Small button not working

After several attempts, I have concluded the design of this customizable spool that solves several problems for those looking for a simple way to wind custom-sized transformers. ATTENTION; All sizes are POSSIBLE Obviously, you need to have openscad to modify the file, but as many know, openscad is free and perfectly capable of creating .stl files. In the Openscd project, only the parameters need to be changed, which are quite intuitive. Brief summary. x y h = refers to the dimensions of the steel laminate core Core thickness = refers to the thickness you want to support the winding. Flange margin = refers to the maximum opening that the winding will need to enter between the core and the laminate wall. I'll leave the other controls for you to discover. Attention: after creating the .stl file, you must divide the objects in order to position them correctly on the printer's build plate. I haven't yet tested materials to see which might be best, but you need to consider costs and I wouldn't recommend very expensive filaments. I hope to receive positive feedback. Hello to all makers PS. Let the whole project cool down well. The measurements are very precise

The design I produced is a hook located in the toilet's flush tank. In fact, there is a small button and a large one that manage the water flush. This tiny hook is now worn out after about 10 years, but as often happens on the market, the single part does not exist, and you have to buy the entire bell. I hope I have been useful to someone who does not want to spend 100 USD