The end result is a small void in your finish. I did a close inspection of the filled surface and use a small paintbrush to fill every void I could see. Although this seemed like an extravagant time consuming bit of work, I wound up with a final finish that only had a dozen pinholes over the entire fuse. These were easily fixed during the final sanding phase. Painting the entire fuse in one session was the goal.
Some factories mount the fuse in a rig, which allows free rotation along the fuse centerline.
We used a similar concept and fabricated a cradle that gave use enough rotation so we could spray all surfaces non-stop. A small line at the tail allowed the entire fuse to be suspended approximately 2 feet off the floor. A weight hung off either side of the rig caused the fuse to list 45 degrees, which allowed painting of the top and bottom surfaces. In addition, we were able to move completely around and under the fuse and not worry about tangling hoses in the supporting fixtures. The actual painting process was pretty anticlimactic.