Glazes

Glaze are tested on white midrange stoneware fired in electric oxidation to 1220c. (2228f)

Please Note: Many of the glazes tested, especially the mats, all of the Pinnell and the Red Clay glazes, have also been tested at ^7 ox. The majority of the glazes do not need more than ^6, but can easily fire to ^7. At ^7, some mats give a preferable surface which is a smoother, silk mat. Some mats, however, will yield a glossier surface and there may be color changes. This would be up to you to make these tests in your kiln using your clay body, to determine your personal preferences. There could be a whole cone difference from the top to the bottom of your kiln. It is advisable to use cones placed throughout the kiln, in every firing, to know what top temperature is reached.

Firing ramp with an electric controller is:
100c p/h to 600c (212f - 1112f)
150c p/h to 1140c (302f - 2084f)
80c p/h to 1220c (176f - 2228f)
15 min. soak
cool down max. to 900c (1652f)
Hold 1 hour
Shut off kiln

Note: All raw materials are measured up or down to the nearest half decimal.
Colorants or additives to a 100 gram test batch are measured in percent to the 100 gram test batch.

To see all of my published glaze tests click here. If you cannot see the menubar on the right, you need to update your browser.