Such a furnace is a complete replacement for a fire, while it does not need third-party fixtures to fix a pan or pot. It is enough to take a log of hard wood - oak, teak, alder, birch, ash, linden, walnut; with even sections for the stability of a home-made oven and cooking containers. Such logs can be prepared a few and go with family and friends out of town!
For the furnace we need:
Hardwood log; Chainsaw; Sawdust and paper for ignition.
We divide the log into sectors with a chainsaw, but do not cut the log to the end, you need to leave about 10-15 cm of “live” wood.