You will need:
potassium nitrate (I dont know how but get it)
sugar ( yes sugar
Videos will explain
Nr.1 http://www.youtube.com/watch?v=mprSzNaVpj8
Nr.2 http://www.youtube.com/watch?v=8VVHJXARfoY
TIPS:
It is beter in a tin can (you will figure it out)
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