A printable mount taken directly from The Imaging Source's distributed STEP files for their USB 3.0 DFK or DMK industrial cameras. This is their model with the appropriate threads modeled into the holes on the underside (2x M6 holes and one 1/4-20 UNC as specified in their drawings). My only input to make this is adding the threads and exporting it as an STL instead of a STP, the model itself is straight from The Imaging Source's freely available models.

Prusa

i3 MK2S

No

No

100um

25%

To make sure the threads print usably, make sure you use a low layer height. I used 100um layers and got good results that thread properly to screws, but coarser layer heights may be quite hard to screw into (though the metal screws will self tap to some degree into the plastic).

Looks like the aluminum originals when printed in black.