Saggar atmosphere, or concentrate the effects of salts, metal oxides and other materials on the surface of their ware. Some pots may be carefully prepared for saggar firing. One method creates a smooth surface covered with clay slip, terra sigillata, which responds particularly well to the saggar technique. This slip covering may be burnished to achieve a gloss. Prepared pots are nestled into saggars filled with beds of combustible materials, such as sawdust, less combustible organic materials, salts and metals. These materials ignite or fume during firing, leaving the pot buried in layers of fine ash. Ware produced in filled saggars
Craft name curses). The idea of using an alternate name as an attempt to develop a different persona is not restricted to Neopagans: Samuel Clemens' adoption of the name Mark Twain has been described as the adoption of a magical name. Before the emergence of Neopaganism similar pseudonyms appear to have been used by writers of grimoires such as "The Book of Abramelin", attributed to the Rabbi Yaakov Moelin. In traditional forms of Wicca, such as Gardnerian or Alexandrian, Craft names are typically adopted primarily out of regard for their symbolism. Craft names may be carefully guarded and used only with members