This is the cannon I made for my daughter's dance studio's Nutcracker show. They needed a cannon that would not only be easy to manuever, but do something, as well. They could not have any combustibles in the theatre and it needed to be narrow enough to fit between the wings (stage talk), easily. So, I basically built a big piston that forces out "Halloween" smoke. You will see how it works in the video. Enjoy!!!