Today was pretty productive. First, I scuffed the fuel tank skin stiffeners.

...then deburred the right tank skin, used the seaming tool along the edges, and scuffed along all the rivet lines.

Lastly, I dimpled the right tank skin. Actually I dimpled the entire skin except for the baffle holes. I'm pretty sure that I'm gonna go back and dimple those too, but I wanna try the custom dimple die from Cleaveland before doing that.