In the case of cutting tools, three types of wear zone can be observed: the initial wear zone, the normal wear zone and zone ofaccelerated wear (zone of critical wear). Depending on what physical causes cause the wear, it can be spoken of following types ofwear: abrasive (abrasive), adhesive, chemically diffuse, oxidative. It should be noted, however, that also other external manifestationsof a straining appear on the cutting wedge, which leads to its damage, can be recognized. These include plastic deformation ofthe cutting wedge and the formation of cracks on the cutting wedge