Countersinking the main spar.
2h
January 21, 2025
Some amount of preparation work today.
First, I removed the top skins from the wing. Then I countersinked all the holes on the main spar for the top and the bottom skins.
A closer view at the countersinks.
The foremost rivets of the main ribs behind the fuel tanks are covered by the fuel tanks, so I countersinked them for the rivet rather than for the "structure", and installed the rivets there.
Finally, I riveted nutplates for the inboard Z-bracket of the fuel tank (they go on the main spar rather than on the Z-bracket.
