Aquatint

Aquatint is the name used for acid-resistant granules; the intaglio printmaking process that uses these granules; a print made according to this process. An aquatint print is made by dusting a metal plate with acid-resistant resin granules, heating it to make the granules stick to the plate, and submerging the plate in an acid bath. The acid then eats into the areas between the granules. Aquatint is different from etching because it produces tones instead of lines.