[NetBehaviour] Hacked milling machine spreads graffiti poetry around town.

[marc garrett]

Hacked milling machine spreads graffiti poetry around town.

We tend to think of graffiti as being a semi-permanent mark left by an 
unauthorized artist, but Dutch sand writing artist Gijs van Bon wants 
his work to be ephemeral, so he designed a machine that he calls Skryf 
that writes on the sidewalk using sand.

Skryf started life as a CNC milling machine used for woodworking, but 
Van Bon hacked it so that instead of cutting wood, it lays down a thin 
line of fine white sand as it goes. The computer controlled cutting head 
now holds the sand dispenser, and moves so that the letters are laid 
down as neatly as any typewriter.

http://www.dvice.com/2014-1-31/hacked-milling-machine-spreads-graffiti-poetry-around-town