Swiss artist and designer Jürg Lehni celebrates the 20th anniversary of his seminal robotic drawing machine, Hektor (2002), in a commemorative Twitter thread. “Imperfect and full of character,” the hanging computer-controlled spray-paint plotter drew at transmediale, Design Museum London, and the MoMA, and remains a DIY marvel for its time: “edged circuit boards, assembly-programmed microcontrollers—we did everything by hand,” Lehni notes about making in the pre-fab era.