Etching
During the lessons about different printing typologies, one of the examples covered was etching, a gravure technique, with engraved lines in a metal plate. The surface is treated with the color and then has to be cleaned, so that the color remains only inside the scratches from where it will be printed, once under pressure. The pupils developed a subject, they later engraved in the metal plate. The whole class then visited Tancredi Mangano in his studio near the school, where he demonstrated how to print the subject on paper with an antique press.