The whole firing process only takes three or four hours and temperatures of 600 degrees can be achieved. The finished pieces are very pleasing to the eye, with high red burnished surfaces and black carbon markings where the fuel was not entirely burnt away.
I have developed this technique with only slight modifications as I burnish over textured surfaces and raise the temperature to approximately 1060 degrees. I have adapted a gas fired kiln where each piece of work is placed very close together, without touching, and a long slow flame is allowed to lick around the piece to give a very dark, red burnished appearance.