Hey guys, First time poster, but long time reader, been smoking off and on for several years now. Long story short, I was supposed to have a trailer offset smoker for a party of 25ish this weekend, but that has fallen through. Being who I am though, always gotta come through on promises! My usual smoker is a weber kettle with a couple of smokes on an offset when I can get access to one. I feel comfortable with the basics. In order to wing it, I thought i would build a cinderblock single chamber smoker, using doing 2 wide x 3 long x 2 high cinderblock and this piece of expanded metal: , held in place by some concrete screws. I am planning on a plywood top and make a smokestack (interiorly and exteriorly) out of soup cans down to the mid surface of the cooking grate. I was going to line the bottom with sand in order to protect my buddy's driveway and give additional insulation, and line the cook chamber with tin foil (on top of the sand). Water pans under the meat. Coals banked to one side with a exterior cinderblock hole side out to create draft, controlled by a piece of plywood. Using hickory wood and charcoal. I hope this makes sense. One concern I have is the sheet metal being a little flimsy to support the weight. Anybody have experience with this? I was thinking about using rebar to possibly shore it up, but I don't have anyway of cutting it to size. I was going to build it and burn it out on Friday and smoke on Saturday. Smoking butts, brisket and a couple racks of spare ribs. Please, poke holes in my plans so that I can prepare for everything as best I can. I don't want Mr. Murphy showing up if I can avoid it. I am aware and prepared to use more fuel than usual, since I know it might be a little inefficient. Thanks guys.