Visibility of lines on an evenly extruded surface after rendering

[Anonymous]

I had made a family file of country map and loaded the same in project file. The map contains demarcations of states & cities (I had extruded separately each regions). So, after I loaded the family in a project file and rendered it gave a smooth even surface finish (since all the surfaces are extruded for same depths). But, I was hoping for a way to keep those region lines visible even after render.
Attaching the Revit family file, rendered image & image of region lines required to be visible
Help would be really appreciated!  

[syman2000 · Accepted solution]

Sadly those line won't show in rendering if extrusion are at the same height. If you want to show those edge, you may have to edit and offset the edge away by 1.5mm so you get that reveal look.

If you want hard edge, you want to duplicate each of the state edit it and do offset 1.5mm. Afterward change the edge from 0.125m to 0.13m to give it higher depth. Afterward apply black color material. When you render those black edge will show thru.

[RDAOU · Accepted solution]

@Anonymous 

If you took all the trouble to extrude every state why not give it some texture as Slyman stated above or why not give it different material (can be same color different shades)

If you want it flat with just lines you didn't need to extrude state by state.

You should have united India in ONE extrusion and used the Map showing boarder lines (which you already have). With a little bit of photo editing, you can apply the map as a Decal image to that surface.