SpudFiles

only the barrel! was paper towel rolls

ya, cardboard is pretty incredible... They make model rocket cassings out of it. Granted they use much thicker rolls, but also they are dealing with pressure, and assuming you don't drop a steel weight down your barrel or add a burst disk, the pressure isn't going to go much over 3psi anyways.

This is not the first cardboard cannon:
Click
That one even works with ammo.

But it does show that the cardboard can more or less hold the pressure.
Cardboard cannons are simple, yet amazing projects.

psycix wrote:This is not the first cardboard cannon

I think he meant it was HIS first ghetto cannon.

sorry yes i meant that it's my first ghetto cannon