It wouldn't print. 3D printers do a check of the file before trying to process it. It's not a "solid" object, basically, and just surfaces with no volume. It's that volume that the printer's logic uses to compute the internal ribbing and outer shell.What would happen if you just printed it as is? Itd have, I guess, cavitation in it? Like where ever theres blue it wont print?
Is it something that could be fixed after they were done, along with their painting?
As I'm "smoothing" the surfaces there are some minor variations to the surface that a simple sanding will fix. If a 3D printer was to run these off there would be a fine texture inherent to 3D printed objects that would need to be smoothed anyway. I think the ultimate plan was to 3D print an engineering proof to possibly use as a template for a new injection mold? But I don't have access to that kind of tooling...
Oh woe is me if ever I decide to scan other "hard to find" parts to reproduce!
Though I have a feeling this would be going a lot more smoothly if I had done a better job of aligning my 4 scans when I merged them down for the poly model...