By way of Hack A Day comes this hexapod robot that does CNC fabrication.
Only recently has [Matt] started playing with CNC. First, he did a pen plotter proof of concept. Now The bot can mill 3D surfaces in polystyrene. It’s still a little coarse and will probably always be a bit imprecise since it’s not bolted down. He’s also still planning to convert it from standard 1/8inch bits to 3mm router bits.
Hit the link above to see what the bot is working away on.