Spider coupling ("Lovejoy type") for shafts of stepper motors or other electric motors. It allows to quickly attach or remove evices to a motor and can cope with small axial or radial misalignment of the axles.
Created as a fully parametric design in Python, using the open source CAD library / system [CadQuery](https://github.com/CadQuery/cadquery).The source code of the design is available from [here](https://github.com/tanius/smallopticalsorter/tree/master/mechanics).