A simple keyring of the Green Lantern logo. Enjoy! =] Made entirely in Blender.To change colors simply stop the print when it reaches 3.6mm (17th layer) move the Hotend away from the print (using the buttons in Printrun, or something similar) and turn motors off (M84, if I remember correctly). Then MANUALLY change filament and MANUALLY extrude (turn the gear) until the color has been succesfully changed. VERY IMPORTANT: home X and Y axis. Then click on Resume and there you go! Printed @ 0.2mm/layer using Slic3r 0.9.9