Sharktooth grill and 3d print. I had a thought.....

I was curious if anyone was into 3D printing and had a thought. Could a mask for spraying the black on the fins of the Duster sharktooth grill be made? Even if the mask was only for one or two sections of the fins to be painted at a time. I think this would be a useful tool and may look into 3D printing if this is possible.