On 5/11/24 05:41, discuss-request@lists.openscad.org wrote: > If you can generate bevel gears, then you should be able to make Curvic > couplings. I've designed a meshing spherical gear which couples with an identical partner at any angle. The upper surfaces couple together using a similar approach to this hirth joint: https://www.printables.com/model/428482-truncated-octahedron-sphere Mostly just a "I wonder what would happen if..." experiment at the moment; I don't know of any practical application.