A clearer PDF version can be viewed here INTAGLIO printing techniques tree
Type of mark
ETCHING Hard line ENGRAVING
(With acid) (Without acid)
Hard Ground Etching Line Engraving
Coating the plate with a hard Pushing an engraving tool, called
acid resist that you can scrape a burin, to cut s line into the plate.
through allowing the acid to Any burr produced is cut off.
etch your marks.
Soft Ground Etching Soft line Drypoint
Coating the plate with a soft Drawing directly onto the plate
acid resist that you can draw with a very sharp point, usually
through paper or push things into, with a pulling action. The burr
removing part of the ground displaced from the line is left on.
allowing the acid to etch your marks
Aquatint Tone Mezzotint
Coating the plate with a porous acid Using a mezzotint tool called a
resist that allows the acid to etch rocker, to rough up the surface
a tone except where you prevent of the plate so that it will print a
it by applying a total acid resist. rich velvety black all over and then
scraping, burnishing and polishing
the plate back to make your grey
and white tones
Using light to expose a photographic
positive to a photosensitive coating,
called an emulsion, that is covering the plate.
The emulsion becomes an acid resist when
hardened by light.