This is a sandwich case for the Reviung41 keyboard.
The case is in three pieces: the top half (including the switch plate), the bottom half, and a triangular diffuser that sits inside the top, over the central LED.
The hardware required is slightly different than the standard Reviung41. 11x flathead (i.e. countersunk) m2x12mm screws, 3x m2x10mm screws with normal heads (for the pro micro cover), and 14x m2 square nuts are required.
The countersunk holes in the top plate allow the flathead screws to lie flush with the top plate surface.
The top half should be printed upside-down. The bottom half should be printed right-side-up with supports. It works without supports, but the square nut-inserts will likely be messier.
I recommend printing the diffuser and bottom half in transparent PETG and low infill, to allow for the LEDs to shine through. I used 5% infill for both, though you may be able to print the diffuser with 0% infill for better results. I also printed the first few layers of the bottom half in white PETG, then did a manual color-change, to increase the amount of light reflected off the bottom of the keyboard.
I've included STEP files and Solidworks 2024 files, to allow for modifications.
Note: I found some of my switches did not click into the plate. It's possible this is because the plate prints slightly thicker than the nominal 1.5mm. Reducing the plate thickness dimension slightly could help improve this.
This design was loosely inspired by a model made by Tenochticlack.
The author marked this model as their own original creation.