In order to produce a three-dimensional object in a stereolithographic process a plurality of layers (30) are cured in a chronological sequence such that, as a whole, they form the three-dimensional object. The layers are divided into two or more sub-regions (31, 32) which lie substantially adjacent to one another within the layer, wherein one sub-region in an edge area (34) adjoining another sub-region of the same layer contains area parts (35) which protrude into the other sub-region in a form-fitting manner. These sub-regions are developed one after the other and thus together form the desired layer regions.