 The use of forged tools in mass production can lead to increased consumption of these tools as well as the need for quick and flexible renovations. One of the biggest drawbacks of this process is the difficulty in identifying cracks that form on the surface and travel into the core of the tool. Special tools steels used for forging are expensive, making it necessary to consider renovation during the design phase if there is any chance of repair. Additionally, the cost of materials, heat treatment, and other chemical treatments make it essential to think about renovation beforehand. Non-destructive testing is recommended to detect the size of die-forging defects that may occur during the forming process. This article was authored by Yosef Pilk, Michael Durba, Miroslav Genota, and others.