A stereolithography(STL) file containing a human lumbar spine model ready for medical 3D printing. The file was derived from a CT scan DICOM study. The resulting DCM file was converted to an NRRD file. Then a free online tool, available on embodi3d.com, called democratiz3D was used to convert this into an STL file. This spine STL file is part of a large collection of human anatomy 3D printable files. The orignal spine STL bone file is available for download.