I tested the original model from “jack”.
But by my water tap, the spherical part in the middle, has a different diameter then the handles at the side.
Because of this the handle was a little bit loose.
I also wanted to adjust the length of the handle, so I added some additional parameters to the OpenSCAD model.
You need the OpenSCAD library from here like in the original model
A newer version than the official release version is required.
I have version "OpenSCAD Version: 2025.04.13 (git f8d680306)".
The latest development version can be found under "Snapshots" on the OpenSCAD website.
The author remixed this model.
Additional adjustable parameters are integrated.