Pneumatic Pen-gun Project

Miniature guns are novelty custom, unique, and sometime downright crude! Common construction materials often include pill bottles or pens. Show us your work!
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Gun Freak
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Sun Jan 15, 2012 3:14 pm

That's weird, my Ace has racks and racks of the stuff, every size K & S makes.
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Sun Jan 15, 2012 3:22 pm

Lucky.... Ace is almost 70miles their all closed by me. I just got to mcdonalds than lowes and find somtin lol.
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Sun Jan 15, 2012 9:08 pm

Can someone give me the link to some cheap pipes I can use at mcmaster
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Gun Freak
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Sun Jan 15, 2012 9:17 pm

You don't want to order pipes from there, they aren't cheap...

Just to appease you, part number 8859K21 is a decent barrel. But they are sold in packs of 12.
OG Anti-Hybrid
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Sun Jan 15, 2012 9:26 pm

=/ Hmm that sucks.... Since I'm a noob should I use brass fitting and pipes on the mini too or just pipes?
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Gun Freak
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Sun Jan 15, 2012 9:52 pm

You really should make a PVC coax first to understand the concepts. They are more forgiving for newbies. Then once you understand it better, make the mini.
OG Anti-Hybrid
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Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
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Mon Jan 16, 2012 12:03 am

I stick with minis as I dont trust larger ones such as my overpowered gatorade gun which I threw away. I like sticking to minis. I just need a forgiving mini that has decent power.
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Gun Freak
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Mon Jan 16, 2012 12:08 am

Minis are harder to make with precision, that's all I'm saying.
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Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
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Mon Jan 16, 2012 12:11 am

I understand u completely. However as I said I like mini's and intend to stick with them. Ghetto-Smexy. This project wont be perfect as it will use 150psi and hopefully onward. i Found some parts!!!!!! Tell me if it will work!!

Copper Tubing 3/16" OD, .124" ID, .032" Wall, 3' Length

Copper Tubing for Drinking (Potable) Water Med Pressure Type L, 1/4" Tube Sz, 3/8" OD, 5'L

Plug, Fits 3/16" Large End ID, packs of 100

Holds 1000psi but hey never do even with 1369psi rated epoxy rofl
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Gun Freak
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Mon Jan 16, 2012 10:30 am

Sounds good! Now you have to get a fill valve and build it :wink:
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Mon Jan 16, 2012 2:19 pm

I got the Schrader valve. I will add reinforcment on the barrel. Need to go get $2.00 more than I'll buy =p. Wow I'm glad I cought this the Plug, Fits 3/16" Large End ID, packs of 100. Is to small so should it be Plug, Fits 1/4" Large End ID, packs of 100?
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Mon Jan 16, 2012 7:27 pm

I have no idea what you just said. Maybe someone here who speaks that language can chime in here...
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Mon Jan 16, 2012 7:40 pm

The plugs I was going to buy are so small they plug the barrel and dont make a tight fit in the chamber....
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Mon Jan 16, 2012 7:47 pm

Well this is why you get the chamber and barrel before you make the piston.
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Mon Jan 16, 2012 7:48 pm

The plug is a solid piston.
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