Bob Carlson wrote: > I believe the basic and immutable fact of hirth joints is that every ridge and valley in a joint radiates from a single point. I truly believe the same principle also applies to face splines: <https://lists.openscad.org/empathy/thread/ZKVGHKWILUSO6NIM7MTYTWCEFWEWF75C> The code was created mid-September on Version 2021.01 and didn’t work for some people, but Michael Marx (spintel) found the solution.

Congratulations! This is a definite nerd level up moment! On Thu, Nov 21, 2024 at 5:30 PM Bob Carlson via Discuss < discuss@lists.openscad.org> wrote: > As the OP I am pretty sure I have reached peak OpenSCAD. It’s all downhill > from here. > > -Bob > > On Nov 17, 2024, at 06:22, Michael Möller via Discuss < > discuss@lists.openscad.org> wrote: > > > > >

I have revised my code based on various discussions and now the teeth angle exactly matches with the defined angle. This is the angle between the 2 teeth viewed from the direction of the cutter path. The explanation of the process of designing is complicated, but I have attached a trial.py file which has the code for this. Also as per my understanding till now, it is not possible to have an inclusive teeth angle of [image: Screenshot 2024-11-23 at 12.17.07 PM.png] [image: Screenshot 2024-11-23 at 12.18.17 PM.png] teeth angle of 5 deg with cone angle of 0 deg, at higher cone angles it is not possible to go below 70 deg for 3 teeth case [image: Screenshot 2024-11-23 at 12.32.55 PM.png]