This is a remix of lionpants' original modmic mount, but adjusted for M3 10mm cap head screws
4mm counterbore for M3 10mm cap head screw
4mm captured nut (extended from 2.4mm) for M3 nylock nut as opposed to jam nut
I printed both models at 0.2mm layer height
It should also be possible to use either of these models with the original, for a countersunk/nylock or cap head/jam nut configuration. YMMV
The author remixed this model.
4mm counterbore for M3 10mm cap head screw
4mm captured nut (extended from 2.4mm) for M3 nylock nut as opposed to jam nut