Simple, Efficient, Cheap, Flexible Biochar Trench Video, and Frankentree Trailer

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Coming next weekend!  I guarantee the actual video is less exciting than the trailer, but it is much more edifying!  This video will just be an introduction to the idea, and the benefits of frankentreeing.  I hope to put together a much more technical video in the future.

Below is my second fast motion video on the two simple biochar methods I’ve been experimenting with.  A few notes…

Fuels:  I suspect that pieces larger than about 3 inches are better either split down or charred by another method, and chips might be better done in a TLUD or some such device.  I haven’t tried either in the trench though, so that’s just speculation.  I doubt that large wood will char well in the trench because it takes so long to char all the way through, but chips might be just fine if fed pretty constantly in thin layers.  As long as everything you’re putting in turns to charcoal and you’re not getting a lot of ashes or a lot of smoke with it, you’re doing well.  I’ve done green and dry wood.  Dry is better of course.  I think the jury is still out on green wood.  The one I did mostly with pretty green wood was a very hot, large pit and the wood was brushy allowing for the ingress for large amounts of air.  It was still pretty sluggish and I’d certainly tend to let the stuff dry for a summer first if possible.