Brief Description: Rivet stringer web assembly and dimple ribs
The HS-00914 stringers for the stringer web assembly were countersunk and I applied Alodine to the bare metal in the countersinks for some corrosion protection. The two modified HS-1004 inspar ribs and HS-00916 stringer web were riveted and then stringers were then riveted to the web. You have to be careful to get the parts oriented correctly at this point so the entire assembly fits into the skins properly.
The rest of the ribs were dimpled using my substructure dimples. There are a few holes on the modified inspar and nose ribs that do not received a dimple. As I expected, the primer on the ribs I did last weekend didn't hold up around the dimple and it flaked off. No big deal because those ribs were treated with Alodine. The ribs I did with my Prekote process held up well under dimpling. Surface prep is everything.
I needed to finish the rear spar assembly with the mistaken countersink in the doubler. I was about to double flush rivet when I noticed something odd. There are a couple of holes on the doubler that needed to be match drilled to the corresponding holes on the spar. All I saw was green metal through the spar hole. I was pretty sure I did all the match drilling that was specified early in the HS build. Looking at the doubler and I saw the problem. I did do the match drilling, but when I riveted the doubler I oriented it upside down. The holes were match drilled, but two of them weren't lined up. Ouch!
The fix is easy. About two dozen protruding head rivets need to be drilled out and the doubler reinstalled in the proper orientation. I stopped working at that point so I could come back to it fresh next session.
