Gears Round-up

Hi, those are from my bookmarks. Can you please tell if there's better ? Thanks !

Uniform and scalable reduction gear (1:256)

Worm-Gear Reducer

Bevel Gears 2:1

Parametric Involute Bevel and Spur Gears

Silent extruder gears

Parametric pulley - lots of tooth profiles

Bevel Gear assembly

Herringbone Geared Extruder