January 30, 2009, Newsletter Issue #330: Suggested firing guide: Earthenware biscuit

Tip of the Week

Suggested firing guide: Earthenware biscuit 1150c (cone 2) 100c per hour up to 600c, then 150 per hour up to 1150c A relatively high biscuit temperature is used with this clay body to reduce the incidence of crazing in the glaze while retaining the clay's porosity. Other clays may benefit from a lower biscuit temperature (1120-1140c) depending on their maturing temperatures (check the bag).

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