Hi Micha,

re:
> (9) rotation object <...>
> Interesting is, that the Rhino command _QuadrangulateMesh can
> be used to eliminate some triangles. I have the feeling, if
> _QuadrangulateMesh works, than the mesher created to much
> triangles, more than necessary.

Some good news on this one, I was able to make a minor tune-up to preserve more quads in this situation.

In the next v2 beta this one will now get all quads, here is a screenshot of what it will look like:



- Michael