Original Contra 40% keyboard kit comes with 9mm brass standoffs and plane acrylic bottom plate that makes height of keyboard little bit too tall for me. So I made this case.

Printer: AnkerMake M5

Printer Settings:

Rotate the model around Z axis approx. 45 degree.

• Perimeters: 3
• Infill: 50%
• Support: yes
• Skirt and Brim: No

Assembly:

Just follow step 1 to 7b of original instructions (https://imgur.com/mzzHe1Z).

USB Type-C version of pro micro is recommended, so that the USB receptacle's edge and outer wall of case will align, as shown in the attached picture.

After that, remove spacers then install PCB to the case.

Do not skip step 5 like me, otherwise head of screw may be stuck on top plate and cannot install PCB to the case.