In this video
you can see two of my biochar
methods that I use, a 20liter TLUD gasifier that is gasifying stove pellets and its heat is used to heat up a 60 liter retort which sits inside an insulated 200 liter drum.
The smoke is passed through a cyclone filter followed by a condensation system to extract wood
The copper pipe from the condensation system was soldered using one of my smaller TLUD gasifiers.