A pretty simple idea here. At my workplace we needed to pull a cRIO from one of our test setups to use elsewhere temporarily, but didn't want to take the whole setup apart, so we just pulled all the C-Series cards out of it and left them hanging out there with all the wiring still attached. This led one of the other engineers to come up with the idea of putting some dust covers over them to protect their interfaces instead of just leaving them exposed.
I pulled a CAD model of one of the cards from the NI website and used it as a kind of virtual mold to create a minimal 3D-printable form-fitting cover that slides right over it. So now we can just make as many covers as we need. Wanted to share for anyone else who might find this useful as I haven't seen this kind of thing anywhere else around.
The zip folder attached includes a STEP file ready to print and also the Solidworks part file to make adjustments if wanted. Editing just the "Thicken1" feature in the Solidworks file will parametrically adjust the whole thing for a looser or tighter fit (I found 0.012" was the best fit, 0.015" was too loose and 0.010" or less was too tight). Separately you can also play around with the surface offset distance for the 2 indentations on the outsides to adjust how tightly the card's prongs will grip it.
