The disk inside the baren takes 40–50 days to create, as the craftsman glues one sheet of paper on the disk each day. The disk must then dry for a year before the baren is assembled. The coil and covering of the baren are woven and formed from parts of the bamboo plant, requiring the skill of a true master. Only one known person in Japan is still making traditional ("hon") baren for a living — Hidehiko Goto of the Kikuhide workshop.