These are the same LMN keycaps available from the LMN GitHub, but with the icons booleaned into the caps for multimaterial printers. I have included the combined .obj file, as well as one .stl for the base keycaps without the legends and another .stl for the legends without the keycaps.
There are two versions, one with support lines on the bottom for better bed adhesion that need to be clipped off when done, and another version without these supports.
I've also included my Blender files for both versions and files marked as “_reexport” saved directly from Prusaslicer if the originals are an issue.
The author remixed this model.
Took the legend files and added them directly to a key model.