I modified the “No fan, no bottom hex” version (only that one) to increase the diameter of the screw holes to 3.5mm and add space for threaded inserts (M3x5x4) in the bottom of the model.

Print bottom down with supports (for the overhang created by the difference between the diameter of the screw hole and the threaded insert hole.)

You'll also need two of the clips from the original designer's model.

I made mine with Bambu Lab PETG-HF in red.