Drilling, trimming 1 hour

Tonight I trimmed the lower fuselage skin between the firewall and the landing gear. Then I clamped it to the longerons and drilled holes through the longerons. I removed the skin and deburred all of the holes and files the edges smooth. I will dimple the holes in the skin that fasten to the longerons next and countersink the longerons to accept a solid countersunk rivets to hold the skin until I fasten the side skins