I am building something a little different after about 15 years of use my Fridge smoker went up in flames. This time I am building a smoker out of an old 500 gal propane tank. Unlike everyone else I have decided to build it up right (Vertical) instead of horizontal. I started with an old tank, shot blasted all the paint off of it, and welded some legs on it. From there I went and plasma cut the door in it, and welded the hinges on them. I cut an access door into the bottom to get to my heat source. I had some shelve brackets made and welded them into the smoker, this way I can remove the shelves. I have not decided what type of shelve I plan on using. I am building it so I can heat it with either propane or charcoal. The propane heat I am building a PID controller to regulate my temp. I am also going to build a smoke generator for the side, but have not figure out exactly how to do this yet. Can't wait for the first ribs out of it, my old fridge unit I could smoke 18 rack at one time, I'm thinking at least double that. I have plenty more work and I will up date with pictures when I get more progress done, for now it's a weekend project.