Abstract: A method of sputtering a metal substance onto at substrate selected from the group consisting of at least one of aluminum and magnalium alloy, includes the steps of: cleaning a surface of the substrate by tap water and R.O. water; coating a base coat on the surface of the substrate; coating a media coat over the base coat, wherein the media coat includes a mixture of poly-butadiene resin, alkyd, and toluene; sputtering the metal substance over the media coat by Physical Vapor Deposition (PVD) process to form a metal layer on the media coat, wherein the metal substance is selected from the group consisting of aluminum and copper; and coating a top coat over the metal layer.