Chemical milling or industrial etching is the subtractive manufacturing process of using baths of temperature-regulated etching chemicals to remove material to create an object with the desired shape.[1][2] Other names for chemical etching include photo etching, chemical etching, photo chemical etching and photochemical machining. It is mostly used on metals, though other materials are increasingly important. It was developed from armor-decorating and printing etching processes developed during the Renaissance as alternatives to engraving on metal. The process essentially involves bathing the cutting areas in a corrosive chemical known as an etchant, which reacts with the material in the area to be cut and causes the solid material to be dissolved; inert substances known as maskants are used to protect specific areas of the material as resists.[2][3]
- ^ Harris 1976, p. xiii.
- ^ a b Çakir, O.; Yardimeden, A.; Özben, T. (August 2007). "Chemical machining" (PDF). Archives of Materials Science and Engineering. 28 (8): 499–502. Archived from the original (PDF) on 2015-04-12. Retrieved 13 February 2013.
- ^ Harris 1976, p. 32.