Remove Non-Manifold

The term Non Manifold refers to geometry that doesn't exist in reality. Technically, this is often edges that are part of more than two polygons. In such cases, geometry is generated but a surface cannot be created for numerous calculations. This affects Phong shading, for example, but also subdivision via Subdivision Surface algorithms.

This Node's function makes sure that congruent new points are generated in these regions from which independent polygons can be created that don't have to share edges multiple times. All polygons that share the same edge will no longer be connected to neighboring polygons.