Thanks MrCrowley! That is the only way I could make sense of it in my head. Back to the drawing board.

Ok, I've searched and read as much as I could before asking this question.... Is the key to a successful barrel sealer having a little bit of space on the sealing face that is the same pressure asthe chamber/pilot area? The reason I ask is that I made a valve and the sealing face was flush against t...

That was one of my original thoughts, but I know in the long run I won't be happy with just zip ties. http://www.mattsmisnak.com/idea.jpg That is what I was thinking about. Maybe bore out the tee so it slides over the chamber and try to jam a smaller blowgun into a piece of 1" hanging down. Shouldn'...

Thanks for the encouragement people. And thanks Jack for the input. I knew that when I built it. I haven't really seen or thought of a way to mount the blowgun anywhere else that I can do and be happy with. I have very limited tools and that was done for the sake of simplicity and....well laziness I...

It's all PVC, think the sprikler valve is going to be the weakest link. Shooting marbles, bits of 5/8" dowel and other random objects that fit in there. And thats a blow gun I got at home depot. I was a bit worried about the flow, but it works just fine. The cat, well she's "special" and a bit nosy....

Alright, I wouldn't call this one my first cannon, but close. I made the obligatory giant ugly hairspray cannon about a year ago. Fun but unreliable. Stumbled onto this website, still not sure if that is a good or bad thing :) I made kind of a test pneumatic just to make sure the modded sprinkler va...

Went out to every store within 5 miles last night because I was bored and in search of some ammo. Wondered into a little mom and pop hardware store, didn't know they even had those anymore. And behold, Krylon Fusion. I had 2 colors to choose from, but that's still two more choices than I had. Again,...

Thanks for the info people. I think I have it under control now. Well, I guess I'll know more tomorrow when I get a chance to use it. Have it painted and it's drying as I type.

Thanks for the reply Pete, but I may not have made myself completely clear. It's just paint for plastic primer, not PVC primer. Although I didn't look at the ingredients of the paint and I guess that wouldn't be a bad idea but I can't imagine they would make paint for plastics that would weaken them.

Hello all, first post, but I've been studying this site for awhile. I have a question and I've already searched for the answer. It sounds like about the only thing people use is the Krylon Fusion paints. I'm working on a cannon that might finally be decent enough to post up here but I can't seem to ...