An engraver with acid is also known as an ETCHER, which is a six-letter word. An ETCHER uses acid to carve designs into metal, glass, or other materials. This type of engraving is often used to create intricate designs and patterns on jewelry, coins, and other items. The acid etching process involves using a corrosive material to cut away the surface of the material, leaving behind a design. The ETCHER must be careful to control the depth of the etch to ensure that the design is not too shallow or too deep.