Hello, I recovered this (double) spiral from an AutoCAD file. But there are corner points and small deformations that bother me to use it at my convenience.
So, my question and the next one: would there be among the experts, somebody who could give me the right function to enter in "_FGraph3D", to get this kind of form, because it is beyond my competence!
There is also maybe a possibility with the "Nodeeditor" but I do not know it either.

thank you in advance
- Zooen