Aquatint

1. Mix the aquatint with 50% demineralised water in the airbrush container. Run some water though the airbrush to make sure that it is clean before screwing on the container with the aquatint. An airbrush must always be very thoroughly cleansed, as it will otherwise easily clog up. Rinse it with clean water after use. If it does clog up, make a mild solution of soda and water and run that though.

2. Before applying the aquatint, adjust the
   airbrush to produce aquatint grains of the
   required size and density. Use a sheet of
   white paper.

3. Place the de-greased copper plate vertically in the aquatint cabinet against a sheet of white paper.

4. Hold the brush at arm’s length and spray the copper plate evenly, going beyond the edges of the plate to avoid irregularities.

5. Harden the aquatint for 20 minutes in
   the drying cabinet before etching or stopping
   out.