I quickly created a draft model of my object in Fusion in order to get an idea of the shape, form, and dimensions of my object. This allowed me to start to figured out how all the components might fit together and how that might change the overall form of the object.
I quickly redesigned the magnetic differential to be able to print and test the effect. I used magnets on the outer dial and steel nuts on the driven inner rotor.
I started to redesign the parts of the system to mount together in a logical way. I added mounting tabs, mounting holes, and fasteners.