Pottery, for Artists Craftsmen & Teachers

Pottery, for Artists Craftsmen & Teachers

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Excerpt: ...a thin stream of oil to flow into the pans. From the merest trickle at first, the flow should be gradually increased as the heat develops. This is observed through the mica spy hole in the door and the one above tells when the flame is reaching its maximum. Should it flare over irregularly before the finish it means that the combustion is not perfect and there is danger of clogging. The supply of oil should be reduced and the draught regulated until the flame in the combustion chamber burns clear. All soot or carbon forming in the fire box should be raked out and the oil supply checked, as it indicates a too liberal supply. As the oil in the tank subsides it should be refilled and the taps checked, as the increase in pressure is apt to vary the flow. The later patterns of oil kilns have several advantages over the kiln described. The muffle construction 104 and the burner arrangements are ingenious and practical, and need little manipulation to insure even distribution of heat. The oil tanks and taps will need attention at each firing, otherwise sediment will collect and choke the even flow of paraffin oil or kerosene. With both gas or oil kilns the amount of fuel consumed should be recorded, together with the time, weather conditions, cones, and results of firing, in the "Kiln Log." 106 Fig. 49 107 CHAPTER XI Glost Firing "When Fortune bringeth thee affliction, console thyself by remembering that one day thou must see prosperity, and another day difficulty."show more

Product details

  • Paperback
  • 189 x 246 x 3mm | 100g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236712935
  • 9781236712936