Matthew Savage, a concept artist who worked on Star Wars: The Rise of Skywalker, shared some interesting images recently. The set, featuring 3D models of Rey’s lightsaber, included some background on the design of Rey’s ‘saber, the one she builds during the course of the film, as well as showing off how it’s put together on a deeper level.
In addition to showing designs before the lightsaber’s color was decided upon, these images also show how the internal enclosure, the “kyber crystal cage,” works in this design. It’s a neat little thing, with an outer cover that just slides off, revealing the internal workings and the crystal within. Smart engineering.