This workshop focuses on the practices of a range of artisans who shared a set of skills related to the observation and manipulation of human and non-human surfaces. We will explore how, and if, practical knowledge about the surface of things and bodies (and their storage and preservation in relation to specific environmental conditions) led to the concept of nature and matter as composed of layers, and how such a framework contributed to the demise of traditional Galenic and Aristotelian views on nature.