I managed a couple hours in the shop today, even though I was as sick as a dog. In between frantically running to the bathroom to pray to the porcelain god, I did get a couple things done. I planned to get some of the right HS done today, which needed more prep on the skin, and then some riveting.
First, I cleaned and primed right HS skin interior.
After flipping, priming the other side, and letting it dry, I decided to fix some of the bad rivets from the other day. They look better now.
Then, I grabbed the right HS ribs and front spar and clecoed some of them to the left HS. I
I started by riveting the front spar to HS-710 and HS-714. This time, I was following the directions a little more closely. All of the rivets today turned out great. I had switched from my offset cupped set to a straight set, and they were all perfect. (Don’t mind the two empty holes on the far left, I remembered them later and shot those rivets, too.)
Then I riveted HS-405 and HS-404 to front spar. Again, no mistakes. Then, I turned back to the skin once it was dry. On the left side, I waiting until riveting HS-707 and HS-706 to the skin before I devinyled this area. On this skin, I figured that I wouldn’t be holding a bucking bar (that I could drop and scratch the skin) in this area, so why not take the blue off before making it hard on myself. Much easier this way, but I could only do it here. (I have to admit, those nice straight primer lines make me happy.)
The directions have you cleco in HS-707, rivet to the bottom skin, then cleco in HS-706 and HS-708 (to help the skin take shape and sit tight against the aft holes of HS-707), and then rivet HS-707 to the top skin. Just like the left side, I needed AN426AD3-4 rivets where they sometimes call out an AN426AD3-3.5.
The, I let this happen.
What? Don’t see anything? Try this angle.
It was completely my fault. I was getting confident, and was holding the rivet gun with my left hand. I had the pressure set near 50psi (I usually use 40psi for the AD3- rivets) and the gun got away from me.
I stared at it for about 5 minutes, realizing that it was probably okay, but would essentially force me to bondo and paint the tail, which would not have been the end of the world, except I still might want to polish the airplane.
I decided to drill out the 4 rivets I had set in the bottom skin to see if I could help it any with a flush set from the back side. I managed to get my backrivet set in there a little, and it helped, but I came inside as I was getting chilled and frustrated.
Later, I realized that I have a c-frame, and with two flush sets in there, I may be able to very gently hammer it back into shape (or at least get it close). I’ll have to re-dimple, too, because I flattened out the dimple while trying to fix the dents.)
Maybe this weekend I can fix it up a little and keep going.