I applaud Cousins efforts, but fear for the outcome, it is very hard to successfully persuade a company entity to do what it has repeatedly refused to do.
On alternative supply options, rather than printing, many parts could be manufactured by laser cutting from sheet material.
Clearly, this is limited to parts that are planar, but many parts are flat.
I got a new hand set cut for a watch a while ago, and cut to minute precision in stainless steel, a single part was quite expensive (due to set up costs), but they were extremely cheap after that (single figures of pounds).
Here is a photo of the sample hands they produced for me, with the broken one that was being replaced in the tube at the top.
The precision achieved was excellent, bear in mind that the edges of the hands are 0.2mm wide.
I was especially impressed by how sharp the internal corners were, on the triangle at the end.