Ok i am trying to build a pneumatic jack for my robots.

Please keep reading, i know it has nothing to do with a potato gun but i know that you guys can help me here.

Basically i need a one way piston that i can run off of my air compressor because i am trying to prove that this robotics company is ...

Ford gt man, the 8 foot long copper cannon was about $60 to make and how did i lose it?

Well it was a three piece breakdown gun, you can take the barrel, valve, and tank apart and them reassemble it so it is not hard to lose things when they are like that.

I have built cannons before a couple combustions and 1 full copper cannon but i do not have them anymore.

This is not my first build, Altho stupid this is the first build that i used pvc cement and primer! very dumb to use cement only in a combustion

I would have used a solenoid valve but i was ...

This is one of the coolest cannons i have ever built, it is a simple pnematic with an infrared 180x scope on the top that is really kick ass.

It is a modified video camera that was old so i removed the tape assembly and i left the battery pack, eye peice, camera, mini lcd screen, and the video ...