hey, thanx. 4 cc's worked just fine. I shot a sharpened q tip a centimeter into my garage door!
now off to do more shooting

I like the idea of and integrated(sp?) compressor. how many fills does the battery last for and how long does it take to fill to NOP?

for people who dont know, NOP= Normal Operating Pressure

that is amazing. If I had the shop, time, and money i would totally build one of those. It would be nice to know the FPS of the projectile, if you happen to have a chronometer (I probably spelled that wrong).

try some 2" dowles. cut 'em to about 2" long and put those hugeass carriage bolts through the middle.

This is my first mini combustion. I used an old pill bottle, a pen tube, and a BBQ lighter salvaged from my first conbustion (which failed). Only problem is im not sure what fuel to use. I dont want to rupture the medicine bottle (or its lid). Pix are below.

what is a small (but cheap) solenoid valve, and where can I get one?
ps it has to have a good psi rating too

wow nice cannon... im building a metal one how do you get nitrogen tanks[question mark]

Do you know who manufactured it, because if you do you can call and ask for the results of the destructive tests. Make up some excuse, don't say "im building a cannon to shoot potatoes". if the saftey valve goes to 45 psi, that is probably more than its NOP (normal operating pressure) by maybe 5 psi...

my friend made a pneumatic cannon that will shoot a model rocket vertically straight up, and after about five or ten seconds a timer ignites the engine. the rocket goes twice as high as it would if launched from its launch pad. I have heard that this is illegal, but he insists that it is 'just fine'...

Be careful heating the pvc. It is better to lubricate it before it is placed in the freezer.

I don't mean heat it up like with a f-ing blowtorch, just keep it inside until you're ready to shoot ice.

After an unsuccsesful attempt at making my cannon shoot snow, I have been thinking about ice. Ice will not break apart after leaving the barrel like show does, and is completley biodegradable (duh). My cannon has a small 1" dia. barrel, so i have mounted a small section of 1" dia. pvc on a wooden st...

i did use a female adapter with a threaded plug

whats unsafe about the cap?

looks cool... cant wait to see damage shots

hmmmmm I might try a metal cannon for my next project

my first and best pneumatic cannon, i call it the Big Cannon. it has a 1 inch bore. Launches C batteries really well, and just about anything else with a foam sabot. I am currently experimenting with dart-board darts with sabots. It is a big, heavy, clumsy behemoth so I usually shoot it mounted on a...