Technology/techniques
1. The selection of timber shall be carried out using the following techniques or methods:
(1) "Sunpo-wari" is the method of splitting a log from the bottom end using a splitting wedge.
(2) The "width division" and "small division" should be carried out without any "breaks in the seams".
(3) After rough cutting, allow it to dry thoroughly.
(4) Using the "ruled paper" and the "honesty stand" to perform "honesty throws".
2. The hoops shall be made in one of the following ways:
(1) In the case of bamboo hoops, the following techniques or methods shall be used:
The bamboo used should be "winter-cut bamboo," and the "sweet skin" portion should be left intact during the "bamboo polishing" process.
(b) To perform "body finishing" and chamfering.
H. The weave should be either a "twisted weave" or a "glued weave," and the number of turns should be five or more.
(2) Copper hoops and brass hoops shall be made using "lap joints" or "integrated joints".
3. Assembly and finishing shall be carried out using the following techniques or methods:
(1) The kuri used shall be red meat, white skin, or with the shell attached.
(2) When using auxiliary nails for the wooden beams, use bamboo nails.
(3) Finish the outer curve using an outer plane, a round plane, or a round plane, and finish the inner curve using an inner plane or a round plane.
(4) If there is a fixed cover, four or more hoops shall be used; if there is no cover, one or more hoops shall be used.
(5) Finish the edges of the wood by planing and chamfering, and polish the hoops.
4. When applying a finish coat, use a waxed finish, persimmon tannin finish, or a lacquered finish.








