The wood is first cut very finely. It is then grooved, mortised and fitted with various carpentry tools, such as the plane, chisel and saw. The elements are worked in such a way that they form a lattice of geometric shapes when fitted together. Each of the several hundred elements is detailed one by one, to the nearest tenth of a millimetre, according to the size and angles required to form the initial sketch. The assembly is carried out with very little rice glue but without any nails, although this serves temporarily to hold the pieces together in the assembly stage. The structure is held together by the pressure exerted between the battens.