I redid my badge holder w/YubiKey slot. With a clip it can now be more secure and since it's two parts that screw together now, you should be able to print it
...Plus at a higher quality (no overhangs at all). You will need 4 #6 machine screws at 0.25 inch length.
The dimensions of the card area are
92.55mm tall, 54.10 wide, and 2mm thick.
