Thats not a knife, this is

Click the "View on Sketchfab" button above to visit the original model page on Sketchfab. You can download the STL file directly from the creator's page.

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.

This is a premium model priced at on Sketchfab. Premium models often include higher detail, multiple parts, and print-tested files.

Check the license (see original page) on the original Sketchfab page. Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer.