Inluded are .dxf for laser cutting, .3mf for printing and .f3d for editing.
The polygons on the A/B motors prevent heat build-up.
The remaining polygons are for the internal MCU and PI fans.
The additional 40mm fans provide even more air for cooling the A/B motors, Pi and MCU.
The other holes closer to the fan and in the middle are for cable management
The author marked this model as their own original creation.