![Very Happy :D](./images/smilies/icon_e_biggrin.png)
My first pneumatic cannon. I named it Mjolnir (after the hammer of Thor). It is completely made out of copper and brass pieces. It took me about 3 weeks to build and a lot of checking for leaks. The whole thing cost about 175 Euros.
![Image](http://img183.imageshack.us/img183/2464/s3010010au2.jpg)
The valve configuration works with 2 ¾ QEV valve’s, I can trigger them with the ball valve or the blow gun.
![Image](http://img248.imageshack.us/img248/3388/s3010003qi8.jpg)
The barrel is a piece of 22mm copper with a length of 2 meter. I shoot pieces of lead or marbles with it.
![Image](http://img338.imageshack.us/img338/9287/afbeelding002lg3.jpg)
I have taken it up to 10 bar with a bike pump (the pump is capable of 18 bar or 260 psi). I made it from copper because it can take much more pressure than PVC and I feel more save around it.
![Image](http://img401.imageshack.us/img401/4575/s3010012ki1.jpg)
So what do you think?