Rubber seal is needed
Demostration video:
https://youtu.be/LDD02Nnn2Ng
Thread M24 and M28
Smooth and Thin Cone Version
Added a M24 mini version
Added new files with more definition (H) (supported Slic3r)
Added clockwise direction
Tips are welcome ;D
License:
Creative Commons - Attribution - Non-Commercial - No Derivatives