Technical Details:
I primarily use a very dark stoneware clay, Sheltowee, that fires to cone six, approximately 2232F. I recently have developed glazes that compliment the dark clay body and are safe for every day use, can be used in the microwave and in the dishwasher.
Base Glaze Recipe:
Nepheline Syenite 64.90
Dolomite 21.40
3134 9.40
Ball Clay 4.40
Zircopax 8
Bentonite 4
I have added red iron oxide, copper carbonate, tin, and cobalt to get the variation of colors and surfaces you see in my work.