If I were to do this again...
Posted: Sat Sep 24, 2016 10:07 pm
Finally got one wing closed up. This is the lft wing which has the spar plates on the front so the rivet holes are right there. What a pain to debur. I ended up using a small flat diamond file that had the tip broke off so I could use the end edge to scrap around the hole perimeter along with the filing.
If I were to do this again, I would get the spar rivet holes about a 1/16" further forward by shortening the ribs at the rear flange that much. This would solve two problems I had. It would get the rivet holes away from the web so the drill bit wouldn't touch it & give slightly better access for deburring. It would also get the LE skin forward slightly so that it wasn't so tight on the nose rib corners. I had bumps on the skin there. So I filed reliefs at the corners so the rib flanges could bend down somewhat.
Another thing I would do is bend the LE skins so they would closer match the curvature of the nose ribs. I'd try the vacuum bag method. Just relying on the rivets to pull the skin into shape just makes every rib visible where it is pulled tight and in between ribs it is fatter.
Here are some pics.
If I were to do this again, I would get the spar rivet holes about a 1/16" further forward by shortening the ribs at the rear flange that much. This would solve two problems I had. It would get the rivet holes away from the web so the drill bit wouldn't touch it & give slightly better access for deburring. It would also get the LE skin forward slightly so that it wasn't so tight on the nose rib corners. I had bumps on the skin there. So I filed reliefs at the corners so the rib flanges could bend down somewhat.
Another thing I would do is bend the LE skins so they would closer match the curvature of the nose ribs. I'd try the vacuum bag method. Just relying on the rivets to pull the skin into shape just makes every rib visible where it is pulled tight and in between ribs it is fatter.
Here are some pics.