My new potatoe cannon
- I finished my cannon and spent yesterday firing it. It's a spudzooka
look-alike. WOW. Put a hole in a 3/4" sheet of plywood! The cannon is
36" long. I used ABS and wrapped it with fiberglass tape as gaurd
against explosion. I made the valve out of a toilet valve glued to a
2" wide piece of stiff rubber which I cut out of boot. That was
after experimenting unsucsessfully with other methods. No fule, just
125psi from an air compressor.