Baruffaldi signed a series of aquetints with the pseudonym “Cadore”, to distinguish this production from the rest of his activity, since 1977. The aquatint process consists of engraving the matrix (copper, brass, zinc), with backgrounds of different etchings. That is, the acid, depending on how long it bites the plate, leaves a more or less engraved mark. In the subsequent inking phase, before moving to the press, light etchings will correspond to light tones and a range of very light grays can be obtained, up to absolute black. By using pads of different colors it is thus possible to achieve color prints, without having to use a plate for each colour. It is the so-called “à la poupée” inking.

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