Thanks for all the help! I followed the video on youtube, and bought the parts. Here's a question I have tho.

If I didn't have the piston valve, and I just had a ball valve, that would release the pressure when I flick my wrist. But now I'll have a piston valve with a ball valve behind it. Is this ...

I deiced to make a pneumatic tennis ball launcher recently, and have been searching around the internet, and specifically this forum for information on how to go about it.

I have everything else sorted out, except for the valve. I have seen some people who used lathes to make them, and others that ...