steel pen gun

Miniature cannons are novelties made with materials such as bottles or pens.
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to_live
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This is my first attempt at a barrel sealing piston or any sort of piston for that matter. I am using a bb as a piston not to sure yet whether it will work? The body of the pen gun is made from 6.3mm id steel the wall thickness is roughly 1.5mm, and the barrel is made from an old pellet gun barrel rouhgly 3.5mm, I am using a shrader to fill the pen gun and as the trigger. Nothing has been glued yet I am waiting to go down the street to get some araldite. Any suggestions?
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what it will look like once i have glued it all together.
what it will look like once i have glued it all together.
P1000023.JPG (30.63 KiB) Viewed 2811 times
the internals
the internals
P1000022.JPG (31.95 KiB) Viewed 2811 times
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jook13
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Its looking pretty sweet so far. let us know how it works when all is said and done. or better yet, get some video of it working...
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jor2daje
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Have you got anything to help make a good seal between the barrel and the airsoft bb. Other than that looks pretty cool.
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i am going to put a piece of neoprene between the bb and the barrel didnt cut it yet because i would probably lose it.
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jackssmirkingrevenge
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to_live wrote:the barrel is made from an old pellet gun barrel roughly 3.5mm
What sort of pellet gun is that then?

The gap between the BB and the chamber wall is relatively small but not insignificant, make sure you keep your pilot volume tiny.
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to_live
Private 4
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the pellet gun was just a cheap one from a $2 shop before they were banned (i live in australia) i hadnt thought about the pilot volume but thanks i will keep that in mind.
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