Revision 2.0 of my original screwless design for a 60% keyboard case
I printed this in PLA. You may get the original screws to fit in the holes, but they are a very fine thread. I had more luck using some other screws I found with a more aggressive thread. It should fit pretty tightly regardless, so you may not even need screws. This has been tested with a Pok3r, but should fit other 60% keyboards as long as they use standard dimensions.