This is my first cannon, still working on it. It uses propane and has a built in air tank to clear the chamber, It could also be used to add more air to the chamber too, I guess. The cannon can be loaded from the back or the front, depending on what you're shooting. The design is kind of funky because it didn't turn out exactly how I wanted it, but oh well, it was my first so I learned a lot from making it. I still need to paint it and put plastic dip on the fittings. I'm waiting for it to warm up outside so I can paint it. I'll post an update when it's done.
If you look in this directory, there are progess pics.
http://phexus.net/images/potatogun/
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