Profile: E-Fab, LLC specializes in engineering and manufacturing solutions. We are an ISO 9001:2015 certified company. Photochemical etching manufacturing services, an ideal process for precision thin metal parts. Photochemical etching is also known as photochemical machining (PCM) and chemical blanking. Photochemical etching produces parts with greater complexity and tighter tolerances from thin metals like copper, brass, and stainless steel. Thermocompression Bonding is a combination of heat and pressure from a hydraulic press ? to compress and bond lamination layers, joining metals to different substrates. Multilayer laminations add mechanical strength, design possibilities, and flexibility.