So our production manager is a big time smoker guy. I'm less so, but we're both looking to upgrade. He will only consider side fire box. I could be swayed either way. We work for a specialty plastic fabrication company building highly engineered systems for corrosive air and liquid handling, but we do about 10% metal fab to support our plastic products. In any case fabricatin' is fabricatin'.
We have been trying to figure out how to build rather than buy. We were planning on using 18" dia x .250 wall steel tube. We can get it for about $50 per foot. assuming an 18" long fire box and a 42" long smoke chamber, we're up to $250 per guy. Plus steel for end caps and pipe for legs. Plus purchased racks, hardware, etc, we're up to $400 on the low end. Plus our fab time. For him, that's better than the $1000 smokers he's looking at. For me, it's higher than I'm looking to spend since a semi decent vertical can be had for $200.
This would be super heavy duty of course, but just a base point for cost of fabricating from scratch.