The surface of pit fired pots often exhibit wonderful surface effects. Beautiful and vibrant designs are etched in unglazed vessels by dancing flames that are the results of combustible materials.
My wheel thrown pieces, after drying, are sealed with a very fine clay referred to as Terra Sigillata, literally meaning sealed earth. Each pot is then burnished with a smooth stone to achieve a very smooth glossy sheen. The pots are then bisqued fired in an electric kiln.
The final firing occurs in a pit filled with combustibles varying from sawdust, seaweed, cow pies to miracle grow.
Although not functional these pieces can be used by placing a glass container in them to hold water.