Gran Turismo Multicolor Keychain (printable with normal 3d printers)

thingiverse

This is a Gran Turismo Keychain that can be printed with multiple colors using a standard printer. Simply tell your slicer, like Cura, to stop at the final layer of each color you're printing. For example, if you're making a 5.5 cm long keychain: Pause the print on the 13th layer to switch from white to black. Next, pause it on the 17th layer to switch from black to red. Finally, stop on the 21st layer to switch from red to blue.