Photo engraving is a process of engraving that applies photographic methods. The most common method of photo engraving is when a photosensitive material that is resistant to acid is applied to a metal.

This material is known as a photoresist. Once applied, parts of the metal are hardened by light shown through a photographic negative. After removing the unhardened parts by washing the material in a solvent, the photoresist develops. Finally, an acid is used to dissolve parts of the metal.

Applications for photo engraving include nameplates, plaques and souvenirs.

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