Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 49 users online :: 5 registered, 0 hidden and 44 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Pen Gun Questions?

Discuss miniature cannons built from things such as pill bottles and pen caps.
Sponsored 
  • Author
    Message

Unread postAuthor: jor2daje » Thu Jul 22, 2010 2:24 pm

I dont see why you would ever use epoxy when you have the option to solder, its far quicker, easier, and stronger atleast when joining things that are meant to be soldered like brass tubes. (no offense jsr :D )
  • 0

Patience is a virtue, get it if you can, seldom in a women, never in a man.
User avatar
jor2daje
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 418
Joined: Sun Oct 05, 2008 9:41 pm
Location: Southern California
Reputation: 0

Unread postAuthor: Lockednloaded » Thu Jul 22, 2010 2:24 pm

airsoft caliber, I think ~1/2" copper pipe chamber
  • 0

I love lamp
User avatar
Lockednloaded
Major General
Major General
 
Posts: 1558
Joined: Thu Sep 03, 2009 9:38 pm
Location: Texas, USA
Reputation: 0

Unread postAuthor: Mr.Sandman » Thu Jul 22, 2010 2:55 pm

jor2daje wrote:I dont see why you would ever use epoxy when you have the option to solder, its far quicker, easier, and stronger atleast when joining things that are meant to be soldered like brass tubes. (no offense jsr :D )
Epoxy is by far easier than using solder. With solder, the parts have to fit a certain way, and if you don't have a metal piston, you cant solder the schrader. Plus with epoxy, if you make a mistake, you can wipe off the part with denatured alcohol and its good as new. With solder, you are't so lucky.

Back on topic, If you want to keep your barrel centered while the epoxy is drying, make a barrel spacer and glue it to you barell. Or you can do what I do and make a duct tape barrel spacer, they are cheap and effective.
  • 0

Yeah, it's that important.
User avatar
Mr.Sandman
Donating Member
Donating Member
 
Posts: 762
Joined: Fri Mar 28, 2008 9:10 am
Country: Antarctica (aq)
Reputation: 0

Unread postAuthor: clemsonguy1125 » Thu Jul 22, 2010 3:26 pm

Just bought the parts for the gun, a rubber pencil eraser fits perfectly would it make a decent piston, Im worried about the barrel cutting into it.
  • 0

That is all.
User avatar
clemsonguy1125
Major General
Major General
 
Posts: 1485
Joined: Tue Jul 21, 2009 4:00 pm
Location: East Coast
Reputation: 1

Unread postAuthor: Gun Freak » Thu Jul 22, 2010 3:59 pm

I don't think it will seal unless it is one of the really rubbery ones, also it might get cut by the barrel. Do they make rubber stoppers small enough for you?
  • 0

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
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

Unread postAuthor: clemsonguy1125 » Thu Jul 22, 2010 4:07 pm

Nope, I wish I had some 1/4 inch thick rubber like JSR used, maybe Ill cast one like RC Mans from hot glue
  • 0

That is all.
User avatar
clemsonguy1125
Major General
Major General
 
Posts: 1485
Joined: Tue Jul 21, 2009 4:00 pm
Location: East Coast
Reputation: 1

Unread postAuthor: jackssmirkingrevenge » Thu Jul 22, 2010 4:13 pm

you could also epoxy the seal to the barrel, and use a solid piston, along these lines:

Image
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Sponsored

Sponsor
 


Unread postAuthor: clemsonguy1125 » Thu Jul 22, 2010 4:19 pm

I would but I cant find rubber tubing that small
  • 0

That is all.
User avatar
clemsonguy1125
Major General
Major General
 
Posts: 1485
Joined: Tue Jul 21, 2009 4:00 pm
Location: East Coast
Reputation: 1

Unread postAuthor: jackssmirkingrevenge » Thu Jul 22, 2010 4:21 pm

... sharpen a section of barrel tubing and cut a hole through the eraser?
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: clemsonguy1125 » Thu Jul 22, 2010 4:22 pm

Thats what I had planned, wouldnt the barrel cut throught the eraser at 400PSI
  • 0

That is all.
User avatar
clemsonguy1125
Major General
Major General
 
Posts: 1485
Joined: Tue Jul 21, 2009 4:00 pm
Location: East Coast
Reputation: 1

Previous

Return to Miniature Cannon Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'