While I finally finished building my smokehouse and it has been a great experience, and it turned out better than I had envisioned. I got to say last winter I saw a smoker build on a different forum can't remember where but it inspired me to build something much bigger than what I had. I did see the build I speak of is on this forum as well posted by Rancid Crabtree, and to him I say thanx for giving me the vision to create what i did. While I started this late last winter and got frusterated with it so put it in the corner until a couple weeks ago when I decided I had to get this thing done. I don't have a step by step for you but just completed pictures.
The smoker is built with 3/4 car siding on the exterior, 3/4 plywood with aluminum sheeting on the inside, framed with 2x4's and insulated with 1.5" pink styrofoam board. I put it on some steel castors to move around because it is extremely heavy. Inside it has the Northern Tool burner, I plumbed the gas line out of the smokehouse with black iron pipe. Eight shelves made from expanded steel, and dowels for hanging. The vent is a 4" stainless steel stack and the intake is a 2.25" x 12" floor vent. I probably over did it on the hinges with five on the top and two on the bottom, however the last thing I wanted was the door ripping off. There are thee pull clasps 2 top door, 1 bottom and i just used regular weatherstripping to seal up the doors (seams to take the heat so far). Smoke will come from a AMNPS. Then I put a 5" trutel in the door to top it off. While as I'm typing this I have my first smoke going in it with beautiful TBS and two racks of ribs. When those are done I got a couple salmon fillets waiting their turn. Hopefully this post will inspire someone to build something similar, just like what happened to me. I am new to this forum and have truly enjoyed searching the archives for the plethora of information all the members have shared. There is a ton of priceless info on this site. Again sorry for no step by step pictures I didn't even take any