When making a shell, drum makers used to have to make the curved staves themselves. A shell would take an entire working day. It was very time consuming and labor intensive.
製作鼓桶時，以往師傅得自己一片片修刨向外彎曲如香蕉狀的彎度和角度，1 個鼓桶需 1 整個工作天才能完成，費時又耗工。