Jar lid 4 thread

Jar lid to fit (out of the box), 100mm (4 inch) diameter jar neck which has four 180 degree screw threads at 30mm (1 1/4 ") pitch or scale or rebuild to your requirement.

Supplied with the Blender pre-assembly file as a simple "learn Blender" project for you! To adapt the lid to your requirements, install Blender 3.80 (or later) and open the jar_lid_pre_join.blend file.
Select View | Front (or number [1] key on keypad).
The top object is the cutting tool comprising a 51.5mm diameter cylinde