Welcome to the winter warmer build, which is basically a small portable campfire in a tin can. My Dad built these as a young boy just for fun, and although he knows them as a ‘winter warmer’, they used to build them anytime of year. In fact they work best, and look best, in the summer because of the dry wood available. BUT, an obvious word of caution, be extremely careful if considering making one of these, as stray embers can cause fires. So please use common sense and stay away from anything flammable, public parks, woods, forests e.t.c.
Campfire in a can
What makes a winter warmer unique, is the wire handle for spinning or swinging it. This means if you drill some air vents and swing it in a circular motion you can build up much higher temperatures than a stationary ground fire, because you force feed it oxygen through the ventilation holes. In Autumn this means wood that may be slightly damp can be force dried out with the hotter temperatures generated.