Cool thanks whenever just send it to me.

Ok then i have a question about that, say i was to use an elbow piece and curve the chamber back around and through say a 3" piece of pipe on there how would I ignite that, or am i thinking the complete wrong way?

ok i'll keep that in mind from now on and the as for the ignitor two holes were drilled into the chamber and some end caps were put onto the posts to give the spark, i would post a picture but i can't get a good shot, I already tried. I originally planned to use plans for another gun that i had seen...

oh and a lot of the air escapes from the holes i had to drill for the ignitor posts to go into the gun is there anything that i can seal that with?

Ah no there's no inner pvc and i was shoving the potato the majority of the way down the barrel, also i was having trouble getting my hairspray to ignite, the air mixture was not getting enough air should i drill rifling holes in the barrel?

I just built my first potato cannon http://img355.imageshack.us/img355/5593/picture0027nc.jpg however i can't get the air fuel mixture right, for some reason it will not push a potato through all the way out. Oh by the way here is a picture of the firing mechanism. http://img382.imageshack.us/img382...