steel and I believet hey are crimped on.
I wouldb't be surprised if slow heating (like from the sterno) would just blow of the top as it is an obvious weak point.
CragHack
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From:
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posted December 15, 2000 03:50 PM
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well you could invert the CO2 powerlet and make it so the flame acts on the bottom (the no crimped part) of the CO2 thing.
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...Æ
Stone
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posted December 15, 2000 06:26 PM
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Placing it over a candle even works... just heat the side or the bottom and it should go within 30 secs.
Zero
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From: ...
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posted December 15, 2000 07:08 PM
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The top blows and it makes a nifty woosh and a cloud of white liquid CO2. Chances are the CO2 will put out your Stern-o, too. If you want to see a cartridge explode, leave one on the railroad tracks...
The best use, of course, is to make a cratermaker out of it (after you use it in your gun to shoot squirrels).
~Zero the Inestimable
aussie_kid
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From: Australia
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posted December 15, 2000 11:05 PM
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Yeah just a minor point...
Liquid CO2 cannot exist. CO2 goes straight from a gas to a solid, or from a solid to a gas.
Stone
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From:
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posted December 15, 2000 11:23 PM
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The CO2 bulbs in Australia only have a thin cover that is meant to be pierced, but it never breaks when it is heated.
Zero
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From: ...
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posted December 15, 2000 11:25 PM
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Last I checked, the CO2 in a cartridge is under enough pressure to make it go into a liquid state. It stays liquid for a spit second (especially in colder weather) after it comes out of the cart, thus the white "smoke" that comes out of the barrel of the gun. I don't think that's solid CO2... Decompressing something and having it turn into a solid doesn't make physical sense.
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~Zero the Inestimable
The A Files
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PYRO500
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Posts: 1474
From: somewhere in florida
Registered: SEP 2000
posted December 15, 2000 11:34 PM
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he is probably confused, first it is true that co2 can only stay in the solid and gas state, only in room pressure (around 4 bar) but the co2 gas is compressed into the co2 cartrage, so it gives alot of heat off and compresses to a liquid like state, co2 forms a semi liquid like state at below a certan temp and will eventualy form a liquid but it cant form a solid at those temps, (except absolute zero) but when it gets released from the tank it comes out as a liquid with a low boiling temp and boild instantly giving that colling effect, witch can also freeze itself and "blow snow" ask any paintball player to hold their gun upside down and fire it (as long as they use co2) that can fuck up o rings too. hope I've been of some help
BoB-
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From:
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posted December 16, 2000 02:17 AM
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I always assumed that the depressurization of the gas causes a dramatic reduction in temerature, and because the Co2 is now colder than the air around it, it becomes visible, errr, somethin like that.
Anyways, I could have sworn I saw something about these 'bombs' in the Pyro Diary.
DarkAngel
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From: ?
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posted December 16, 2000 05:35 AM
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So if i wanna make a Crater Maker and i have no paintball gun or a mixer,Is it safe to open it?
--==DarkAngel==--
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Go to Section1 <a href="http://www.section1.f2s.com" target="_blank">http://www.section1.f2s.com</a> Alot off Bombs/Explosives and Homemade Weapons!!
Cricket
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From: USA
Registered: OCT 2000
posted December 16, 2000 07:45 AM
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Just open it with a nail. Just tap it and it with a hammer and it will start to so ssssss, then leave it for about 1 minute or so.
[This message has been edited by Cricket (edited December 16, 2000).]
Zero
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From: ...
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posted December 16, 2000 10:16 AM
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No, DO NOT open it by hitting it with a nail. The safest way, without a gun, is to secure a nail to one side of a vise, grip the cartridge in the vise with the tip on the nail, and slowly tighten the vise until the nail punctures the tip. If you hit it with a hammer, two bad things could happen:
The cart could release all its pressure and fly away at high speeds, very disasterous indoors, not to mention if it hits you in the face.
The nail could get shot out of the end of the cartridge from the pressure, after you take the hammer off. to use an age old expression, you'll poke your eye out.
With the vise, as long as the cartrige is held in securely, is far safer. Anyway, once the cart is punctured, slowly losen the vise, and all the CO2 will hiss out, making another one of those nifty white clouds. Congrats, you just wasted a C02 cartrige.
Cratermaker info can be found anywhere (including the link in my signature, below) so I won't go into posting that.
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~Zero the Inestimable
The A Files
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PYRO500
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From: somewhere in florida
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posted December 16, 2000 03:03 PM
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uh, they arent that powerful, you can easily hold a thumbtack in ine with 1 fin ger, and they do not "rocket off" the only way you can make one fly is by sticking one end in your pellet gun and firing it with a pellet and it wil go five or six feet up with a little aid from the co2 cart, and if you heat the co2 carts (never a good idea) the liquid co2 inside starts expanding til it bursts the bottom off!
Cricket
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From: USA
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posted December 16, 2000 03:29 PM
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I have opened about a box (25 I believe) of these and never had one go carzy. I just tap it once, usually, and it slowly starts to go pppsssssssssssssssss(for about a minute or two). Just thought of this, dont open a whole box on your room. You might end up like Pyro 500 did that one time when his Paintball CO2 can broke. And I think the lid on the can is not lead. I remember drilling one and having to pull it off with pliers, not easy. I thought I read in a magazine that "they are lead sealed for your protection". And the nail never goes in, just enough to bearly poke a pin sized hole in it.
Anthony
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From: England
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posted December 16, 2000 06:23 PM
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I've never had a problem punturing them by hand with a nail, if you're that scared, hold the nail in a pair of pliers and it it at arms length so you keep your head well away. That's what I do with ammunition.
I used the tip of a dart once and made a pin hole sized hole, the cartridge leaked for over 45 minutes! If you don't want to completely wastet he cartridge, make a small hole in it and drop it into a bottle and screw the cap on - pressure bottle bomb.
The reason it is so easy to hold a tack into the punctured cartridge is beacue oft he tiny surface area of the tack tip that the gas has to push against. If the tack tiop had a surface area of 1 square inch, it would require roughly 750 pounds of force to hold it in. But it doesn't it has a surface area of about 1/2mm so the force acting on it is tiny.
Maddoc
Moderator
Posts: 536
From: Dizneland
Registered: SEP 2000
posted December 16, 2000 07:45 PM
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My method is to simply drill through the top with the appropraite size bit for my fuse.
I drill slowly until the hissing noise is heard, the when the hissing stops drill the rest of the way through.
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Whoa, where my fingers?
Zero
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From: ...
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posted December 16, 2000 07:49 PM
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I found that out the hard way once, back when I was even dumber than I am now. I guess I just hit the nail too hard or something. Anyway, steady pressure on a sharp object is how the cart gets punctured in the gun, and I've found it's the best way. Oh well. To each his own...
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~Zero the Inestimable
The A Files
{Link is a direct download.}
Anthony
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Posts: 2312
From: England
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posted December 16, 2000 07:59 PM
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Oh yeah, I've also drilled them and shot the top with a pistol crossbow.
BoB-
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From:
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posted December 17, 2000 04:01 AM
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A while ago, after my BB gun died, I had a new box of 25 Co2 cartridges with no purpose in there life.
Remembering our Co2 dragsters from science class I figured I could make the Cart themselves projectiles,
I simply glued a 3/4" endcap with a sharpened screw bolted through it, onto a approximate 6 or 7' length of 3/4" PVC.
I just leaned the pipe up against a saw horse at my buddy's house and dropped 'um in,
they acheived pretty good altitudes, but aiming was a joke, I was almsot hit by a few of them.
nbk2000
Moderator
Posts: 1103
From: Guess
Registered: SEP 2000
posted December 18, 2000 11:53 AM
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Hmmm.. what if you dropped a full powerlet into a 2 liter bottle full of acid? Would not the acid eat away at the powerlet until it ruptured and the pressure exploded the bottle spraying acid everywhere? And being a steel containter it would take a while for the acid to eat through.
The only rub I'd see would be if enough gas was produced by the acid eating the steel to cause a minor rupture of the bottle before the powerlet had been penetrated.
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"The knowledge that they fear is a weapon to be used against them"
Go here to download the NBK2000 website PDF.
Anthony
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From: England
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posted December 18, 2000 06:38 PM
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Interesting idea, you might have to sand the cansiter if it is painted/laqueered or otherwise protected from rust. The gas produced by the HCl could well rupture the bottle, I suppose a pinhole in the lid would fix that problem?
PYRO500
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From: somewhere in florida
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posted December 18, 2000 06:49 PM
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why use hcl? use h2so4 it is more powerful against steel (I think)
Energy84
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From: Earth
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posted December 18, 2000 07:42 PM
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Hey, wouldn't a CO2 cartridge inside a ball of thermite make an interesting mix? Once the cartridge ruptures/explodes, chunks of burning thermite would be thrown all over the place. I'm not sure if this would work though... I haven't had the opportunity to play with thermite yet.
BTW, does anyone have any ideas for something else to use instead of the crushed sparkler powder? would simple smokeless gunpowder work? (I've got about 2 pounds of it )
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why oh why didn't I take the blue pill?
Zero
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From: ...
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posted December 18, 2000 08:49 PM
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I think the smokeless would burn too fast to heat the cartridge into rupturing. If you enclose it, it might flat out blow the cartridge up.
Smokeless inside an empty cartridge with a fuse inserted does wonders, however...
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~Zero the Inestimable
The A Files
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SafetyLast
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From: the cretaceous period
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posted December 19, 2000 04:10 PM
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You could take SrNO3 (strontium nitrate) out of a handheld marine flare or road flare
(available at most automotive stores or boating stores) you would need to put the powder in the aluminum foil and put a little bit of FFG where the fuse is.
you could use a sparkler if you wanted a longer delay, but those are hard to find in my town unless its July. 5 grams of strontium nitrate will burn with an intensely hot/bright light for about 12-15 seconds.
Magnesium ribbon might work if you wrapped a 1' length around a CO2 cart about 10 times. theheat from the ribbon alone may be enough to cause the gasses inside the cart to expand to the bursting pressure
I have seen butane bulbs that look exactly like the CO2 ones but have butane in them
they are for these mini welding torches I've got to think of a way to ignite the butane gas.
I could put it on some hot coals and have a circle of napalm around the coals, or I could use my .22 and shoot it from 20 yards with a tracer (would this work?)
[This message has been edited by SafetyLast (edited December 19, 2000).]
Zero
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From: ...
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posted December 19, 2000 06:30 PM
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Yes, Radio Shack sells butane cartridges that look like CO2 carts. They have narrower necks, which is supposed to keep you from using them in a pellet gun. Oddly enough, the walls of the cartridge are actually thinner than a CO2. I've tried to burst them but all I've succeded in doing is making a giant flame out the end. They're expensive, so I don't get to play with them much.
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~Zero the Inestimable
The A Files
{Link is a direct download.}
BoB-
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From:
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posted December 20, 2000 05:30 AM
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I use to play with those Butane carts,
I think butane turns to liquid at a lower pressure, which is why there so thin.
Anthony
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From: England
Registered: SEP 2000
posted December 20, 2000 05:38 PM
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*much* lower pressure. Why bother with tiny expensive butane canisters when 500ml butane/propane are so cheap?
Energy84
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From: Earth
Registered: OCT 2000
posted December 20, 2000 10:14 PM
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okay, I've got about a foot and a half of Mg ribbon. how do I ignite it? will a simple match do it or does it take more than that?
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why oh why didn't I take the blue pill?
Cricket
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From: USA
Registered: OCT 2000
posted December 20, 2000 11:01 PM
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I dont think a match will be enough, unless you make the buring head touch the ribbon, maybe. I think you should use some Potassium/Sodium Chlorate/Perchlorate mix ( I think they burn hot enough). If you dont got this stuff, just use a flare. I would break or cut the flare (no point in using a whole flare for one light). Its hard to light with a lighter, so break off about half the black stuff on the top of the flare and save it for the other piece.
sadsakjoel
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From:
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posted December 21, 2000 12:41 AM
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me and a friend made some 'napalm' and put a few co2 in it, i saw it coming but we did it anyway, the first one blew and the rest went flying with burning napalm. but I was going to make a mortar that shoots a coke can full of napalm and maybe sparkler shit with a cO2.
But napalm is the way to go if you can't get sparklers, it just takes fucken ages.
MacCleod
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Posts: 215
From:
Registered: DEC 2000
posted December 21, 2000 01:35 AM
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Hey,Energy84...Try a peizo-electric micro-jet lighter (like the Crack smokers use).These burn about 10 times hotter than a reg. lighter,should do the trick nicely.
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"There can be only one!"
ALENGOSVIG1
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Posts: 766
From: Vancouver, Canada
Registered: NOV 2000
posted December 21, 2000 01:47 AM
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i used play to with butane...i put it into big ballons to make some nice fireballs
[This message has been edited by ALENGOSVIG1 (edited December 21, 2000).]
Mick
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From:
Registered: OCT 2000
posted December 21, 2000 11:49 AM
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you can use a lighter to light magnesium, you'll be there for a little while...but it will light..
the easiest way is to use one of those mini blow torch things...or just use a blow torch...
and while where on the subject of blowing cylinder type objects up...
blow torch cylinders(the LPG kind you get here in OZ) go off like nothing else you have ever seen...
but er...don't be standing within 100 metres of it tho...and bring some ear muffs...
and of course...if you REALLY want trouble, set off a 20kg BBQ cylinder. - it'll launch a 2 story ladder over 20 blocks...
thats true too, a few months(a year?) there was a story on the news about a guy in sydney, and he was sitting in his van, and he lit up a smoke..and BOOM!...somehow he didn't smell the LPG from the leaking BBQ cylinder in his van..
shattered windows for 4 blocks or something...and blew the ladder on his roof something like 20 blocks....thats a mighty big bang.
as for setting off Co2 blubs, simply tape 4 sparklers to the side of a blub, and light them with a mini blow torch thing
i reckon creater makers are the best fun tho... cause there small, there loud... and there stable... none of this "you must wear safety gear" crap... and no chemicals that could explode if you fart in the wrong direction....
...hmm me thinks i might go make a few...
[edit]
good thinking there nbk, but, why try to eat thru the metal, when you could eat thru the lead cap?
it would be a lot quicker, and you could dialute the acid depending on how quick you want it to eat thru...
but what acid eats leads?
[This message has been edited by Mick (edited December 21, 2000).]
nbk2000
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Posts: 1103
From: Guess
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posted December 21, 2000 02:42 PM
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Obviously, since the whole powerlet will be immersed in acid, the acid will eat through the weakest spot.
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Go here to download the NBK2000 website PDF.
Anthony
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From: England
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posted December 22, 2000 07:17 PM
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The problem with a flamable gas bottle is that it won't explode, they have a pressure release valve that vents the bottle when the pressure gets too high. What you want is a big CO2 cylinder, *much* higher pressure and some not have release valves. Ones intended to be used in the home have a burst valve, others don't. Try a 1kg welding cylinder, they're cheap and strong or steal a 3ft or 4ft tall one from a pub - Very big bag! (saw one go off on TV, they put it on a gas barbeque).
As for flammable gas leaks, a house in a street where a friend of mine lives blew up. The owner was a builder and left a propane tank in the garage over night. It leaked and the there was a pilot light for the central heating boiler in the garage, except the gas didn't ignite because there was not enough oxygen (must have leaked realquick!). Anyway, the guy went to get his car out ofthe garage in the morning, lift the garage door, oxygen rushed in, BOOM! He got thrown back but was sheilded by the door that went with him. I had a look at the house and it was comletely destroyed, the only room that (kinda) stood was a glood floor room furthest away from the garage and I spotted the car under the rubble, it was about a foot tall!
Cricket
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From: USA
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posted December 22, 2000 07:31 PM
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My brother knew a guy that he played the bass with. His dad left a gas can open in the garage and it vaporised and oxidized. The next morning he turned on his amp and it blowed the walls back about 2". I cant think how he felt (he said his ears rand for 2 months).
Lost
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From:
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posted December 22, 2000 09:06 PM
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If it already oxidized (combined with oxygen)... It shouldn't still ignite, as the process would have already happened...
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-Lost
<a href="http://www.noneinc.org" target="_blank">http://www.noneinc.org</a>
Cricket
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From: USA
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posted December 22, 2000 09:25 PM
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I ment to be mixed with Oxygen, not to be Oxidezed on the molecular level.
sadsakjoel
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From:
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posted December 28, 2000 10:23 PM
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For a while now ive been meaning to make a big Co2 bomb with sparklers and one of those big soda stream Co2's, I think they weigh about 1 kilo and there $20Aus from K mart.
Energy84
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From: Earth
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posted December 28, 2000 10:47 PM
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Instead of using sparklers on a big canister like that, use KNO3+Sucrose. It'll probably heat a big container like that faster than powdered sparklers. I find that the KNO3+SC mix gives a louder bang than sparkler powder. It's probably because it heats it faster and bursts at a higher pressure. Oh, you can still use a sparkler for a fuse though. It burns hot enough to ignite the mix pretty fast
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why oh why didn't I take the blue pill?
Anthony
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From: England
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posted December 29, 2000 03:09 PM
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Soda Stream bottles won't explode.
green beret
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From: Australia
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posted December 30, 2000 07:09 AM
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Anthony how come big soda stream bottles wont explode? Why are they any different to the smaller C02 carts?(the ones I get are called sparklets). I think that a big C02 (soda stream) would explode no worries as long as you heated it with the right stuff eg. Kno3+sugar. Dont worry bud, I'm not having a go at you, it's just that I disagree.
Anthony
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From: England
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posted December 30, 2000 09:18 AM
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Because they're intended to be kept in the home (kitchen) they're designed to be safe in a fire. They have a burst valve in the side ofthe brass connector which vents the bottle iif the internal pressure becomes to high. You could remove it and screw a bolt in but you wouls have to re-fill the bottle yourself.
If you want to do a big CO2 bomb I'd recommend those disposable CO2 welding gas bottles, they have no safty valves, are bigger and cost about half the price.
Anthony
Moderator
Posts: 2312
From: England
Registered: SEP 2000
posted December 30, 2000 10:26 AM
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<img src="http://www.geocities.com/spudguns_uk/co2bottle.jpg" alt=" - " /> (Just fixed up the UBB so it shows the picture. NBK2000)
[This message has been edited by nbk2000 (edited February 13, 2001).]
green beret
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From: Australia
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posted January 01, 2001 05:48 AM
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Holy shit, thats what I call a Co2 cannister. Thanks man, I get it now.
Mr Cool
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From: None of your bloody business!
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posted January 02, 2001 09:36 AM
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Hey there,
I haven't read all the posts here because I'm very lazy, but I just thought I'd clear up that thing about CO2's physical states in case someone else hasn't already done so.
If you have a canister of CO2 under pressure, it will be a liquid inside e.g. in those little CO2 canisters for air pistols. If you quickly release the pressure, it boils away and this takes away heat. The temperature drops enough to freeze the CO2 (-78.5 C I think). This is dry ice. If you leave this outside, it sublimes (solid to gas), but if you put it in a sealed container, pressure builds up so it doesn't sublime as fast. Therefore, it doesn't lose heat as quickly, and it can heat up enough to melt, forming liquid CO2.
The mist that comes out of CO2 air pistols during firing is just that - mist. It is caused by the drop in temperature when the pressure is released, and it is formed because the air contains water vapour. When the air is cooled, it becomes super-saturated with water, so it is forced to condense into tiny water droplets, forming mist. If you shoot an air pistol in very dry air no mist is formed.
deathdude
A new voice
Posts: 28
From: ambrige,PA,USA
Registered: FEB 2001
posted February 13, 2001 01:12 PM
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go to radio shack or so they sell small 6gram containser of iso-butane with a valve heat this it will explode good
(Thanks for this excellent tip. I suggest you go back to lurking. -J)