- I'm building a cannon to shoot confetti on New
Year's Eve. It will be an air powered cannon. The barrel
is 4 feet long and has an I.D. of 3/4" <br>and the
air chamber is made from 2 coke bottles. I dont
reccomend you build anything like it because they are
dangerous. be safe with your cannons and catapults and
trebuchets and whatever else is dangerous but really cool
and can be used to throw confetti.
- for my pnematic cannon, i'm using a 1-inch
soleniod sprinkler valve. What kinda batteriers do i need
to make it work?? 3 9v batteries dont seem to
accomplish the job? If you use a soleniod valve please tell
me what batteries you use. Thanks.