The refurbishment of an apartment on the top floor of a building in the San Salvario district of Turin was an opportunity to test innovative Computer Aided Design / Computer Aided Manufacturing (CAD/CAM) procedures. A COR.TEN laser-cut surface is folded and fitted to the irregular existing space; it covers the living room floor with irregular tiles, it becomes a suspended staircase and it defines the bathroom and laundry box. Several hundred pieces, each one different from the other, are produced and magically assembled together.