Photochemical machining (PCM), also known as chemical etching and photochemical milling, is a process that produces complex, burr-free, thin sheet metal components using selective masking and acid to precisely remove material. For more than 50 years, our team has been producing PCM components at an unprecedented pace, scale, and complexity. Widely recognized as a leader in precision thin-metal etching, our PCM techniques use a strategic combination of exclusively designed equipment and patented processing techniques. We produce high-volume stainless steel components with leading-edge tolerances and features with multiple thicknesses.