It's been my understanding that Corona Curvature map can be used like the AO map, but it looks directly at the mesh curvature instead of emitting beams from the mesh and seeing when they intersect it.
So I'm trying to make some steel darker at the concave portions of this object, and I have the curvature map plugged into my material with a red color plugged into the Concave Color input. The max distance is set to 1/8" and the other settings are default. I can see the steel being red right up to the point when the actual curvature begins, then it appears to become lighter at the portion that begins to curve. Is there a way to make it shaded consistently at the curve? The editable poly has no borders, so I don't think it's an issue with the geometry.