Jose Julio turns a RepRap 3D printer into an air hockey-playing robot that looks pretty tough to beat. Jose has posted detailed build instructions and 3D models for the robot. The good news is that you can probably turn it back into a printer to fix or replace whatever it is you smash after continuously losing to your roommates or family. The usual caveats apply in terms of having some pre-existing skill to build your own, but this isn’t like putting together a Lego kit.”]
Source: https://gizmodo.com/hack-a-3d-printer-into-a-surprisingly-skilled-air-hocke-1518317429