Building a Slab Pottery Vessel — Flat Clay Panel Construction

Slab building is one of the three fundamental hand-building pottery techniques practiced since the Neolithic period, alongside pinch pots and coil construction. The method involves rolling clay into flat panels of uniform thickness, then cutting and joining these panels with slip (liquid clay) to form angular or curved vessels. Archaeological evidence from Jomon-period Japan (circa 10,000 BCE) and early Neolithic Europe shows slab-built storage vessels alongside coiled wares, indicating both techniques developed in parallel. Slab construction excels at creating flat-sided forms — rectangular boxes, troughs, and angular containers — that are difficult to achieve with coiling. The critical skill is controlling clay moisture: panels must be leather-hard (firm enough to stand but soft enough to bond) when assembled. Too wet and the walls slump; too dry and the joints crack during firing. This blueprint teaches the complete process from preparing wild clay through to a finished vessel ready for pit firing.