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 Pneumatic Pen-gun Project « View previous topic :: View next topic » 
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paaiyan
PostPosted: 05/25/2007 10:07 AM    Post subject: Reply with quote

Major General
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Joined: 27 Dec 2006
Posts: 1987
254.51 Spud Bux

_Fnord wrote:
That is an incredible design.
Will it shoot through cardboard? plastic? kevlar? Smile

The smallest gun I made was also the size of a pen, but it was a semi-auto bbg powered by a rubber band.(I think It was back around 01')
I took it on a 3-day class trip, where I shared a hotel room with three other people. There were soo many bbs in the carpet by the end of the trip, it took forever to find them all.

..But just wait till I make my next mini. It will use a single carbon nanotube with a graphite burstdisk as a chamber/barrel, along with a molecular valve to be injected with hydrogen atoms. I plan on shooting buckeyballs with it.

Ok, Im jk. Smile

http://en.wikipedia.org/wiki/Buckeyball


I totally just saw this post, you rock man.
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Novacastrian
PostPosted: 08/25/2007 19:57 PM    Post subject: Reply with quote

Bloody Aussie
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Joined: 11 Aug 2007
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I wonder if you could make a mini thats fire balls out of ball point pens, that would be sick Twisted Evil
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jackssmirkingrevenge
PostPosted: 08/25/2007 20:03 PM    Post subject: Reply with quote

space monkey
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Joined: 15 Mar 2007
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You could make one similar to this of even smaller calibre, but without 3000 psi+ pressures power would be almost non-existent.
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HaiThar
PostPosted: 09/20/2007 17:28 PM    Post subject: Reply with quote

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This reminds me of that scene in the movie "Johnny English" where he was in the secretary's room and said, " I remember, every secret agent used to have one of these pens. Two clicks and..."

Funny stuff...

EDIT:

How do you fire it? Forgive me if it's obvious...I'm new to the whole spudgun thing...
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pyromaniac
PostPosted: 09/20/2007 18:07 PM    Post subject: Reply with quote

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When air is let out of the schrader the bb piston is pulled back alowing air to go through the barrel.
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cambot339
PostPosted: 11/09/2007 15:30 PM    Post subject: Reply with quote

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as an indication of how cool this gun is: i need to change my pants.
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jackssmirkingrevenge
PostPosted: 11/09/2007 17:12 PM    Post subject: Reply with quote

space monkey
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unconventional as far as compliments go, but thanks Smile
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AgiTator
PostPosted: 11/10/2007 22:13 PM    Post subject: Reply with quote

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Nice gat, man. I'm still trying to understand the co-axial design.
I've built several large combustion guns, as well as large and small pneumatic ones, but this design was unheard-of until I read your thread.

Thanks for all the info, man. I'm gonna' try to build one and see what happens.

Great job.

Later ~Tator
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jackssmirkingrevenge
PostPosted: 11/11/2007 1:54 AM    Post subject: Reply with quote

space monkey
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cheers Smile

AgiTator wrote:
I'm still trying to understand the co-axial design.
I've built several large combustion guns, as well as large and small pneumatic ones, but this design was unheard-of until I read your thread.


All is explained in great detail here: piston valves explained visually
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spudgunnerwryyyyy
PostPosted: 11/11/2007 4:19 AM    Post subject: Reply with quote

1st Lieutenant
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Joined: 12 Jul 2007
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God i love this mastery of epoxy and patience.
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jackssmirkingrevenge
PostPosted: 11/11/2007 5:08 AM    Post subject: Reply with quote

space monkey
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spudgunnerwryyyyy wrote:
God i love this mastery of epoxy and patience.


It really wasn't that hard to make, actually it's probably one of the easiest co-axials I ever made - it's just a question of having the right materials at hand. If you look through the replies there's a how-to somewhere.
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AgiTator
PostPosted: 11/12/2007 1:26 AM    Post subject: Reply with quote

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Thanks for the link buddy.

I'd love to see some videos of your gun with sound <?>
Maybe They had sound and I missed it somehow... My volume wasn't muted though.
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jackssmirkingrevenge
PostPosted: 11/12/2007 1:50 AM    Post subject: Reply with quote

space monkey
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No sound I'm afraid, my camera was created sans microphone, alas, alas.

A brief how-to on how I made this project can be seen here.
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Rainman
PostPosted: 12/08/2007 20:44 PM    Post subject: Reply with quote

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I am thinking of doing a project similar to this. I want to make an airsoft gun (purely pneumatic) around this size. I am thinking of a simpler maybe 2 cylindar design. An important part is is must be pumped from an attached pump. Do you know the easiest way to make a compact high pressure pump?
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jackssmirkingrevenge
PostPosted: 12/09/2007 1:20 AM    Post subject: Reply with quote

space monkey
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If you want a self-contained design, then have a look at Clide's mini-pump - a little more complex to build but it doesn't require external power.
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