At the end of the fifteenth century, Suribachi with ten to twelve ridged patterns in a single unit, shaped radially in ten to twelve directions, appeared, and in the sixteenth century when big kilns were used, ridged patterns came to be shaped more closely.
その後15世紀末に10～12本1単位の擂り目を10～12方向に放射状に施すすり鉢が出現し、16世紀の大窯期にさらに擂り目をぎっしりと施すようになる。