Our design research explores the growth of surface complexity through careful attention to program and technical performance criteria. We contend that purposeful difference along the length of an architectural surface can offer locally fine-tuned solutions to the fluctuating situational needs of occupants. This approach is in direct opposition to conventional construction logic. Therefore, our materials research challenges traditional, static construction methods, replacing them with flexible techniques that produce inexpensive, differentiated surfaces. While this type of research is not new, our recent approach to building difference through dynamic mold making is.