I just modelled Human Skull with logo 3DPS (3D Printing Specialist) just for fun.
It`s easily 3D Printed with any 3D printer.
Native Formats: F3D (Autodesk Fusion 360, filesize: 5.93 MB)
Exchange Formats: OBJ (OBJ, filesize: 19.1 MB), FBX (Autodesk FBX, filesize: 6.94 MB), SAT (3D ACIS, filesize: 20.7 MB), SKP (Sketchup, filesize: 27 MB), STL (Stereolithography, filesize: 67.1 MB), IGE (IGES, filesize: 24.1 MB), IAM (Autodesk Inventor, filesize: 12.5 MB)