EngravingThe term covers many techniques for multiplying prints, either of a picture designed by the engraver himself for the medium, or of a reproduction of a work in another medium by another artist. Correctly engraving refers only to intaglio techniques. All these involve a metal plate, usually copper, on which the ink is held in furrows and crevices cut or bitten by acid into its surface: a print is obtained by rolling the plate, covered by a sheet of dampened paper, through a press; so that the paper is forced into the engraved markings, thus picking up the ink.