Make a Lego cookie-icing robot/plotter
by Cory Doctorow from on (#3CD7K)

https://www.youtube.com/watch?v=_AJYc3mPvRg
Jason Allemann of JK Brickworks (previously documents his latest creation: a poltter that squeezes precise patters of icing onto cookies, built out of Lego Mindstorms, and includes full, downloadable instructions. (more")