I really like that you're aware of the iterative process and are willing to improve your model. I also appreciate the level of research on functionality, interactivity, and form. I like that you tried working with magnets—great choice! Maybe try using lighter materials than 3D-printed components for the moving parts, and keep the 3D printing for the more robust areas of the project. Overall, great model and very clean. I love how well the model describes the project.