Abstract: The position of the molding geometry of an assembled mold relative to a CAD data set is determined so the dimensional accuracy of the cast part to be produced can be evaluated. The position of the molding geometry of a first mold part is measured and compared to a desired position according to a CAD data set. The position is adjusted to optimally adapt it to within tolerances. The first mold part is maintained in its adjusted position while the position of the molding geometry of a second mold part is measured and compared to a desired position according to the CAD data set. The position of the second mold part is adjusted to optimally adapt it to within tolerances. Thereafter, the mold parts are fixed together with a curable molding material deposited into spaces in the mold parts that is allowed to harden.