thx guys, what happens if co2 goes through these and they arent all the way in? Using te primitive tools i have i still cant get then in all the way. I havent tried using WD-40 but ive tried another lube, it did not work as well as teflon. Ill be happy with this even if this is the case. Infact if y...

I bought some copper pipe today to make valve for my bb machine gun project. I cant seem to screw the pipe into its parts more than half way, i know when you are screwing something in you get more resistance as you go further but this is rediculous. So is there some secret technique for screwing thr...