Installation

In Blender open Edit, Preferences, Get Extensions, then use Install from Disk and pick the gear_clockwork_generator zip.

Usage

1. Open the Gear tab in the 3D viewport sidebar (N). Click the big picture to choose a design from the gallery, or browse a family below it, then press Add.
2. With the mechanism (or any of its parts) selected, the card at the top switches the design with the arrows and shows the ratio and center distance. Surprise, Vary and Finish randomize it.
3. The tabs hold every setting: Mechanism (kind, tooth counts, layout, planets, escapement, clock options), Teeth (module, profile, helical or herringbone, pressure angle), Wheels (web, spokes, hub, bore, shafts), Frame (plates, bridges, back plate, stand), Motion and Finish.
4. Press Play: the gears turn at the right ratios. Motion sets the input speed (or the clock's time scale), reverses it, or bakes keyframes for export.
5. Delete removes the mechanism with all its parts. Deselect everything to get back to the add screen.