Fluted foot rings. This takes effort and time. But there are several benefits. It is more sanitary, only a small surface of the clay, which is more difficult to clean, is left exposed. This is doubly important if the clay has some porosity, because it minimizes the amount of water that will be absorbed. The fluting also means the foot will drain in the dish washer. The small surface area is easier to sand smooth so these are less likely to scratch your furniture.