Bic pengun

Miniature guns are novelty custom, unique, and sometime downright crude! Common construction materials often include pill bottles or pens. Show us your work!
fenrir
Private 3
Private 3
Posts: 48
Joined: Tue Jul 30, 2013 10:31 am

Thu Jul 03, 2014 12:28 pm

Viva la revolucion! By placing the original pen's nib into the muzzle, it can actually write! I went up to 400 psi 3 times, but then it started leaking :?
Attachments
image.jpg
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26179
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 543 times
Been thanked: 319 times

Donating Members

Sat Jul 05, 2014 7:09 am

Nice effort! Solid rubber pistons are easy to make but at high pressures they do have their disadvantages due to the lack of rigidity.
hectmarr wrote:You have to make many weapons, because this field is long and short life
TrollingCluckster123
Recruit
Recruit
Posts: 2
Joined: Mon Nov 10, 2014 5:26 pm

Tue Nov 11, 2014 11:09 am

400 psi in a plastic pen? That is not a good idea. Those pens are kind of brittle, so if one failed in your hand it would hurt a lot and also cause serious injury. Please use SCH 40 steel pipe for those pressures.
User avatar
mark.f
Sergeant Major 4
Sergeant Major 4
Eritrea
Posts: 3627
Joined: Sat May 06, 2006 11:18 am
Location: The Big Steezy
Has thanked: 52 times
Been thanked: 53 times
Contact:

Donating Members

Wed Nov 12, 2014 7:36 am

He's using brass tubing, not the actual pen.

In regards to your other post, before you bring it up, there are a lot of things not rated for pressure that we use anyway... not always the right thing to do, but we're all adults capable of making a guided decision. For instance: a lot of the higher mixture hybrids we have on the sight are made from non-pressure rated parts, or parts par past their pressure rating.
Post Reply