It is the production of cypress furniture (picture rack).
The board thickness of the cabinet is 23 mm, and the board thickness of the picture shelf is 12 mm.
Of course, it is all solid cypress wood.
Since the depth is 450 mm, it is a two-piece joint specification.
Cabinet joints do not use nails or screws (ARIGUMI).
When the cypress is processed in this way, the workshop is healed with a very good scent of cypress.
I will put them together next time.