The particular advances in precision machining have provided a large boost to the aeronautic industry, while airplanes need components, which are built with utmost perfection. Precision machining has caused it to be possible to make improved hospital equipment, thus greatly serving a social bring about. Precision machining consists of producing of steel parts, which are extremely intricate and therefore are mainly made coming from thin metal sheets. Besides precision metal parts will often be custom made for specific purposes. The chemical etching process is primarily used for creating precision metal components.