After alternate industrial interest over the years, laser cladding is back for a new popularity season, thanks to the application of the technique to the repairing of dies and moulds, fully exploiting the selectivity features of lasers. Cladding is a typical operation where a relatively poor material gets noble properties by a proper modification of the surface, covered by a new material which is molten and metallurgically bonded to the substrate. Another opportunity offered by cladding is the recovery and restoration of worn elements (turbine blades, dies and moulds), with enormous economical benefits related to an extended lifecycle. The process consists in adding, under laser irradiation, a material with specific properties on the surface of a component subject to particular stress in specific, and limited, areas in order to improve selected features or restore a geometry. Filling materials are generally used in the form of powders, but it is possible also to use wires. Also a gas can be used to change the composition and performance of a surface layer (alloying), a classic example being gas nitriding of titanium alloys.