This is my SS lined plywood cold smoker I built. I was planning on trying to somehow start a fire in it. Was thinking about using some fire bricks on the bottom as well as above the charcoal on the first rack as a heat shield. I've got a damper on the chimney already and the intake is a home heat register with a flapper damper on it as well. I realize that I may need to swap the intake out with something non toxic but what other problems am I looking at running into? I just want to get it 225. Obviously maintaining the fire without letting all the heat out is also a problem, I was thinking about replacing the 3 1/2 x 10 intake vent with a door (with a damper) for feeding the fire. Am I crazy? Should I just build a separate for box and duct it in instead?