Fischertechnik curved leaf spring

A spring element that in its original form was intended for a completely different project and has been in service there for quite some time. I had tried out the geometry of that project partly with FT parts. So it made sense to make a version that fits into the 15mm FT grid.

For your own experiments I have attached the FreeCAD source file. I am always grateful for improvements, I am not a CAD professional and my tinkering is mainly done by trial and error ;-)

https://youtu.be/-eEpbysh7wY