As shown in the attached image, I want the material shader to use the output of ColorRamp1 for one set of faces (the notched faces at the edge of the box) and the output of ColorRamp2 for the other set of faces (the flat faces of the box), based on some form of Face ID, used via the factor for the Mix shader.
Since both faces are part of the same object, Object ID does not work.
And since I am using only 1 material, Material ID does not help.
I don’t want to use two separate materials for the different faces of this box, because for most part the desired material is identical, with some variation added due to the ColorRamps.
Any help is appreciated.