Thanks a bunch, I will see what I come up with. I read in another thread that i think you posted about epoxying the nuts for no air leaks. would lock nuts stop the air flow or no?

Its cool, When you get the chance. thanks

Sure, can never hurt. Just scale it down for my needs and then make a 2" one for another gun Thanks a bunch Gun Freak

Only downside to having him build one is that how will i learn? Yeah I can copy his, but need to do the trial and error myself. Why i am here now lol

On the bolt piston though. Will it make a difference if its stainless or not? Lock nuts I assume. 1/4 20 a good thickness? Time to go through the how to section on bolt pistons, or if you have a link. Thanks for the info, more info i have the better my build become.

Ok so the goal here is to have a tight fit on the piston, but not super tight. enough for ease of movement. I know i saw somewhere on here about using a dowel rod and sand paper to polish the inside. Guess back to the drawing board. Sucks not having a garage to work on this stuff.

So should I try a bolt and washer pistion?

Ok so before I have made a combustion, and a pneumatic with a sprinkler valve. So i looked into pistons, and followed MRR video. I made it out of a 1 inch tee, used a brass nipple to for the piston and had to make my own barb nipple. The hot glue piston moved fine by my fingers pushing it. Not as ...

I was given a K Rain sprinkler valve the other day. It is 1 inch, and I was wondering if it would work? To me it is diffrent than a water master valve. I just want to make sure before I use this one. Here is a link http://www.k-rain.com/index.cfm?fuseaction=electricValves.proSeries100&CFID=195934636 ...

Air. Im changing my chamber from 1.5 to 3 inch.

Yeah the pipe i have has the psi on it, just the fittings. Not the first time ive built one, but im upgrading the chamber size. So ill return what i got to day and go to lowes.

I may have gotten the wrong ones for making my new chamber. They all saw NSF-DWV. So is this safe or unsafe. These are Genova fittings by the way. I just went to the local hardware store. The plumbing store is closed on the weekends. So will lowes have the right ones?

Just used the 10ft stick of 1.5" i had. Ill be changing it soon enough.

Do you mean whats on the inside of the gun? The white piece in the of the rubber with the screw on the bottom?

I checked the valve and the arrows are poiting toward the barrel. If i turn it around it makes this werid farting sound lol. Ill try the valve idea monday when i can get a valve from work to use. I did try to fire a potato though but it pushed the spud to the end of the barrel. I may try again in a ...