Originally Posted by bover
Working on building my first UDS right now. The drums I've got have removable locking lids, and the lids themselves have a ~2" bung and 1/2" air vent both with screw-in caps. In y'alls vast experience do you think just removing these caps during the cook would be enough ventilation for the smoke or should I drill some more holes? Right now I'm thinking that the bung alone would provide about as much flow as the vent on a Weber lid so no additional modifications would be necessary, but would appreciate insight from you guys.
I have a 6" long piece of PVC screwed into the 2" bung and it works fine. No need to drill any additional holes.