Additive manufacturing technologies allow the production of metal components without the use of tools and fixtures. 

The design of parts having complex geometry can be focused on the component functionality. 

For instance, in the biomedical, aerospace or racing sectors the weight reduction can be improved through topology optimization and the use of lattice structures or thin walls. 

However, in order to improve the poor surface quality of additive manufactured parts, finishing by conventional processes is still necessary to also meet dimensional, aesthetic and tribological requirements. 

Issues relating to clamping and positioning of the part on machine tools arise from its geometric complexity. 

The need to overcome these limits has recently led to the definition of hybrid solutions with machines that are able to deposit the material but also to remove it.