Just an hour or two tonight, and only managed to get through deburring the rear spar. Scotchbrite pads for the most part, across the drilled holes and in the corners of the harder to reach spots. Edge deburring tool and the Scotchbrite wheel took care of the edges. In the process, I found three holes that I hadn’t drilled in the spar and doubler. Will need to drill and deburr those tomorrow night. Hopefully one more evening and I’ll have everything deburred. Then it will be dumpling and counter sinking, then I’ll prime, and then start riveting it all together.