Right. So, I'm finally coming back to Windows (sort-of) and Poser (sort-of) after a solid stint in Mint 13 building my own Blender from svn and learning all about Boost and OiiO and CUDA and why OpenCL will take a while getting rolling in Blender (AMD isn't sharing their code, which is idiotic, they're going to lose Blender Cycles people left-right-and-centre because CUDA just works).

So, I'm going to have a play with your script again, RedDog9 and see how it plays in 2.64.9 (build 52402, which I compiled last Tuesday).

I have to say: I love Cycles! I love the fact it's so extensible... it's growing so fast, people are creating materials for it so quickly, it's hard to keep up. I've done some messing around in it, but I can't say I've been all to productive: even though I've coded materials in Python/Matmatic, I really don't have the conceptual grip on it KobaltKween has  - not a thousandth of it, really. And having those concepts down would really stand one to good stead in this case.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks