ARGHHH Pistons

Miniature guns are novelty custom, unique, and sometime downright crude! Common construction materials often include pill bottles or pens. Show us your work!
sagthegreat
Specialist 3
Specialist 3
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Contact:

Sat Feb 18, 2012 12:15 pm

I am currently building a Pneumatic Pen Gun, and have been browsing the forum. I was wondering If anyone would like to tell me what i should make the piston and barrel seal out of. thanks
-sagar
User avatar
killerbanjo
Specialist 2
Specialist 2
Posts: 245
Joined: Fri Jun 18, 2010 6:56 pm

Sat Feb 18, 2012 12:36 pm

I used hot glue for the piston and 1.5mm neoprene sheet for the piston head.

Epoxy would be better though. You could also use as solid rubber piston from a 6mm sheet like this one...

http://www.ebay.co.uk/itm/6mm-thick-neo ... 2a192ac127
sagthegreat
Specialist 3
Specialist 3
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Contact:

Sat Feb 18, 2012 5:05 pm

isn't a 6mm piston too thin? also how would I make one out of epoxy. thanks
User avatar
killerbanjo
Specialist 2
Specialist 2
Posts: 245
Joined: Fri Jun 18, 2010 6:56 pm

Sat Feb 18, 2012 5:13 pm

No, should be thick enough providing your careful with the mesurments. But if your worried about not geting it perfect make an epoxy piston with a 1.5mm head, hot glue if you have to but epoxys better.
User avatar
pneumaticcannons
Specialist 3
Specialist 3
Posts: 392
Joined: Sat Oct 30, 2010 9:45 am
Location: shite country in asia
Contact:

Sat Feb 18, 2012 9:25 pm

Try getting ahold of rubber test tube stoppers. They work great and are more than thick enough. Then just sharpen a pipe the same size as your chamber and drill a piston out.
ramicaza <- My Youtube Channel
sagthegreat
Specialist 3
Specialist 3
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Contact:

Sat Feb 18, 2012 10:56 pm

OK thanks hopefully I won't have any problems thanks
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26183
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 547 times
Been thanked: 326 times

Donating Members

Sun Feb 19, 2012 1:18 am

Solid rubber pistons are simple and effective.

Image

http://www.spudfiles.com/forums/mini-0- ... 20101.html

Image

Cut from rubber sheer with a sharpened piece of chamber tubing, be careful though ;)

Image
hectmarr wrote:You have to make many weapons, because this field is long and short life
sagthegreat
Specialist 3
Specialist 3
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Contact:

Sun Feb 19, 2012 2:00 pm

how did u sharpen the tube, and were did u get rubber that thick, and a skin piston looks like a good idea :P




*Also would e-6000 epoxy be suitable for attaching brass parts?
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26183
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 547 times
Been thanked: 326 times

Donating Members

Mon Feb 20, 2012 1:30 am

sagthegreat wrote:how did u sharpen the tube
1) clamp drill in vice

2) clamp piece of chamber material in drill chuck

3) use file and sandpaper to sharpen
and were did u get rubber that thick
found it at work, but there are plenty of sources, synthetic wine corks for example.
and a skin piston looks like a good idea :P
No.
Also would e-6000 epoxy be suitable for attaching brass parts?
Is it actual two part epoxy though?
hectmarr wrote:You have to make many weapons, because this field is long and short life
sagthegreat
Specialist 3
Specialist 3
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Contact:

Mon Feb 27, 2012 5:53 pm

ok i got the barall attached, now i still cant find a suitable piece of rubber for a piston, have any ideas?
sagthegreat
Specialist 3
Specialist 3
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Contact:

Mon Feb 27, 2012 5:59 pm

also, can someone describe how snug the piston should be in the main housing
(srry for being noob)
User avatar
Gun Freak
Lieutenant 5
Lieutenant 5
Posts: 4971
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Been thanked: 7 times

Mon Feb 27, 2012 6:01 pm

You should be able to move it by blowing in the pipe. For rubber, bike inner tube, some mouse pads, rubber washers, etc.
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
mark.f
Sergeant Major 4
Sergeant Major 4
Eritrea
Posts: 3628
Joined: Sat May 06, 2006 11:18 am
Location: The Big Steezy
Has thanked: 52 times
Been thanked: 53 times
Contact:

Donating Members

Mon Feb 27, 2012 6:01 pm

jackssmirkingrevenge wrote:Image
I'll have you know spousal abuse is a serious offense no matter which side of the ocean you live on, jack.
sagthegreat wrote:ok i got the barall attached, now i still cant find a suitable piece of rubber for a piston, have any ideas?
Check a plumbing supply store. They ought to have tap washers in the thickness you need which you could cut a 6mm piston out of.
sagthegreat
Specialist 3
Specialist 3
Posts: 343
Joined: Thu Feb 16, 2012 5:23 pm
Location: Leesburg
Contact:

Mon Feb 27, 2012 6:03 pm

but mouse pads have holes in them...

:)
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26183
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 547 times
Been thanked: 326 times

Donating Members

Tue Feb 28, 2012 2:37 am

http://www.ebay.com/itm/25Pcs-Rubber-St ... 20c2fea32a

ten bucks, loads of potential mini-pistons.
I'll have you know spousal abuse is a serious offense no matter which side of the ocean you live on, jack.
No no, it's my right hand ;)
hectmarr wrote:You have to make many weapons, because this field is long and short life
Post Reply