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I seen some on CL Spokane. it was 7.50$ square foot. regular price they said is 12.50$. way too pricey. Personally, being more of a welder/fabricator, I prefer steel because its easy to repair and very strong. 2" tubing at 24"centers skinned with 16 gauge steel on the outside, and 1/8" wood...

Im not sure, but I think LMTV might have been referring to FRP-SIP panels, and not the ones at Home Depot for bathroom walls etc. The SIP panels are "cored", and have UV inhibiters in it. They have a "R value" of maybe r13, and need little frame work, if any at all. The West Epoxy System has...

then go with the wire welding. 16 gauge is pretty thin and you'll blow through it often, then have to close the gap. Id use the wire feeder if I was doing it. I only use stick (SMAW) with heavier steel ( 1/4 inch above) or alloy applications.

Is this breaking some rules going off topic? I get carried away when its about building stuff.

the fire box has a bottom air supply to feed the fire, and a top one to help it draft into the lower part of the smoker.

here is the diverter pan with the fire box exhaust open on this end and the far end too. it has to flow across to get out the stack which will be on the top of this end.

heat/smoke from the fire box flows under the divider pan, which has a slight slope and "V" for drainage, to the opposite end then up across the food racks. It heats the divider pan, then has to flow completely across the food to the exhaust stack, then out. this makes sure there is no short...

10 hours with a wire feed is plenty when you use a flux core wire. if you are good at brazing, the TIG would be easy to learn, but you still need a TIG torch, preferably a foot pedal, and possibly a coolant tank and pump if you are going to exceed the duty cycle on the air cooled TIG torch...

Borrow or buy a lincoln sp100 weld pac wire feed welder. you can run flux core wire with it outside and don't have to worry about the wind blowing the shielding gas away. its 120vac input and cost under 400$ new. it will weld 20gauge (move quick) and up to 1/4 inch plate. Just keep the duty...

Also, if you decide to use aluminum, which I wouldn't, you had better TIG weld it all. When MIG welding aluminum, you get a "cold start" where there is little penetration of the weld, and thats usually where a weld will eventually crack and fail. steel to a far lesser extent. Too many variables...

steel is 3x stronger than aluminum pound for pound, so its a lot cheaper in cost for the same strength required.....use steel. BTW steel rusts and can be easily repaired. Aluminum corrodes and is difficult to repair. I was a welder (aluminum)on the St Frances Challenge built at Stephens Bros in...