To fully build the model you will need to print 4 each of Color Wheel, and Door Dial individual base parts.
The base part has cuts outs so you can glue them together to make a 10in circle, you then glue your Color Wheel in place, along with the center piece and Arrow. This model does not spin, but with some modifications you could make it spin. I did hallow out the center piece.
The author marked this model as their own original creation.