Hugh McLaughlin and I have been working on describing our retort over TLUD char maker, which Hugh has christened the Jolly Roger Oven or " J-RO". The current draft of our paper The “Jolly Roger Ovens” family of Biochar-making devices in pdf, and attached to this story
From the YouTube notes:
A 30 gallon retort heated by a 55 gallon TLUD is the basic idea. I've been a biochar enthusiast for 5 years now and riding the learning curve on how to make and use biochar at home. This device can run very cleanly. The cleanest I have seen for a simple batch device.
