Although 3D printing promises a revolution in many industries, primarily industrial manufacturing, nowhere are the possibilities greater than in the field of product design and modular architecture. Ronald Rael and Virginia San Fratello, of the cutting-edge San Francisco–based design firm Emerging Objects, have developed remarkable techniques for "printing" from a wide variety of powders, including sawdust, clay, cement, rubber, concrete, salt, and even coffee grounds, opening an entire realm of material, phenomenological, and ecological possibilities to designers.