
The first baking (before glazing) requires different temperatures, depending upon the nature of the clay. Some clay can be dried in the sun, as the earliest pottery was; other varieties can be baked in the kitchen oven; but others require extremely high temperatures that can be attained only in a ceramic kiln.
The catalogues of the dealers in potters' tools and supplies include specific information about the most satisfactory temperatures for the various clays and glazes that they sell. You can learn a lot that is helpful from the best of these catalogues.
Page 1 2 3