long story short... i went to a friends house and he DESPRITLY wanted to build a cannnon so all i could find was a section of 90 mil sch 80, oh well id have to make do, so i made this combustion, the end is duct taped up, for ignition i drilled a hole in the pipe, to fire, i stick a tennis ball down the barrel, spray in some lynx, and stick a lit mach into the hole.
