A sheet of watercolor paper is coated with a sensitizer made from gum arabic and a solution (Traditionally potassium bichromate) to make it light sensitive. Exposed in contact with positive film, then washed. After drying the paper is coated with an oil and shortly wipe away while washing to reveal the the image.
Lone tree #2
Lone tree #2 – Gumoil, 10″ x 8″, 2020
1 in stock