Want to make a neat ‘cannon’ for annoying your neighbors?
Take a 7 or 8 foot piece of pipe- big enough to hold a tennis ball (not a tight fit, and not too loose)
cap one end
put a pin through it about 1 foot down from the other side, to keep the tennis ball from rolling all the way down.
Drill a hole about 6 inches below that
put in a tennis ball, squirt a good amount of lighter fluid into the hole, and light it with a match
really cool- my friends and I used to shoot each other with these homemade cannons and you could knock someone over if you got a good blast.
Fun for the whole family and small animals too
We used to do that with Coke cans, back in the pre-aluminum era.