Laser re-manufacturing has been developed to repair the expensive and important parts in recent years[1]. It is a new repair technology integrating laser cladding and rapid prototyping. The objective of laser cladding is to fuse an alloy onto the surface of a substrate with minimum dilution of the substrate. Areas are usually clad by the overlapping of single clad tracks[2]. Comparing with some traditional repairing technique flame or plasma spray, tungsten inert gas (TIG) welding), laser re-manufacturing has the advantage in controlling geometric size of parts, maintaining material properties, and green manufacturing. Different from selective laser sintering (SLS), in laser re-manufacturing process, the high power laser beam is used to melt an area on a metal substrate while a coaxial nozzle simultaneously delivers metal powder to the molten weld pool.