SCORE! My friend gave me a barrel today that has no liner!!! the inside is shiny and clean! It has a closed top...it appears to me that if I were to go around the outside edge of the seem or roll where the lid and the drum meet that the lid could then still be used and would "seat" down into the barrel for a good tight seal. OR, should I just cut the top out from inside the lip leaving the "roll" OR cut the top off just below the roll then grind it smooth? comments? I will take some pics tomorrow... SCORE #2 My same friend has a 5' piece of heavy 2 inch ID pipe with a 1 1/2 inch commercial ball valve on one end...he gave me that also! Will that be enough for the air intake or should I plan on a second (and even third?) air intake? I can't wait to get this thing started!