After downloading and printing the Punished Props Academy ROS Light-saber i found it to light and easy breakable, so i redesigned it from scratch so that its now more stronger. If you put electronics inside, just drill out the hole in the center piece of the saber to put in a on/off switch of your choice.
3D PRINTING SETTINGS body's printed 0.3 all smaller parts 0.2 most parts at 100% infill some parts need easy to remove supports