Bismarck.Dreadnot said:
»Mag. I used to do that all the time. I could get a coffee can to fly up 100 yards with a charge the size of a film capsule.
That is awesome. I actually meant that jokingly (I make my own fireworks in the bedroom...) so I've never actually done it myself. But big booms are fun. I've always wanted to try out that water heater thing from Mythbusters.

I like booms too, but I'd never do that.. I have the worst luck in the world, and even after the water is out, those things are still pretty heavy... So I mean assuming it didn't just turn into shrapnel and impale me, it would probably land on me.
Me and my brother though, used to take fireworks apart and use the various components to make our own little shows.. The most common thing we'd do is take those huge rolls of black cats apart so that we just had individual fire crackers, then turn them into bricks all tied to one fuse where they didn't pop in succession, just all at once. But we've taken apart and combined everything from fountains and those big box of tiny rockets that shoot all over the place to those tubes where you take a ball with like a foot long fuse and light it and drop it in the tube and run...
One year I took one of those like 3 foot Styrofoam planes and put the propellant charge from bottle rockets where the engines would be. :< It didn't live up to expectation.. It lifted off, then did a tight loop and tried to take my head off.