Curvature (Sobel)

This produces a really nice and clean result! Great job! Might be nice to have a Normal Format switch and Intensity Scalar

This node only outputs an accurate Curvatrure from a DirectX Normal Map. Please add OpenGL/DirectX options.

How can I use it in Substance Painter?

Very Nice! Built this into a custom generator, the results are much cleaner than the built in. I was creating my own curvature in PS, but now just use this, Thanks!

How to install?

How do I import it into Substance Designer?

https://www.youtube.com/watch?v=-vRJVZs2OYo&t=0s
shows how to bring it into your SD library.