Patent attributes
The invention relates to a method for layered production of a three-dimensional object, wherein a powdery or fluid building material, which can be solidified by the effects of electromagnetic or particle radiation, is applied in layers having a layer thickness d, and the locations in each layer which correspond to a cross-section of the object allocated to said layer are solidified by means of electromagnetic or particle radiation. According to the invention, each cross-section consists of a contour region and an inner region and the method comprises the following sub-step: in a sequence of N successive cross-sections, wherein N is a whole number greater than 1, a partial region is defined in every cross-section as a critical region and the rest of the cross-section is defined as a non-critical region, a number of N layers are applied successively, without solidification of the non-critical regions. The non-critical regions of all N layers are not solidified in all N layers until after application of the Nth layer.
