This is my Lightsaber I made for my Anakin & R2D2 costume. With an Arduino Nano inside, a 9V battery and a PS2 Joystick, I steer my R2. Construction took me some hours. I made a second file for the top of the saber for use without a joystick.
All of the three parts were printed with 0.25mm layerheight and with PLA. The bottom and the middle part were printed pointing upwards, the top part was printed lying.