Hello all… first time poster long time watcher. I have been working on a small rev flow for the past few months. I used a 30 gallon air tank for the main cooking chamber, a 30 lbs propane tank for the firebox. Used a old bed frame to build the legs and a basketball pole as the air intake and exhaust. Learned a few lessons along the way… Already build a couple of test fire’s and it holds 225 -250 temps very well. Takes quite a while to heat up to temp… about 45 min, but it has been very cold every time I have tested it. Still need to add a shelf and some paint. Here is a page with some pics of the build so far.