The lightsaber of four-armed, Besalisk Jedi master Pong Krell from the Clone Wars! Due to Pong Krell's large size I decided this would be a bit more human sized than Besalisk sized, but of course preserved the joint between the two sabers allowing it to rotate!
Be sure to print 2 of everything since it is a double bladed saber. All of the STLs are in the orientation I printed them. Personally, I printed the Upper Chamber, Upper Emitter and Male Rotator with supports generated in Cura.