GrabCAD
Objects created in Autodesk Inventor 2013
Exported as .stl mesh, converted to .obj in MeshLab.
3D objects assembled in DAZ Studio, rendered in LuxRender via pret-a-3D Reality with Image Based Lighting from a 360x180 degree HDR image.
I'll upload the 3D models after I've tidied them up a bit ; )
Direct link to the original creator's page
This model is published by its creator on GrabCAD. STLFinder only indexes it: the "View on GrabCAD" button above opens the original page, where the creator shares the RENDERING files under their own license.
This model is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
Yes, the creator shares it at no cost on GrabCAD. Some creators accept tips or donations.
Check the license (see original page) on the original GrabCAD page. Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer.