The Italian artist, born in Rome and now based in Berlin, builds up layer-upon-layer of ink using date stamps to create surprisingly intricate images. It's a bit like a modern take on pointillism fueled by a scrabble through the stationery cupboard.
In fact Pietrella works in other office-bound media, too, including photocopies, but these date stamp images are his most striking. On the off-chance that you're passing though, Pietrella opens an exhibition starting this weekend at Galleria Civica G. Segantini in Arco, Italy. Otherwise, take a look at his website. [Federico Pietrella]
Images credit: Artribune