Special herringbone planetary gear. The only way you can manufacture this piece is 3D printing as the interlocking gears cannot be assembled afterwards.
Author: Emmett Lalish
This particular model has been printed with 0.16mm layer height, 0.4 nozzle, Basic Bambu PLA on a Textured PEI Plate.
Print takes roughly 1 hours at 0.16mm layer height.