Bisque Firing Temperature For Raku Clay
Posted 01 September 2010 - 05:32 PM
I am not the most experienced person to be teaching anyone, but I will share what I have been taught.
Bisque is bisque, regardless of the clay. Clay is formed, dried and dried, then fired to bisque, usually between 1700-1800 degrees, although we fire a bit higher, at cone 06. The point where clay becomes ceramic (the ceramic change) occurs at 1112 degrees, however.
I cannot imagine that the bisque temperature would affect your raku glaze. It will only be affected by what you do after you put the glaze on your piece. We fire all our raku at cone 06- 1830 degrees, and use glazes formulated for that temperature.
If I have got this backwards, I would appreciate being set straight, too.
Posted 02 September 2010 - 12:47 PM
Posted 13 September 2010 - 04:13 PM
The ^06 to ^04 is what I have seen most people use. The only restriction is the clay body temperature.
Do not exceed it.