> Seems only circular surfaces resist :)

Hopefully not for long, n-gons should clean those up too.


> On Wings3D I have some curious external edges

Yes, I get those in Wings3D even when exporting using the current beta release that only has triangles. I also tried exporting that shape to .obj from a different program and the problem in Wings3D repeated. Seems like maybe a bug in Wings3D when reading an .obj that has more than a certain number of points in it?


> On Anim8Or only curious inversed normals on the Cone :)

I think I have fixed this - it turns out that the cone was outputting quads with 2 points pinched together at the top. Thanks to your report, I have fixed this so it will put a triangle in that case instead, which cleans up some problems like this.

- Michael