Middle Case for the Cartel Contra keyboard

Middle case layer for the Contra keyboard. Designed to sandwich between the bottom and PCB layer of the case. Height is 7.94mm which fits easily between the two layers.

The part was designed initially to diffuse the LED under glow. As a secondary feature, it also adds support to the PCB layer around the edge of the keyboard. This additional support prevents some bowing/bending in the middle of the board providing an overall more solid feel.

Additional design features:
- Low section in th