Spent almost 3 hours deburring the leading edge skin, all holes, both sides, perimeter all around. Spent about 1/2 hour dimpling the skin. Spent about 15 minutes to scotch brite the inside of the skin and spray primer at the rows of rivet holes. Took a few minutes to install the pitot/static tube nutplates inside the skin. Spent about 15 minutes to put a few of the rib-to-main-spar rivets in place.