Here's a few pics of a smoker I seen at a friend of mine's house the other day. I thought it was pretty impressive. A friend of his who is a retired pipe fitter made it. the valves and wheels are all from big piple lines. The front opening is the air intake, the rest of the wheels control the air flow/temperature. the horizontal tank is the firebox, the vertical is where the meat is smoked, this thing's gotta weigh at least a ton!