Method for repairing or reconditioning a badly damaged component, in particular from the hot gas region of a gas turbine

A method for repairing or reconditioning a damaged component comprising:

• measuring the damaged component to provide pre-removal measurement data of the damaged component;
• working the damaged component by removing a damaged region from the damaged component while creating a cutout corresponding to the damaged region so as to provide a worked component;
• measuring the worked component;
• creating a computer-aided design (CAD) model of a replacement piece based on the measuring of the damaged component and the measuring of the worked component, the replacement piece being configured to be inserted into the cutout of the worked component;
• producing the replacement piece based on the CAD model;
• connecting the replacement piece and the worked component by joining,
• wherein the measuring of the worked component includes providing worked component measurement data, and wherein the creating of the CAD model includes virtually reconstructing an outer contour of the replacement piece by subtracting the worked component measurement data from the pre-removal measurement data.