This is the improved version of https://www.printables.com/fr/model/495780-fixing-lug which came out to be too weak for my use.
I did print it in PETG with a 0.4 nozzle, 0.3 mm layer and 100% infill.
But it is an easy print, you can change values to match your needs.
For better resistance, print it with the smaller face down.
For the sake of completeness, I did add the source files.
Python code generate SCAD files that you can then convert to STL.
You need MuSCAD (https://gitlab.com/guillp/muscad) to be able to run the Python code (pip install muscad
).
The author marked this model as their own original creation.