A device and a method for the production of a master die tool for a component. The method includes the following steps: a) receiving or creating a CAD model of the component; b) deriving a surface model for the master die tool based on the CAD model of the component; c) creating the master die tool with NC machines using the surface model; d) producing an entity of the component using the master die tool; e) detecting the contours of the entity of the component by way of a computed tomography-based coordinate measuring device which supplies a 3D point cloud of surface points of the entity of the component; f) comparing the 3D points of the 3D point cloud to the CAD model, and determining whether any deviations exist beyond predetermined tolerance thresholds, and if this is the case g) modifying the surface model based on the deviations detected; h) reworking the master die tool or recreating the master die tool with the NC machines based on the modified surface model; i) repeating steps d) to h) until no more deviations exist beyond the predetermined tolerance thresholds.