What to do with all this copper???

Because potatoes only last one shot!
jeepkahn
Corporal 3
Corporal 3
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA

A friend of mine who works at a welders supply shop just gave me a 10ft stick of 1.5" type L, a 10ft stick of 1.25" type L, AND a 10ft stick of 1" type K....

I'm thinking, use some of the 1.5" to make a hipres chamber for my mini modgun (36" .40 cal blowgun barrel with a .5"od compression to 3/4" npt fitting attached to a 3/4"qev with 18" of 1.5"type L copper chamber[it's currently 18" of 1.25sch40 as the chamber])...

And how about the 1" type K as barrel for a steel gun pushing 500+ psi???(time to stock up on 1" bearings)....

I know some of you copper junkies have got some idea's....
User avatar
ALIHISGREAT
Staff Sergeant 3
Staff Sergeant 3
Posts: 1778
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK

-plumb a house
-make a spud gun
-sculpture?

the posibilities are almost endless! :D
User avatar
rp181
Sergeant
Sergeant
Posts: 1090
Joined: Thu Dec 13, 2007 8:47 pm
Contact:

melt it all down, and sell it. then make a bunch of PVC guns =)
But really, nice job on getting the large diameter copper pipe. I say pure copper rifle style, with a 1/2" copper bore.
User avatar
jrrdw
Moderator
Moderator
United States of America
Posts: 6572
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Has thanked: 39 times
Been thanked: 22 times
Contact:

Build your ol buddy jrrdw a 300psi marble shooter. :wink:
jeepkahn
Corporal 3
Corporal 3
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA

jrrdw wrote:Build your ol buddy jrrdw a 300psi marble shooter. :wink:
I was thinking more along the lines of 500+...
User avatar
Gippeto
First Sergeant 3
First Sergeant 3
Venezuela
Posts: 2504
Joined: Sat Jan 19, 2008 10:14 am
Location: Soon to be socialist shit hole.
Has thanked: 2 times
Been thanked: 17 times

1" type K drawn copper has a rated working pressure of 1126psi, and a burst pressure of 7200psi.

1 1/4" type L drawn copper has a rated working pressure of 755psi with a burst pressure of 4550psi.

1 1/5" type L drawn copper has a rated working pressure of 702psi with a burst pressure of 4100psi.

Lots of (safe) wiggle room.

Use of 95/5 tin/antimony solder is recommended. :)

Un-regged CO2 with a 1" or 1 1/4" bore??? :twisted:
"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
User avatar
jook13
Specialist 4
Specialist 4
Posts: 434
Joined: Mon Jan 21, 2008 10:39 pm
Location: Prescott Arizona

There are not many hybrids made out of copper... :idea:
I like to play blackjack. I'm not addicted to gambling, I'm addicted to sitting in a semi-circle.
jeepkahn
Corporal 3
Corporal 3
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA

Gippeto wrote:1" type K drawn copper has a rated working pressure of 1126psi, and a burst pressure of 7200psi.

1 1/4" type L drawn copper has a rated working pressure of 755psi with a burst pressure of 4550psi.

1 1/5" type L drawn copper has a rated working pressure of 702psi with a burst pressure of 4100psi.

Lots of (safe) wiggle room.

Use of 95/5 tin/antimony solder is recommended. :)

Un-regged Co2 with a 1" or 1 1/4" bore??? :twisted:
:D :twisted: :twisted: :D

Oh YEAH!!! How many psi can you compress helium to??? Mach What??? Cinderblock walls won't be a sufficient backstop??? Muzzle energy rated in tons???
User avatar
Gippeto
First Sergeant 3
First Sergeant 3
Venezuela
Posts: 2504
Joined: Sat Jan 19, 2008 10:14 am
Location: Soon to be socialist shit hole.
Has thanked: 2 times
Been thanked: 17 times

With CO2... Mach nothing. :(

But serious punch as the projectiles will be on the heavy side, and WILL be moving, shall we say... "briskly".:D

My marble gun gets 750fps with 400psi CO2 and 14mm glass marbles.

830fps with 400psi air. :twisted:

Convenience costs fps I suppose. :wink:
"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
User avatar
jook13
Specialist 4
Specialist 4
Posts: 434
Joined: Mon Jan 21, 2008 10:39 pm
Location: Prescott Arizona

Convenience costs fps I suppose.
Depends... Nitrogen is pretty convenient once you have a container and a place to fill it.
I like to play blackjack. I'm not addicted to gambling, I'm addicted to sitting in a semi-circle.
User avatar
Technician1002
Captain
Captain
Posts: 5189
Joined: Sat Apr 04, 2009 11:10 am

Gippeto wrote:1" type K drawn copper has a rated working pressure of 1126psi, and a burst pressure of 7200psi.

1 1/4" type L drawn copper has a rated working pressure of 755psi with a burst pressure of 4550psi.

1 1/5" type L drawn copper has a rated working pressure of 702psi with a burst pressure of 4100psi.

Lots of (safe) wiggle room.

Use of 95/5 tin/antimony solder is recommended. :)

Un-regged CO2 with a 1" or 1 1/4" bore??? :twisted:
For high pressure stuff, silver brazing solder is recommended.


http://www.phred.org/~josh/build/brazing.html
User avatar
Gippeto
First Sergeant 3
First Sergeant 3
Venezuela
Posts: 2504
Joined: Sat Jan 19, 2008 10:14 am
Location: Soon to be socialist shit hole.
Has thanked: 2 times
Been thanked: 17 times

True enough Jook. :)

Still, the bottles for CO2 are smaller and lighter for transport, and using liquified gas does provide more shots per bottle.

Only a problem if you leave the yard I suppose. :wink:


Edit:@ Tech; Brazing copper aneals the tube, LOWERING the maximum safe pressure.
Last edited by Gippeto on Wed May 06, 2009 1:28 pm, edited 1 time in total.
"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
jeepkahn
Corporal 3
Corporal 3
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA

I'm thinking about the 60lb bottle of helium my neighbor just had filled...
User avatar
Gippeto
First Sergeant 3
First Sergeant 3
Venezuela
Posts: 2504
Joined: Sat Jan 19, 2008 10:14 am
Location: Soon to be socialist shit hole.
Has thanked: 2 times
Been thanked: 17 times

jeepkahn wrote:I'm thinking about the 60lb bottle of helium my neighbor just had filled...
Mu..Ha..Ha..Ha... :twisted: :twisted:
"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
User avatar
jmccalip
Specialist
Specialist
Posts: 118
Joined: Sun Apr 12, 2009 8:07 pm

A stand for a PVC gun.
Post Reply

Create an account or sign in to join the discussion

You need to be a member in order to post a reply

Create an account

Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute

Register

Sign in

  • Similar Topics
    Replies
    Views
    Last post
  • copper gun...
    by ckman » » in Pneumatic Cannons
    5 Replies
    4577 Views
    Last post by ckman
  • Just another copper gun
    by hyldgaard » » in Pneumatic Cannons
    50 Replies
    25466 Views
    Last post by Nwest82
  • PVC and copper
    by airman » » in Pneumatic Cannons
    10 Replies
    4004 Views
    Last post by jackssmirkingrevenge
  • 1/2 Copper QEV Gun
    by qwerty » » in Pneumatic Cannons
    14 Replies
    6216 Views
    Last post by qwerty
  • co2 with copper?
    by streetfire » » in General Cannon Discussion
    9 Replies
    4827 Views
    Last post by jsefcik