Glazes that contain copper for added color are not overglaze compatible. A Palette Knife is a flexible knife with no sharp point used for mixing or stirring color. Pinholes are tiny holes penetrating a glazed surface. Plasticity refers to the pliability of modeling clay. Porosity refers to the permeability of fired or unfired clay.
Posts are columns of refractory material used to support shelves inside the kiln.
Once the plaster mold is removed, the clay object is known as greenware or unfired clay. Pyrometer is an instrument that indicates temperature in the kiln. Rolling Consistency refers to the consistency to which glazes are thinned for rolling inside ware. Rolling Glaze is a method of covering the inside area of ware by rolling thinned glaze inside. Running refers to the fluidity of a glaze at the point of maturity before cooling and hardening.