Hey peeps. THis is totally random, but im bored so why not For a nice simple smokebomb, all you need is: 60% Potassium Nitrate (KN03 aka Saltpetre) 40% Sugar Melt them together VERY slowly on medium - low heat in a saucepan or glass beaker on the hob, until it gets to a sticky brown mixture, like tofee (smells like toffee too, but dont eat it however tempting it is ha ha). When its in this sticky mixture, using 2 spoons, scoop it out and scrape it into either: 1) Your moulds of carboard or paper or foil ( if you care about how it looks ) 2) Just any old surface that you dont find getting dirty, like and old plater or just a slab of concrete ( a knock with a hammer will get it off ) Then, just before it sets, stick about 8 - 10cm of visco fuse into it, and wait for it to set! They are still quite sticky even when set if youve put it a bit to much sugar in, so i wrap some cling film round the edges, then its perfect! Great for paintballing, thats what i use them for. Just passing on the mischievous wisdom p.s You can get visco fuse from here if your a uk user: http://www.ukvisco.com Have fun
Smoke bomb recipes Haven't checked them all, but top one is about the same as billybob's. Also, use at your own risk, as some chemicals listed will be extremely volatile when mixed, and can leave some very nasty burns.
So Just What is Potassium Nitrate aka Salt Peter? The chemical compound potassium nitrate is a naturally occurring mineral source of nitrogen. It is a nitrate with chemical formula KNO3. Its common names include saltpetre (from Medieval Latin sal petrae: "stone salt" or possibly "salt of Petra"), American English saltpeter, Chilean saltpetre, Nitrate of potash and nitre. The name saltpeter is also applied to sodium nitrate. It is the oxidising (oxygen-supplying) component of gunpowder. Prior to the large-scale industrial fixation of nitrogen (the Haber process), a major source of Potassium nitrate was the deposits crystallising from cave walls or the drainings of decomposing organic material. Dung-heaps were a particularly common source: ammonia from the decomposition of urea and other nitrogenous materials would undergo bacterial oxidation to produce potassium nitrate. Potassium nitrate is also used as a fertilizer, as a model rocket propellant, and in several fireworks such as smoke bombs, in which a mixture with sugar produces a smoke cloud of 600 times their own volume. In the process of food preservation, potassium nitrate is a common ingredient of salted meat. Potassium nitrate (KNO3) or saltpetre is the foundation of pyrotechnics which every pyro should have in their stock. Usually, it can be bought in pure form from chemical suppliers (expensive) or gardening stores/suppliers (very cheap), these sources can be found with a google search. Good to mention that most countries sell pure KNO3 as stump-remover, search for those too. Most large hardware or garden stores sell many different types of fertilizers. Most are composed of several different mineral salts, where KNO3 is one of them. However, amount of KNO3 can vary with brand name of product. Actually, some brand names can contain pure enough KNO3, which does not require purification. Most brand names are so called NPK fertilizers. In this text I will mostly focus on extraction of KNO3 from NPK fertilizers. In the first place, you should try this if you have absolutely no access to pure KNO3. I have evaporated different fertilizers but after two years I found a chemical supplier where one could order pure KNO3 which costs 3 times lesser and was much cleaner without doubts... Anyway, NPK is a usual 3 number classification of fertilizers that tells us about its content. # N stands for nitrogen and it usually represents salts of NO3- and/or NH4+ and/or other nitrogen containing compounds (as urea) # P stands for phosphorous (defined as P2O5) and it usually represents salt of PO43- # K stands for potassium (defined as K2O), well that can only be salts of potassium, K+. Beats me why they defined phosphorous and potassium that way.. As example here’s a random fertilizer: 20-2-8. The numbers refer to 20 parts N, 2 parts P2O5 and 8 parts K2O. The actual nitrogen, phosphorous and potassium content is 20, 0,44 and 3,3 parts respectively. Remember that N can represent several different nitrogen containing compounds. Additionally, some fertilizers can contain sulfates or other mineral salts. Choosing right fertilizer First of all you have to find out if there are fertilizer types with pure KNO3. Since KNO3 contains one K (1 mol ~ 39 g) or equivalently half K2O (0,5 mol ~ 47 g) and one N (1 mol ~ 14 g), NPK numbers of pure KNO3 should be somewhere proportional to 14-0-47. Keep in mind that sometimes pure KNO3 may not have NPK numbers at all, in that case read the usual package contents! If you're less fortunate, and can only find mixed NPK fertilizers, you came to the right place. First you have to find optimal fertilizer and then extract precious KNO3. Our optimal fertilizer should have NPK numbers somewhere proportional to 14-0-47. Doesn't have to be precisely proportional, get the best there are. As a rule of thumb K value should be greater than N. Fertilizer with greater N value usually contains lots of ammonium nitrate (NH4NO3) which is hard to remove as will be showed further. The P value should be as little as possible, though phosphates are also possible to remove. There can be liquid and solid fertilizers, liquid are more expensive than solid with regard to KNO3 content. Solid fertilizers sometimes can contain up to 20% clay and sand which can be easily separated by extraction with hot water. How to separate potassium nitrate http://www.frogfot.com/synthesis/saltpetre.html THATS ALL FOR NOW FOLKS ,HERE YE BANG FOR THE DAY... cheers and a irish lollipop to ye all
Ha ha, cheers ireland! Yep pretty much the same the_fiend, they are the best smoke bombs ive ever seen, even the ones you buy. tocool4u, you can buy potassium nitrate from anywhere really, alot of sites of the net do it for cheap. Im not sure if they sell it in shops because i think it can be used for explosives or something, but its prefectly legal. I just saw 3kg of it! Thats a hell of alot but thats here: http://www.cqout.com/item.asp?id=2036845 For £20. Also, you can get it on ebay: http://cgi.ebay.co.uk/500g-SALTPETR...ryZ26420QQssPageNameZWDVWQQrdZ1QQcmdZViewItem ANd theres even more on ebay.com, instead of the uk one. Gotta go school now, have fun
Hmm is this any better than a regular smoke bomb? I'm just thinking it would be easier(and maybe cheaper) to go down and buy some smoke bombs...
These will create a LOT more smoke, and it may be a bit more work, but it's definately worth it. Where a normal smoke bomb is always limited in size and amount of smoke, these can be as big as you want. Plus, there's nothing better than that DIY feeling of setting off something you created yourself.
@everyone...if memory serves, purchasing large quantities of that in the US wil lead the FBI and members of the inquisition to your doorstep ... I think that's the stuff anyway.
Methinks you mean ammonium nitrate Gerry, which is used in ANFO by certain less intelligent wouldbe bombers...
Ah yes...my apologies. Thanks for the link; I see where I made my error! (Obviously, I wasn't much of a threat in chemistry class! LOL)
Yes tycobb, it is definately worth it. The fiend has obviously made these before, they are 10 times better than the ones in the shop, and you can make them as big as you want. Just be certain to heat the powders slowly and on a low heat, i got complacent in making them on my 3rd or fourth time, and thought nothing of it, but then the gooey mixture ignited and it actually resembled a real like volcano! Seriously, it actually spat out chunks of ash everywhere, like volcanic rock! I was with my friend and my mum didnt know i was making them, she was out. If i wasnt sh***ing myself so much, it was one of those moments when you could stand back and just admire....but of course i was trying to stop the fire alarm Hey gerry, i looked into it first before buying it, because my stepdad thought the same as you! How are you? I emailed you the other day but no reply...Hope all is well.
Well Gerry, i am a Pyro in training, and i'm soon gonna start second year of chemistry, so you could say i HAVE to know this, in a way.
LMAO, as oppose to me, a sad, immature little boy, with nothing better to do with his time than to experiment wild and wonderful concotions with intent to cause nothing but mischeif....damn right! Muahahaha
However, gerry probably was on to something. I know potassium nitrae is mixed with sulfur and carbon poweder, to make gunpowder. How explosive is gunpowder? Im just curious. I watched a file the other day called the butterfly effect, and one of th ekids go this hands on a "blockbuster", he called it. I was wondering whether this was a regular dynamite stick, thus filled with nitroglycerin and stabilizing agent, or whether it was just gunpowder? Just something i was thinking about.
Blockbusters are mostly a pure nitrate powder compound mixed with normal black powder. Packs quite a punch, but nothing near normal dynamite.
Yes and no. A normal gunpowder mix won't give a bang like that, but with a bit of pure nitrate mixed in (usually with some extra compounds for stability), the ensuing "bang" gets a lot louder.
Oh i see. I hear that gunpowder has to be quite compressed to actually explode, and also be airtight. Well, i dont really understand. Take a blockbuster as an example. It could very well be airtight as it is, but as soon as the fuse burns through the outside layer, its not airtight anymore. That confuses me.
