what is the meaning of etching in chemistry subject ?
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Chemical etching is a sheet metal machining process that is used to manufacture complex components with high levels of accuracy. ... The areas of photo-resist which have not been printed are removed, exposing the metal, which is subsequently etched away.
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Etching is traditionally the process of using strong acid or mordant to cut into
the unprotected parts of a metal surface to create a design in intaglio
(incised) in the metal.
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