Thingiverse
Thread Borer - Handle Insertion Tool This object was made for the insertion of 4-40 thread cutters for the purpose of hand-threading through-holes or pilot holes and comes with a larger piece for harder materials that need more torque to cut through.It is recommended to modify the file as needed and provide a 0.15-0.20 mm offset of your measured mating surface to adapt the design to your own needs.My boring tool piece had a width of 2.74mm, so the offset to the cutout profile it had, created a square with a width of 2.89mm.
Direct link to the original creator's page
Thingiverse
Thingiverse
Thingiverse
Thingiverse
Thingiverse
Thingiverse
Click the "View on Thingiverse" button above to visit the original model page on Thingiverse. You can download the STL file directly from the creator's page for free.
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, this model is available as a free download on Thingiverse. Some creators accept tips or donations.
Check the license (see original page) on the original Thingiverse page. Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer.