Salt peter is a common name for Potassium Nitrate, or KNO3. It is commonly sold as stump remover or fertilizer
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by adding more sugar or saltpeter you get a really good smoke bomb (as you can kinda see by his video). However, adding ground rubber makes it really nice
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Also by adding Diesel you can get a bomb. Remember the news back in like 1995 when some guy drove a truck "fertilizer bomb" into a building... That was mostly a KNO3 Diesel mix
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By adding Carbon and Sulfur you get black gunpowder. Now I have heard if you gather all your friends (particularly the Confederate Army) and you pee in a bucket and boil that down, you have a pretty high percentage of saltpeter lining the pot... Have yet to try it though.
Besides being dangerously fun, It is sometimes used in food as a preservative... Whatever you do BE CAREFUL!!! This stuff does not go out with a fire extinguisher and in some cases water, because the KNO3 acts as an oxidizer and can therefore burn without oxygen from the air. It also burns very hot and can become sweet smelling Napalm due to the sugar.
The Cheat and I did many things with it last summer. BTW I posted the video I was talking about at the end of this post; we used 1 pound of KNO3 and 2/3 Pound Sugar. We made it by boiling down the two in water, giving an even and very strong bond prior to igniting. Then we shaped the quite warm pla-doh into the shapes we wanted and lit it off with a fuse (recommended). It burns really hot (I assume that guy's PVC tube was a one time use deal).
The fertilizer number is (13-0-44), this can be found at a local feed store or farmer's outlet, you'll probably be asked to sign off for it for the reasons I said above, and if you want really large quantities... like a ton or two
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like I said, different mixes can give a cleaner propellant, a powerful smoke bomb, or a dangerous explosive... 'njoy
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Clicky
whatever you do make sure to video and post it for us to see.