Well since the left wing tank is done and I don't have time in my sessions before work to finish the right tank baffle installation, I moved back over to prepping the left wing for skinning. I work in sections just like the skins. There are two skins (top/bottom -inboard & outboard) on each side of each wing (L/R). So I deburred, dimpled, and countersunk the left wing upper surface inboard part of the skeleton. Good progress and easy work. Hopefully I can move back onto the right tank this weekend and finish it up.
Deburring one of the rib holes.
Dimpling one of the rib holes with the hand squeezer. This allows for flush riveting.
Countersinking the holes in the spar to accept the wing skin dimples (the spar is too think to dimple)