On the Reinanzaka House, the labourers were skilled in the use of wood, and helped Raymond engrain the texture of cedar onto the concrete. This was further explored on the Tetsuma Akaboshi and the Morinosuke Kawasaki houses, where the concrete walls of the luxurious interiors were imprinted with cypress textures. On the Karuizawa Studio, workmen polished the concrete with sand and straw to reveal the texture of the aggregate. Whilst at Nanzan University, the south facing facades were cast with checkerboard patterns, with applied metalwork casting abstract shadows on the surface.