Cross Section Highlight

I have a drawing that I am rendering that has a cutaway section of several rings around a cylinder. Most of the materials are chromes, and a couple plastics.

The desire is to place different hatch patterns and a boundary on each of the cut sections. For example, either a yellow or red hatch over the cross section of a brass ring.

I am finding out how much I really don’t know about materials and shaders. There have been several attempts, and multiple approaches that I have tried over the last few days.

If anyone has suggestions for how to do this, I would be most appreciative.

I use Brazil but with no file uploaded can’t be of much help from this end.