0 comments Glossary of Tub Terms joints & brand 5 – WOOD PLUGS (DABO) The 42mm thick hinoki slabs are joined in such a way (T-joint) that the more permeable head of the plank is completely protected. The “dabo” is a good choice for a softer, natural look. 6 – COPPER PLATES Technique typical of the Tokyo (Edo) area. Each plate covers a long stainless steel screw which solidly connects the front with the side planks. 7 – COPPER DETAIL We cover the joints with a copper plate "kugikakushi", the original technique developed from the ship construction. The copper turns green aftertime. 8 – IRON BRAND We apply a hot-iron seal with our brand logo. Usually we propose to place it on the long side, towards the top right corner.