The term CLAY-BAKING OVEN can be summarized as a KILN, which is a type of oven used for baking clay and other materials at high temperatures. Kilns are typically used in pottery, ceramics, and metalworking, and can reach temperatures up to 2, 000 degrees Fahrenheit. The heat from the KILN causes chemical changes in the clay, such as hardening and glazing, which are necessary for creating pottery and other ceramic objects.