5 - SASHIKOMI Wood plugs are used to compose the top border (kamachi) with the 2 lower sections of one side.
6 - TSUNAGI Rectangular (or round) holes with a stiching pattern are hand-cut on the head of the long sides with the aid of a chisel.
7 - SLITS Tongue and groove joints are prepared on the heads to ensure solidity and to create a definitive barrier to water leaks.
8 - ASSEMBLING The 4 sides and the bottom are assembled. We use stainless screws to reinforce the baht-tub while keeping them invisible.
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