Hi!

When subdividing a triangular prism (extruded polyline triangle) like this one



Then there are notable creases:



When separating the surfaces then you can see that the control points are not well set for curvature continuity.



Any chances to get rid of those crease?

There are no such creases when subdividing an extruded rectangle (box).

I'm using Max Smirnov's "Subdiv_beta9.zip".

Any feedback is highly appreciated!

TIA and best regards

Bernhard