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Help with mini valve gun

Discuss miniature cannons built from things such as pill bottles and pen caps.
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Is this too hard of a build for me?

Poll ended at Sat Jan 14, 2012 2:30 pm

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Help with mini valve gun

Unread postAuthor: Proxywars » Mon Jan 09, 2012 2:30 pm

I'm thinking of making this.

Image
I will need:
    1/8 in id brass pipe
    hot glue
    soft rubber
    1 small screw
    1 small nail
    epoxy
    8mm ID pipe
    Shrader valve
    Pen cap
I believe I will follow these steps
    Make a piston from hot glue inside the brass pipe.
    Assemble a piece of rubber onto the piston and apply the screw.
    Glue a nail inside the pen cap.
    Glue the shrader valve into the brass pipe.
    Grease the piston and slide it down the brass tube.
    Glue the pipe into the brass tube 1/2 an inch away from the piston.
Correct me if wrong as this is my first pneumatic pen gun and my introduction to spudfiles.[/list][/list]
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Unread postAuthor: jackssmirkingrevenge » Mon Jan 09, 2012 2:41 pm

it's all in this thread: http://www.spudfiles.com/forums/pneumat ... t7858.html

I found that an all rubber piston cut from a sheet using a sharpened tube is simpler and more reliable.
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Unread postAuthor: Proxywars » Mon Jan 09, 2012 2:48 pm

Idk where to get a thick sheet of rubber or what the silver thing on your gun parts are =p.
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Unread postAuthor: jackssmirkingrevenge » Mon Jan 09, 2012 2:53 pm

How about this one, no silver things, just rolled up tape. and epoxy :)

http://www.spudfiles.com/forums/mini-0- ... 20101.html

Idk where to get a thick sheet of rubber


Mouse pad ;) rubber wine cork... use some imagination...
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Unread postAuthor: Proxywars » Mon Jan 09, 2012 2:58 pm

Lol i'll buy a mouse pad than haha. I'm going to use the concept of the tape and epoxy =p. So did you epoxy the tape for extra strength or just put epoxy onto to stick to the internals.
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Unread postAuthor: jackssmirkingrevenge » Mon Jan 09, 2012 2:59 pm

I wrapped the tape around the barrel till I got the internal diameter of the chamber, then epoxied it in place.
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Unread postAuthor: Proxywars » Mon Jan 09, 2012 3:01 pm

Okay cool thanx for the help I'll get started on looking for the parts now.
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Unread postAuthor: Proxywars » Mon Jan 09, 2012 7:13 pm

Where can I buy these things?
    1/8 in id brass pipe
    8mm ID pipe

I have the rest but i just need those pipes
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Unread postAuthor: sharpshooter11000 » Mon Jan 09, 2012 7:25 pm

I bought some off eBay in 12" lengths for relatively cheap for other projects. Google it and there's loads of results. 9mm K&S tubing has an 8mm ID.
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Unread postAuthor: Proxywars » Mon Jan 09, 2012 7:34 pm

I can't find this stuff at all can someone get me a link to it or a specific tutorial with findable tubes? :?
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Unread postAuthor: Gun Freak » Mon Jan 09, 2012 7:35 pm

Hardware stores, hobby shops.
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Unread postAuthor: Proxywars » Mon Jan 09, 2012 7:36 pm

Checked locals :shock:
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Unread postAuthor: Proxywars » Mon Jan 09, 2012 9:17 pm

can someone point me to a tut>?
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Unread postAuthor: Gun Freak » Mon Jan 09, 2012 9:27 pm

I had one... My stupid technologically impaired mother deleted every single video I took for it... I was pissed :evil:
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Unread postAuthor: Proxywars » Mon Jan 09, 2012 9:30 pm

That's mest up can u type a tut up for ur pen gun?
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