Etching

thumb|upright|The Soldier and his Wife. Etching by Daniel Hopfer, who is believed to have been the first to apply the technique to printmaking.

thumb|upright=1.3|1835 aquatint showing the first production of I puritani. Note range of tones.

manufacturing process using baths of etching chemicals to remove material

technique used to create tone in a print

technique in microfabrication

thumb|SEM micrograph of lamellar pearlite in a eutectoid (0.8% carbon) steel after annealing. Nital etch. Nital is a solution of nitric acid and alcohol commonly used for etching of metals. It is especially suitable for revealing the microstructure of carbon steels. The alcohol can be methanol or ethanol.

Genre of etching

Glass embossing technique

Electroetching is a metal etching process that involves the use of a solution of an electrolyte, an anode, and a cathode. The metal piece to be etched is connected to the positive pole of a source of direct electric current. A piece of the same metal is connected to the negative pole of the direct current source and is called the cathode.

glass making technique where glass in different colors are layered

system of patterns used in heraldry

Re-emergence of the printmaking practice