BRK Post 138
I took on a little project today. There are so many little bits of wood scrap left from the events. They aren't a great size for rocket heaters and I've been thinking of ways to use them up. So I took a bunch and turned them into biochar.
I followed some advice on using a pit fired method here:
Dug my pit in Arrakis, made a well ventilated stack of wood, and lit the pile to start the burn.
Grey helped me feed the fire until we went through about half the wood left in the shop. I had to tend the coals until the larger chunks were burned and brittle.
I could tell when they were done in two ways.
They broke apart when poked and the fire they put off changed, less orange and the coal itself glowed more.
During the end of the burn, the hot coals sounded like tinkling glass.
I wet the pile down as pieces finished and soaked it at the end. I'm going to rake it up tomorrow and use it in our Ruth Stout composting.