![Smile :)](./images/smilies/icon_e_smile.png)
Thanks for everyone's' support! I had a great time building this.
I especially want to thank my wife who put up with me bumming around in the the garage WAY too much, especially since we had our first kid this year. She also put up with my incessant yammering about aluminum this, and fuel mixture that for the last 9 months. If it hadn't been for her reluctant support, this would have never happened.
I wanted a cannon that would fire multiple times with a minimum of effort. Barrel loading would not be acceptable. The cannon would also be unitized, portable, and would be free of external support mechanisms like air compressors. The ammo needed to be cheap, available, and abundant. The ammo needed to be of uniform size. The ammo needed to be non-lethal, i.e. not potatoes. The ammo needed to be re-usable. The propulsion system needed to use a medium that was easily obtained and economical. Parts for the cannon could not be milled. Parts for the cannon would be purchased, found, water jet cut plate, or fabricated by me.
What came out is this:
Progress Photos
Cannon #2 and it's prototype older sister, the #1.
The secret to mixing fuel is just what the doctor ordered
The cannon was completely built, wire anchors, wraps and all, tested, then completely disassembled for painting.
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Pre-paint final build:
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First build before debug:
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For a build history: check out http://propanetennisballcannon.blogspot.com/
![Image](http://lh5.ggpht.com/_9PhQzwI7-Fg/SrfycgrnAtI/AAAAAAAAC3w/Uvbc8IWmlnY/s800/WIN.jpg)