created for a short time, used an addon called BoxCutter a couple of times
STL (Stereolithography, filesize: 4.02 MB), OBJ (OBJ, filesize: 4.02 MB), BLEND (Blender, filesize: 4.02 MB), DAE (Collada, filesize: 4.02 MB), FBX (Autodesk FBX, filesize: 4.02 MB)