MCPC-01

airpress · Mon Mar 26, 2007 1:24 pm

Marble Copper Piston Cannon

I've made a new pneumatic cannon and this time its made copper pipes.
The chamber diameter is 22mm.(20mm inside diameter)
The barrel is diameter 18mm, good for small marbles.(16mm inside diameter)
The valve is a barrel sealing valve.It sits inside a 22mm T.
The piston is made out 2 rubber pieces behind two washers on a threaded rod.

imablackskater · Mon Mar 26, 2007 3:16 pm

those two guns are nice i like the all metal

A-98 · Mon Mar 26, 2007 4:00 pm

yes, very nicely constructed. ive always wanted to make a copper cannon, but i dont have the supplies in my area. besides PVC suites me just fine, but i like the shiny of copper

pyromaniac · Mon Mar 26, 2007 5:09 pm

nice, i want to make a copper cannon but i think ill wait till winter. Is it hard to solder?

airpress · Tue Mar 27, 2007 8:02 am

pyromaniac:
Nope, its very easy to solder, just clean the pipe and fitting,apply some flux inside the fitting and on the pipe. Heat the fitting and add some solder.

joannaardway · Tue Mar 27, 2007 12:58 pm

^It might be looking for a slightly more in-depth guide than that.

Nice launcher - what sort of power and penetration do you get from that?

airpress · Tue Mar 27, 2007 1:11 pm

I haven' t tested it yet of penetration on wood or something.
But i'm making a wooden box with a hole(diameter barrel)in.
I will place in the box a metal sheet or something else and see if it can go throught it.I make this box for safety, if it will bounce back the marble will not bounch on me but on the walls of the box.
I will post pics thursday or friday.

joannaardway · Tue Mar 27, 2007 1:13 pm

I've seen similar (but rather larger) cannons go straight through 1mm steel, and put rounds half way through 2mm.

I'd reckon you might be able to make a mess of 1mm steel.

airpress · Tue Mar 27, 2007 1:14 pm

With a marble or something else as ammo?

joannaardway · Tue Mar 27, 2007 1:17 pm

Marbles can go through, but it's a little bit of a challenge.

The result on the 2mm steel was done with a sharpened steel bolt.

airpress · Tue Mar 27, 2007 1:18 pm

Ok, do you know what cannon it was or have you got a link to it?

joannaardway · Tue Mar 27, 2007 1:50 pm

It was my brother's copper cannon. I would link to some pictures, but the hosting they're on isn't working right now.

lukemc · Tue Mar 27, 2007 2:35 pm

nice cannon. damage pics are gonna be sweet. BTW i like the lines going every which way on the pic of the pistion valve.

MCPC-01

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