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stoppers

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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stoppers

Unread postAuthor: guy_with_a_gun » Wed Oct 25, 2006 7:03 pm

i have an idea for a new cannon i want to make and it includes a stock made out of pvc but it reqires stoppers to keep the air from flowing through the stock, and i was wondering, how do i make/get an effective stopper? im not 2 sure if they make them and sell them at the local hardware store but if you guys could help me i would really appreciate it...

-Thanks :D
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Unread postAuthor: MisterSteve124 » Wed Oct 25, 2006 7:16 pm

You mean like a cap for inside of the fitting right? At home depot they sell ones but they aren't pvc theyre plastic so when I used one I cut a peice of sheet metal the size of the hole and put calk around the edges then put the sheet metal in and calked that. The peice of pvc will push up against the cap and metal and keep it in place. It holds for my combustion but if your planning on making a pnuematic I'm not sure.
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Unread postAuthor: guy_with_a_gun » Wed Oct 25, 2006 7:39 pm

yea its a penu... for around 80-100 psi
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Unread postAuthor: MisterSteve124 » Wed Oct 25, 2006 7:44 pm

Well I don't know I guess you should just use multiple layers of sheet metal and just skip the plastic cap since the metal would be stroger but I'm not sure on this so wait until someone else posts but I think maybe like 4 or 5 layers would do it.
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Unread postAuthor: rna_duelers » Thu Oct 26, 2006 5:50 am

Get a penny or other coin and some glue,heard it works wonders.
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Unread postAuthor: Brian the brain » Thu Oct 26, 2006 11:05 am

drill out two reducers, so the pipe can slide through, cap the pipe you put inside of it. Set up the reducers like -}{-
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: SquishY » Thu Oct 26, 2006 1:05 pm

Reducers or busings? I don't follow your post Brian and even though I'm not a veteran at this I don't belive he will either.
*edit*
Try looking at a specialty plumbing store, the one I buy all my stuff at has caps that have the O.D. the same as most I.D. pipes.
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Unread postAuthor: POS » Thu Oct 26, 2006 2:29 pm

take a bushing, a reducer you put on the outside, a bushing on the inside. The work like BTB said.
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Unread postAuthor: guy_with_a_gun » Thu Oct 26, 2006 4:32 pm

kk ill try that thx
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