SpudFiles

alright, this is a pretty good way to make a piston if you realized

OH SHIT MY BARREL IS CUT AT A SLIGHT ANGLE AND IT WONT SEAL!!

instead of just using a rubber sheet/washer/whatever, hot glue a metal washer or coin, then a peice of felt, then the rubber

i just made my first barrel sealing valve and i made this outstanding piston after numerous trys.

the bad news, this thing will leak unless you have a spring, a good spring.

PICTURE TIME !!

good idea, put somthing soft behind the rubber so it tilts to seal the non-squarness

glad you like it

and to the mod who editted my post, sorry bout that.