I've been doing viz work for almost ten years, and I've never had the need to get so complex in the mapping of different elements.
For the most part, I get by with default mapping coordinates or simple planar or box mapping coordinates.
If I have an object with many different sub materials, they often share the same mapping gizmo. Use of the map scalar space-warp and the tiling and offset spinners in the material editor is also very handy.
Can you give a more detailed example of what the objects are and how it is modelled, as well as the type of material that it requires?
-john manning
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