This is the improved and simplified version of the stove featured in the Dec/Jan 2016 issue of Mother Earth News. Please subscribe. Also, head on over to my site for more DIY projects: http://timothyluce.com/projects
Note: after running a few burn cycles I recommend making the slots that are cut in the grate (the bottom of the burn chamber) wider in diameter. I would make them approx 1″ wide. Reason being the openings are too small and they are not self clearing.
I also modified the air inlet a little. The hole is the same but I cutout an additional section in the bottom of the grate where a metal pipe for air intake is turned up at an approx 45° angle This injects air directly into the coal bed. I’ll post a video update on the air intake mod.