Hi Michael, I exported triangles at Angle = 10, DLT = .25. The shading artifacts are there. I used the Magnet "circle" setting with the radius matched to the headrest but pulled a lesser distance. It appears to torque the edge polys too much.

> If your polygons have too much variation between each adjacent one, that can tend to cause
> shading artifacts where the smooth shading trick does not work as well to make those flat
> pieces appear as if they were a smooth surface.

Leonard