PetruziaOffice is my biggest 3d printed handwired mechanical keyboard (yet). The goals were to use the most of the usable pin in a pro micro controller but keeping the keyboard printable in a 22x22 cm printer plate.
The clip in the back is optimized for this tipe of promicro (the one with the type C connector): aliexpress

You will need:
| x1 | Pro Micro |
| x4 | M3 x 6mm screws |
| x4 | M3 threaded inserts |
| x4 | 10mm rubber feet |
| x5 | 2u plate mount stabs |
I used the qmk firmware and this guides (guide1, guide2, guide3) to build the keyboard and the firmware
The author marked this model as their own original creation.