Stainless molds have made possible many of today's most demanding applications, including those where product function requires the 'ultimate' surface finish. Examples include audio CDs and video discs, optical-quality lenses, close-tolerance camera parts, intra-ocular lens implants, and optically clear medical parts. In recent times, all-stainless molds have been used in a growing number of such applications: surface-critical discs, video products, optical appliances, medical devices.