Profile: Etchtech Ltd specializes in offering photo etching, chemical milling, photo fabrication and photochemical machining services. The chemical milling process is used as a method to produce thin (up to 3mm thick) metal components in a variety of ferrous and non-ferrous metals. These components which previously would have been manufactured by conventional machining or blanking operations are produced using acids to dissolve away the unwanted material, leaving the exact shape and size of the finished components.