With the development of advanced 3D CAAD programs, ever more architects have the means to generate freely shaped surfaces. At the same time, more and more clients nowadays are interested in organically curved forms. Complex curves can be easily represented in virtual models, but how does one implement them to full size, when gravity has to be taken into account? As far as the outer skins of buildings are concerned, constructional physics, wind loads and other factors usually lead to rear-ventilated forms of construction, consisting of individual elements with clearly defined joints. Internal spaces, in contrast, provide scope for creating curved forms with jointless surfaces.