While recent technological advancements have created a high demand for parts and components of increased precision with tighter tolerances and functionalities, the complex nature of machine tool performance makes it difficult to see what causes deviations or errors in final part quality. To produce parts with the required accuracy, the relationship between machine tool characteristics and part accuracy and surface finish must be evaluated, in order to control deviations within required tolerances. In-depth knowledge of the machine performance is a must.