This 3D model form at 3dm.
You can easily make the STL/OBJ file and prepare for printing.
Native Formats: 3DM (Rhinoceros 3D, filesize: 94 MB)
Exchange Formats: OBJ (OBJ, filesize: 119 MB), FBX (Autodesk FBX, filesize: 139 MB), STL (Stereolithography, filesize: 119 MB), 3DS (3D Studio, filesize: 99.4 MB)