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something constructive for once

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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something constructive for once

Unread postAuthor: urgle the danish cow » Sun Mar 06, 2011 1:58 pm

for those who remember about august i was asking for any ideas for confetti cannons for my nephews "show choir" well i made them when i was visiting him in december and have been waiting for a good video of them.
the video is from a competition (which they won 1st place)
btw the schools they compete against started rumors that the confetti cannons cost them $3000. that just makes me kick back and laugh.

now to business;
there are two confetti cannons with 3/4 sprinkler valves that are wired to a control bow with an "arming" switch for safety and a "fire" button.
the barrels are 2.5 feet of 1.5inch pvc
the air chambers ride below the air chambers with a pvc support on the end and are also 2.5 feet of 1.5 inch pvc
attached to the end of the barrel is a string 4 feet long made out of some mixture of steel and fishing line which is attached to a cloth wad that helps fling the confetti out.
the two cannons fill the 100X50ft stage with confetti and reach 25 in the air.

sorry this is the best video i could find pictures soon!! the camera doest show the confetti the best but in person it is amazing. SKIP TO NEAR THE END OF THE VIDEO FOR CONFETTI

[youtube]http://www.youtube.com/watch?v=omWZOMn0Ikc[/youtube]
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Unread postAuthor: jackssmirkingrevenge » Sun Mar 06, 2011 2:02 pm

Oh dear... it makes me wish you had loaded them with buckshot instead :? but seriously, nicely done, you achieved a good spread :D
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Unread postAuthor: urgle the danish cow » Sun Mar 06, 2011 2:05 pm

jackssmirkingrevenge wrote:Oh dear... it makes me wish you had loaded them with buckshot instead :? but seriously, nicely done, you achieved a good spread :D

when i tested them in there infant life i used 10 nerf balls in each barrel. that put a new definition to the term "nerf"
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