High power air cannon - launching eggs

Yep, there's a pressure valve on the air compressor itself. I set it to cut off about 10 psi below the safety rating on the PVC, so there's no explosion risk. Once the cannon is fully charged though, I have a cutoff valve on it, so I can unplug from the tank for better aiming.

This season I may build a heavy duty model from steel. We'll see if anything comes of that.

yes, that is verry cool what i do is i get a coffe filter fill it half way with BBs shove it down there and shoot some time i but a rubber band on top of it but be careful sometimes bbs go wild