T-Shirt Cannon

[cbale2000]

Originally Posted by snotsdelta

This is great info. Thank you! Do you know of any websites that would be good to order from for the tank?

Tanks of this type are fairly easy to find on automotive supply websites or Amazon (they're typically used for air horns and other such things). I found this site with a quick search but you'll probably want to search around a bit to see if you can find a tank with the large ports but without a huge capacity (it has to be small enough to be portable after all).

On the note of using PVC, generally speaking I agree that PVC should be avoided, especially for the accumulator (air storage), but to be honest there is far less pressure involved for a much shorter amount of time when using PVC for the barrel of a cannon. IMO if you're really that concerned about it, and can't get a suitable pressure-rated metal tube, build a small polycarbonate (or whatever) box around the bottom half of the barrel to catch shrapnel in the event of a failure. Lots of teams have built PVC t-shirt cannons and no one has died yet (that we know of).