GrabCAD
This metal device featured a plate that sat below the victim's jaw, which was connected by a frame to the head cap. As the torturer slowly twisted the handle, the gap between the head cap and plate decreased, crushing the skull, including the teeth, mandible and facial bones, and ultimately inducing death. Even if the torturer stopped before death, permanent damage to the facial muscles and structure would have occurred. The victim's head would slowly be crushed, killing the victim, but not before the victim's jaw had been crushed, and their eyes may have possibly extruded from their sockets. To aggravate the pain, the torture master would sometimes amuse himself by tapping on the metal cap with a small hammer.
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, SOLIDWORKS, STEP / IGES 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.