All the credit goes to the guys from Evil Mad Scientist that went viral a few weeks ago with their new AxiDraw plotting machine:https://www.youtube.com/watch?v=ce35RAMMQugI just did my own version so parts are printable. And I use Arduino instead of EBB board.Firmware : https://github.com/misan/grbl-servoInkscape extension to create GCode files: https://github.com/misan/laser-gcode-exporter-inkscape-pluginUse Universal GCode Sender to send files to the Arduino.https://www.youtube.com/watch?v=LZ0dBhwTC3wUpdate: I have added the kind contribution of Cesar Augusto Fernandez in the form of an easy-to-change-orientation pen-holder. And view-only Onshape files: https://cad.onshape.com/documents/236f46681d1cbe31f6d52db0   (you will need to create an account for being able to export parts to STL).