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I think, with the advent of 3d printers, cnc mills, etc, software people like myself are finally starting to grasp the complexity and difficulty inate in the production of physical objects.
This realization comes through the same long and expensive process of trial and error that you experienced, but often without a successful ending like yours, so this is great to see!
I've been going down a similar path, trying to create a smaller-scale connector for a regular dodecahedron. So I can fully appreciate how impossible these connectors are for CNC Milling/resin casting or injection molds.