My first UDS :)
OK, So I decided to build my first UDS, I send to make the firebox today morning and it was ready just a few hours later!
I brought the drum for $12 and was used to carry frozen orange pulp cells. It has a brown paint on the inside, I think is anti-corrosive. Have been thinking if burning it or sanding it by hand, but by hand will be hard to reach the bottom of the drum I think so probably will try to burn it tomorrow.
I have a lid from my old Weber grill which is almost intact, not sure if this kind of lid is better than the original flat lid of the drum or visceversa. If I decide to use the Weber lid I will have to remove the border lip to fit it properly.
I never have used (or seen) an UDS so this is a very interesting project :)
Thank you guys for all the information shared here!