I'm starting my build on my UDS. I scored a drum from my dads work he works at a state park and they have a ton if 55 gal barrels, it did not have a lid on it when I got it. I've drilled my holes at the bottom for vents, gonna install 3/4 ball valve and other 2 holes will be 3/4 capped steel nips. I'm burning the barrel out now, it had a brown paint on the outside and the inside was not painted but rusty. The outside paint has pretty much all melted off while burning, anything else I should be doing or do next? Thanks taylor.