Hi Rogurt - Filleting is not really Rhino's strong suit either, if more robust filleting is your main concern probably something like SolidWorks or Pro/E would be the choice.


> Maybe there could be some sort of debug window or colored display of surface curvatures which
> gives me a clue that there might be a problem. So I´d be able to solve things on my own...

The problem is that it's pretty unlikely that suddenly flashing a bunch of colors on the screen would make you immediate go "oh, it's the curvature of this surface that is causing the problem"....

- Michael