You don’t need any of that chemical nonsense to just have fun, though, as this compressed air cannon from [OtisLiu153] demonstrates. The build uses PVC pipes for both the barrel and the air tank.

Alternative to Compressed Air – Inexpensive and nontoxic .you can save money,gas,water and protect the environment. This is a onetime investment so you will never need to buy canned air ever ...

Tourists visiting the picturesque and upscale Italian resort area can now take home a unique souvenir — canned air.