This is followed by the middle coating and final coating. A brush made of strong woman's hair is used for the final coating. It is said that woman's hair not chemically treated and with fat thoroughly removed by about thirty years' drying is the best. The workshop for the final coating is a room with a wooden floor and with outside ventilation completely shut out. Dust and dirt are dislike to the extreme in the final coating.
Careful attention is given also to the clothing worn by the craftsmen.
In summer, they are naked. In spring, they were a nylon shirt. In the olden days, when there was no nylon, a shirt made of habutae silk was worn. Pasting cloth over the surface of the base Intermediary coating Final coating Upon once entering the workshop, the craftsman is permitted no movement other than what is essential for the work. This is because dust will be raised by the movement of the air.