So I've been working on a cheap offset. I got it for about 100$ off amazon, and figured I could find a way to make it a reverse flow, and down the road, buy or a build something with better steel. Here's what i've been working with.
Not the greatest, not the worst.
I burned some coal through it, and it had leaks everywhere. I then got rope gasket for the main chamber, and used a high heat cement around every opening to contain the rest of the leaks.
(also added in the board and hooks. just drilled holes in the metal, then screwed in from the bottom. easy peasy)
This is when I started to think of how to make it work like a reverse flow system. And got creative.
using aluminum dryer pipe, and a sheet of flat aluminum, i made a prototype. It fits snugly into the chamber, with a cut out for the pipe. The final version will be cut from steel by a local machine shop.
this is the interior of the smoker
what you can't see is that I also extended the chimney down to grate level.
Now, the question, did it work?
Yes! The firebox was leaking air like crazy still, so I put a brick on there to help the box seal. That will now be a defacto piece of the smoker.
and does the smoke fill the entire chamber?
it appears so. I tossed in the broken pizza stone as I thought it might help with ambient heat. and the brick is in there as a way to keep the baffle tight against the wall. When the final piece gets made, it will be fully secured and sealed, so no brick will be needed.
I'm still working on a way to make it electric AND charcoal, but right now, I think I've done well. Now if I can just figure out how to work out a drip pan.....