The ``tobi plane'' technique is mainly used in pottery. While rotating the dough that formed the vessel, a kasuri-like pattern is carved at equal intervals using a plane. Inserting a plane into hard porcelain is a skill that only a skilled craftsman can perform. The shading of the carving is dyed, and the plump thickness and indigo color give it a rustic and warm feel. The timeless design, with its beautiful contrast between white porcelain and indigo, harmonizes with the various materials and colors around the table, such as wood, glass, lacquer, and cloth.