Hand molding is a similar method, only a mold or form is used to define portions of the geometry. Hand throwing on a potter’s wheel is another refinement of the handicraft methods. The potter’s wheel is a round table that rotates on a vertical spindle, powered either by motor or foot-operated treadle. Ceramic products of circular cross section can be formed on the rotating table by throwing and shaping the clay, sometimes using a mold to provide the internal shape.