I actually made this to be the base of a planter, but the middle of this humped up during the drying process. This happens with flat pieces when you let them dry too quickly. The clay dries more from the outside inwards. So, the shrinking clay from the outside pushes the clay in the middle, creating a slight hump upwards.
Firing: High fire oxidation
Clay: Black mountain
Made with glazes at Echo Ceramics