The sound box of Chikkin was constructed from a thick bamboo stick in the length similar to Yagumo-goto (two-stringed zither), which was cut in half lengthwise, with the opening of the U-shaped form covered with paulownia board and strung over with three strings.
胴は八雲琴の長さの太いタケをたて半分に割り、U字舟形に開く上部にキリの板をふさぐように張り、その上に三弦を張る。