Originally Posted by BigTone
Hey fellas, I was going to burn out my drum today or tomorrow, what size hole do I need to drill for the air hole in the bottom for the 3/4" threaded pipe nipples? is it a 7/8" hole? thanks, ~Anthony
3/4" trade size measures out at 1 1/8". At this size the threads will not grab the barrel. A good unibit will get you close to an inbetween size.
UDS (not so U) UDD, 22.5 OTS, Coming soon: mini UDS & double barreled RFS