The aim for this project is to interrogate the interrelationships between machine tools, machine instruction, material behavior, and geometry, more specifically developing machine fabrication interfaces that target foam as a material. Most plastics are liquids that are molded or formed into surfaces. Foam, however, is ‘cast’ in the form of blocks that are later cut or milled into shape with computer-controlled machines. Though lightweight, foam is solid and brittle rather than thin and flexible in its nature. It favors mass and void relationships rather than surfaces. In fact, a piece of white high-density foam sculpted by a hot wire may have a material sensibility that is closer to chiseled stone than to a typical consumer product made from plastic. Foam, though technically a plastic, seems to have a lot in common with the most archaic of materials in architecture. Like stone, foam can be processed to adopt visual qualities from other materials. It can indeed be shaped to look massive and chunky, like stonework, but also soft and supple, like the draping in a baroque marble sculpture. The design investigation will focus on developing machine logics that draw inspiration from the projective geometries, the poché, and its relationship to mass and void to create architectural details, seating, or wall mounted shelving systems.