RE: Gunpowder and fireworks!!!
Geeeezuzzz - So much for lightnen off acetaline in a trash bag!
We used to take powder out of old shotgun shells. Powder + few nuts,bolts.Drill small hole in 3/4" pipe for fuse install 2 threaded caps and you gotta a certifiable BOMB. Scares me to think about building one of them things 30 yrs later.