These are some test tiles of different clays fired at different temperatures. I'm trying to find a nice white stoneware clay that suits me for hand building sculptural pieces. I have read the clay manufacturers descriptions and found that they are not always that reliable. At this stage I am testing four different clays. They are supposed to be stoneware clays but I have decided to additionally test them at earthenware temperatures too.
Bisque fired with black, red and blue underglazes. I have then partially covered them with a clear glaze for firing.
The Superwhite clay at the bottom seems to be least white in colour - especially in reduction firing. However, the PF700G is looking promising and worth further investigation.