See elaborate instruction in the PDF. BOM: filament: transparant (e.g. colorfabb clear_XT), blue, white and black, woodfill Super glue Bicycle Led light (blinking led) Switch (push button) Electical wire Heat shrink tube Four LR44 batteries Paper clip Used print settings (depends on filament type used and printer): Nozzle temp: 190 dC (for the colorfabb clear_XT I used 250 dC). Nozzle size: 0.4, except for Woodfill where I used 0.8 Speed: 100 m/s Bed temperature: 60 dC I used a brim, but it also prints without Tools: 3D printer Solder station Silver paint (in case of using white filament). Sanding paper