The file 'Rhombus Cut In Spiral 3D Printer Model' is (scad,stl) file type, size is 54.4KB.
Inspired by:
https://www.thingiverse.com/thing:12489
I took the basic Rhombic shapre directly from there.
I decided to see whether I could do the spiral cut entirely inside Openscad.
There is at least one very interesting for loop.
I can hardly call this a puzzle though, it is trivial to put together.
As far as I can tell this method can be used to cut any shape into spiral quarters.
Rhombic270_V2.scad | 1.7KB | |
Rhombic270_V2.stl | 400.7KB |