I noticed that too when I was researching the mesh screens! Long ago I was researching these for designing a custom photoetch mask to make scale screens for my AMT Command Bridge model kit. Your thread revived that research and inspired me to (maybe) include one or two mesh screens somewhere in my remodel project. I haven't decided yet on a location or even whether it will be doable - probably somewhere under the desk if I do. I already have your Thingiverse "Windsor" grille file downloaded and another website bookmarked where similar grilles are sold, in case I decide to include this detail.agreed. when I researched the mesh panels used under the workstations surrounding the Enterprise bridge I noticed that the mesh used on the fan made show was quite wrong, compared to photos of the original. I designed 3d printable mesh squares that could be glued together to make a single panel the non-screen-standard size that I needed for my of workstation build.
I think you might want to revisit your 3D file, though. The original screen appeared to have the horizontal lines slightly wider than the vertical lines, and in your file all the lines are the same width. Here's a pic from "Balance Of Terror" where you can see an example:
The vertical lines look to be the same width as the "diamonds" and the horizontal lines seem to be significantly wider. Although your mesh is very good and a much closer match than what was used for the TOS Set Tour and "Star Trek Continues", it doesn't have the distinct "rows" look of the original:
Have you made any further progress on your office project? It was one of the motivations for starting my own project and I'm interested in seeing how yours progresses.