Intaglio prints are obtained by engraving with a burin or etching a metal plate. The drawing to be reproduced is carved in metal. Printing-ink is applied in the grooves while the parts that must result white are carefully cleaned.
Burin engraving (direct process)
The burin is a thin quadrangular steel bar ending with a sharp point cut crosswise. It is used to engrave directly on copper. During engraving, the burin raises a thin metal foil, called “burr”, before and along the groove. The burr is then removed with a scraper to obtain clear lines which are typical of this kind of printing.