The purpose of this model was to create a cool wheelchair controller knob for my friend who had lost his original one during a trip (as seen in the image gallery). If you are using it for the same purpose as I you might need to drill the hole a little bit larger according to your needs (In blender it is 5mm).
You can also use the Skull_base_Mesh_sculpt files to edit the skull according to your need. This has all the skull elements separate and the head itself those not have a hole in it.I provided these files so you can: - change size of the hole by adjusting the cylinder and using boolean to cut out the hole. - use it as a base mesh for skulls in your projects.
The sides of the head have a bit of a pronunced indent so it would be a bit more ergonomic.
The Model is small and not retopologized, however, the STL file has been optimized to contain as low of a polycount as possible.