Hi all - I found this site a week or so ago and was impressed by all the information and build threads on here. I recently came into procession on an old air compressor tank. It says that it is a 30 gallon tank. The manufacture date on the tank is 1977 and it seems to be in great shape and though it would be a good candidate to turn into an RF smoker. I have never build something like that before but thought it would be a fun project. I have seen some of the calculators needed to figure out the size and the FB and the like but sure I will have many questions through this build.