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Diaphragms

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Diaphragms

Unread postAuthor: spudsy » Sun Jul 30, 2006 10:29 pm

hey im looking for a good material to make a diaphragm (for my pneumatic gun) out of, preferably cheap but at this point, whatever works the best.... thanks :)
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Unread postAuthor: M3NT4L » Sun Jul 30, 2006 11:25 pm

Well you could buy one in the irrigation section of home depot. A sprincler valve is like 11 dollars and they sell diaphragms from sprinkler valves alone so they must cost like 3 dollars. Then you can cut it and shape it to your comfort. :P
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Unread postAuthor: carlbelcher » Sun Jul 30, 2006 11:39 pm

Pretty much any rubber will work. I would start by checking your local hardware/ranch stores (Lowe's, Home Depot, Ace, True Value, Etc.) if that fails get some neoprene from McMaster.
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Unread postAuthor: mark.f » Mon Jul 31, 2006 6:35 am

Not EVERY rubber will work. I attempted, recently, a small little coaxial diaphragm valve with the rubber from the inside of a soccer ball. It was too bumpy on the inside, and therefore wouldn't seal right. I'm pretty sure with a compressor or a CO<sub>2</sub> inflator, I could have shocked it into sealing, but it's a pretty crappy diaphragm material overall.
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Unread postAuthor: spudsy » Mon Jul 31, 2006 8:11 am

thanks for the help guys
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