Time: 3 Hours
I first worked on the tank stiffeners by deburring all the holes followed by scuffing the surfaces that will have tank sealant on them.
I then started the process of deburring all the holes in the tank ribs to get ready for all the dimpling that will be done.
All the rib flanges need to be scuffed for the tank sealant before I will dimple all the holes. Before I set out for that task I riveted the the fuel tank trap doors.