Hi,

I'm studying MoI and created some sort of grip with a 2-rail sweep and a scaling rail. Then I copied the grip's profile ellipse, placed the copy above the grip, and extruded it to try a blend surface between the two items.

But the result shows a strange artifact at the sides. Why?

My guess is that the blend surface can't handle the sharp edge at the side to calculate a proper continuity?

The 3DM file is attached, and here's a screenshot:



Thanks in advance for your help,

Metin