Laser Engraving
Instead of cutting, laser engraving also allows to skim razor-thin layers of material which results in areas of intriguing colour contrast or even three-dimensional pictures. Laser engraving offers amazing results with materials such as paper, cardboard, wood and acrylic glass, but also leather, fruits or nuts.
Also look at Laser Cut
Photos papergravure by Michael Pfeiffer
Photos woodgravure by Sebastian Wolf