#10 can biochar retorts:
All you have to buy is a crimper, then go scavenge some cans.
Then build a few and throw ’em into whatever fire you have.
(h/t Aaron)
Small-Scale (Almost Free) Biochar Retorts
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I’ve been wanting to try a scaled up version of something like this using two barrels.
Does anyone know where I can get a giant crimper tool? :)
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