If your collection is “radial” meaning that you can use a guide curve then the classic approach is to test the DotProduct of a U/V dir vector (at some surf point, say 0.0) VS the tangent in the guide crv (at a point closest to the surf point) and if is < 0 then reverse the Surface in U/V (that said I’m not sure if this is available as component).
In fact I have a very similar thingy but is carried over solely via code. Notify if you think that a similar solution could be helpful to you.
Hello Sir,
I have a similar problem, all but one surface has a flipped normal.There the closed polysurface , I create is also flipped.How can I make sure normals are in one direction.