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Depends. Hardwood vs softwood does create a different charcoal in terms of density. Softwood has a lower btu and therefore doesn't require as hot a fire to make. Most of my charcoal comes from fir and pine framing cutoffs and it breaks up nicely as well as removes all those lovely terpenes from...

Of course! The science and principal are sound. About breaking down the chunks, I imagine I won't have to do that for a another year yet. The improvement I would make is adding a mat a top the charcoal to filter the super fine charcoal dust. My fan pushes air through and thus I have a slight...

Thanks jeeba! And here's my homebrew charcoal filter. I created a 4" length of pipe out of hardware cloth at the base of this duct. So instead of 3" of charcoal the air moves through in more mainstream commercial filters. The airflow in this has to travel through ~20" of activated carbon. As...

Always interested in creating things from scratch, I wanted the utility of a activated carbon filter however with a substantial reduction in cost. By researching BioChar and Wood Gas and viewing some youtube vids, and a couple of experiments later I was able to produce about 40gals of it for...