It’s ok, I managed to get a version of Eagle installed and have generated gerber files; the PCB fab house accepted them, when I get the boards I’ll let you know if they worked ok!
Also ordering the 3D printed parts; the upper frame is fine, but the lower part I don’t think is going to turn out that great as I had to make all the cutouts into through holes to eliminate all the <0.8mm bits they reckoned they couldn’t print. I think it’s gonna be rather flimsy. Just getting them printed cheaply in resin for now, once I’ve got them, if I think it needs tweaking I might get them reprinted in polyamide.
I think the lower part needs to be thicker but without parts in hand I don’t know if that can work, so need the cheap prototypes before I commit to a more expensive print.