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As with any print, you need to think about the best way to lay the model down for adhesion and the fewest supports possible. A quick rotation in Cura (or other slicing software) will allow this model to lay flat and print without any supports.
@Cibonacci - in Fusion360, you can reposition the axis by right clicking on the 'cube' in the upper right corner that shows which plane you're on and resetting the plane to whatever the model is supposed to be facing. Nice work and thanks for sharing it!