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How To Make a Smoke Bomb

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Unread postAuthor: SpudBlaster15 » Fri Mar 28, 2008 2:31 am

Lentamentalisk wrote:btw, where would I get large mesh KNO<sub>3</sub>? any suggestions of garden supplies etc. that would have that?


If you can find stump remover, it is probably the easiest option. However, in Canada where I live, KNO<sub>3</sub> containing stump remover has been banned, and KNO<sub>3</sub> is a pretty stringently regulated chemical here these days. I managed to obtain a few 500 gram containers of stump remover for $12 each from the local True-Ripoff hardware store a couple years ago, but according to the owners, that was the last of the stock they will ever have. My friends and I obtained endless hours of entertainment from those containers, with both the smoke bombs and the black powder that we (I) made using the potassium nitrate.

If you live in the USA, it might still be on hardware store shelves.

Alternatively, it is used frequently as a dry fertilizer in planted tank aquariums and hydroponics, so almost any hydroponics supply store in both the USA and Canada will have it for a fraction of the price of stump remover. A store known as "Atlantis Hydroponics", based in the USA, sold 50lb bags of pure potassium nitrate for $20 back in 2004, but I'm not sure if they still do. Common hydroponics prices for small quantities will be around $2-$4/lb.

Hydroponic and stump remover KNO<sub>3</sub> generally is not technical grade (>99% purity), but it is damn close, generally around 98-99% pure, which is more than adequate for any pyrotechnic use.
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Unread postAuthor: BBMG01 » Fri Mar 28, 2008 12:02 pm

I made a bunch of these for paintballing and brought them to my friend at school, I got caught and expelled. I had The fire Marshal and cops at my house :lol:
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Unread postAuthor: elitesniper » Fri Mar 28, 2008 12:05 pm

And your proud of that? :?
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Unread postAuthor: MaxuS the 2nd » Fri Mar 28, 2008 3:27 pm

Lamentalisk: It was 320g of large mesh KNO3 and caster sugar melted together for a better bond. If you live in the Uk, I can tell you exactly where to get the stuff for long lasting, large volumes of smoke producing KNO3. But I have no idea for the rest of the world.
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Unread postAuthor: mammoth1 » Mon Mar 31, 2008 6:04 pm

uh i feel stupid asking but how do u ignite it?
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Unread postAuthor: Counterstriker » Mon Mar 31, 2008 6:14 pm

mammoth1 wrote:uh i feel stupid asking but how do u ignite it?


You can buy visco fuse off Cannonfuse.com, or you can just put a lighter on it, it will catch.
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Unread postAuthor: rcman50166 » Mon Mar 31, 2008 6:22 pm

Potassium Nitrate (saltpeter) is hard to get no matter where you live because it is the base in a lot of the things that go boom. My only alternative to this is using powdered zinc and sulfer. 75% zinc and 25% sulfer by volume make a mean rocket fuel but if you increase the percentage sulfer to, say, 50% then it should smoke more as it won't burn agressively but smolder more.
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Unread postAuthor: SpudBlaster15 » Mon Mar 31, 2008 10:29 pm

rcman50166 wrote:Potassium Nitrate (saltpeter) is hard to get no matter where you live because it is the base in a lot of the things that go boom.


This guy sells Potassium Nitrate for $2 per pound, and will ship to anywhere in the USA for $5. He will also ship internationally for $10-12. It is certainly not hard to find if you look hard enough.

I know of at least 4 places in Canada that sell KNO<sub>3</sub> for less than $4/lb plus shipping. One location will sell you a 55lb bag for $50, but you better live near them if you want it, because the shipping cost is massive.

If you live in a decent sized city, you might have some luck searching Google for "(Your city name) hydroponics". If you find a supplier, send them an e-mail or phone call to see if they stock it. Chances are they will, and the product will be essentially indistinguishable from pyrotechnic (technical grade) KNO<sub>3</sub>.
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Unread postAuthor: ammosmoke » Tue Apr 01, 2008 12:52 am

Wow! Great find. I just might have to try it now. 8)
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Unread postAuthor: Counterstriker » Tue Apr 01, 2008 8:52 pm

Spectracide Brand Stump Remover is 100% it's on there pdf.
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Unread postAuthor: itsnotmyblood » Fri Jun 18, 2010 11:36 pm

how do you lite it
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Unread postAuthor: Crna Legija » Sat Jun 19, 2010 12:21 am

Counterstriker wrote:
mammoth1 wrote:uh i feel stupid asking but how do u ignite it?


You can buy visco fuse off Cannonfuse.com, or you can just put a lighter on it, it will catch.



read the topic
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Unread postAuthor: inonickname » Sat Jun 19, 2010 12:51 am

I also have a question. How is this not locked?
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Unread postAuthor: Lockednloaded » Sat Jun 19, 2010 1:08 am

the moderators have deemed smoke bombs as safe and OK to shoot out of cannons, but all the other stuff pertaining to gunpowder probably needs to stop
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Unread postAuthor: inonickname » Sat Jun 19, 2010 4:16 am

I believe smoke bombs, if not falling under other rules, would be incendiary projectiles when fired from cannons.
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