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is it a pen or a gun?

Built a miniature cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: clemsonguy1125 » Wed Aug 11, 2010 5:11 pm

Depends, whats you pistons made from
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Unread postAuthor: hi » Wed Aug 11, 2010 6:44 pm

You fooled me! That is a pretty good looking pen gun. :lol:
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: ilovefire » Thu Aug 12, 2010 12:12 am

clemsonguy1125 wrote:Depends, whats you pistons made from


the piston is aluminum tube with a piece of a rubber washer and filled with epoxy
hi wrote:You fooled me! That is a pretty good looking pen gun. :lol:


ha ha ha thanks
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Unread postAuthor: jackssmirkingrevenge » Thu Aug 12, 2010 7:17 pm

Nicely done :)

I was trying to use the same pen model here, but in a way that the firing mechanism could be removed so the pen could still be used as a pen.

Image

Image
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Unread postAuthor: clemsonguy1125 » Thu Aug 12, 2010 7:22 pm

It may seal better at higher pressure mine leaks until you hit 25 psi then seals perfectly
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Unread postAuthor: Ragnarok » Thu Aug 12, 2010 8:13 pm

Hmm. I've seen all of these genuine pen-guns (i.e. those actually built from pens) recently, and I do have a serious question.

What exactly is the legality behind this kind of thing? As far as I understand, even under the US' rather liberal gun laws (well, by the standards I live by, almost all gun laws are liberal), guns (even if pneumatic) which are disguised as another object can constitute a rather major criminal offence (although it may vary by state).

Sure, when they didn't look that much like pens, it was another matter, but now people are actually building them into pens, I think it's a question that really needs an answer.
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Last edited by Ragnarok on Fri Aug 13, 2010 6:54 am, edited 1 time in total.
Does that thing kinda look like a big cat to you?
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Unread postAuthor: ilovefire » Fri Aug 13, 2010 4:26 am

clemsonguy1125 wrote:It may seal better at higher pressure mine leaks until you hit 25 psi then seals perfectly


well hope thats the case with mine
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Unread postAuthor: jackssmirkingrevenge » Fri Aug 13, 2010 1:08 pm

Just bought a chrome finished pen from a charity shop for 99p, I smell another one of these coming when I get home :roll:
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Unread postAuthor: ilovefire » Fri Aug 13, 2010 7:43 pm

jackssmirkingrevenge wrote:Just bought a chrome finished pen from a charity shop for 99p, I smell another one of these coming when I get home :roll:


are you going to make another cartridge one or one like mine?
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Unread postAuthor: jackssmirkingrevenge » Sat Aug 14, 2010 2:57 am

"Cartridge", because in this case a schrader valve will actually fit inside the pen body unlike the parker so I can make a "conventional" firing unit.
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Unread postAuthor: ilovefire » Sat Aug 14, 2010 3:01 am

jackssmirkingrevenge wrote:"Cartridge", because in this case a schrader valve will actually fit inside the pen body unlike the parker so I can make a "conventional" firing unit.


cool, sounds good cant wait to see it finished! btw what do you use for ammo?
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Unread postAuthor: jackssmirkingrevenge » Sat Aug 14, 2010 3:16 am

usually 3mm ball bearings, or cut down nails with tape tails.
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Unread postAuthor: ilovefire » Sat Aug 14, 2010 3:34 am

jackssmirkingrevenge wrote:usually 3mm ball bearings, or cut down nails with tape tails.


these are some pellets i made do you think they would be more accurate than just a ball bearing or is it to small to make a difference
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Unread postAuthor: jackssmirkingrevenge » Sat Aug 14, 2010 3:39 am

Impressive, how did you make them?

On this scale I don't think it would make a huge difference, besides talking about accuracy on a pen gun that doesn't have sights or an ergonomic grip and trigger is missing the point to some extent...
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Unread postAuthor: ilovefire » Sat Aug 14, 2010 3:49 am

jackssmirkingrevenge wrote:Impressive, how did you make them?

On this scale I don't think it would make a huge difference, besides talking about accuracy on a pen gun that doesn't have sights or an ergonomic grip and trigger is missing the point to some extent...


my dad has a grinder similar to this one
http://dental-lab.cn/?p=3&a=view&r=19
and i used a cutting disk and shaped them out of nails, and i didnt think that would make much difference but i thought it would be kinda cool to have some mini air gun pellets to use, plus i was really bored so yea...
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