First you ll choose your product series.
Build your own outside wood furnace.
A round firebox or cylinder is definitely the way to go.
Build your own outdoor boiler here.
To start there needs to be 3 pieces of 1 2 steel laid out for the bottom of the furnace.
A homemade outdoor wood furnace can be made very simply and run off a small duck fan that is inside the ducking.
It is really just a steel box inside of another steel box.