"What should an architect do when designing a building and the parts needed to create that building do not exist? is the central question of this textbook. Build the part herself, is the obvious answer. Exploring the process of designing architectural products from prototype to the production line, this manual approaches the mass production of building-specific parts from the point of view of the architect. Thorny issues such as product life, the relationship between product designer and architect, and the chicken-or-the-egg question of whether products inspire better architecture or vice versa are considered.