the fire place is indeed an important piece of cob sculpture.
I follow scrupulously the Rumford design by shaping the inside part using a foam board that will be easily scraped out later
the result is an efficient chimney
mixing white sand, white kaolin clay, local red clay, casein paint and flour paste—I reached a soft, velvet, clear surface
the reciprocal roof combined with the long column of the chimney have given me greater satisfaction than I had expected. with little fire, the heat is intense and the smoke is sucked up straight out of the room.