LightWave objects (.lwo) files may be exported or converted to several other CAD files, including the STL file format used for 3D printing. As much as we could gather, lwo to stl conversion is typically done for the purposes of printing model using a 3D printer.
Open LWO file Open STL file3D viewer and converter with huge file type support
A CAD 3D geometry translation software
A free online 3D model conversion service
A 3D CAD translation software