Extruding a polygon into another or connecting polygons

Hi Will,

apologies for the late reply. Yes, I did try playing with the distance factor: I put in a kind of large number (5000) for which it would never happen that two lines are too far apart to connect, but I am still getting some weird stuff going on.

These are my ellipses (as displayed in ParaView):

Which seem pretty regular to me. Every single one of them has 18 points.

Once I apply the filter, I see this:

In which it appears that the mesh gets broken in some places somehow (i.e., look at the darker triangles at the top, also in this zoom in:

I am not sure what the problem may be though. I’ll try and investigate by pair of ellipses, but any suggestion you may have is most welcome…

Thank you again.

Andrea.