Time: 6 Hours
Today my goal was to finish up both the left and right rear wing spars so that I could prime them tomorrow. This would allow me to prime them this weekend and have them ready to rivet next weekend. I have to be out of town to Wichita for a Bombardier safety conference. First up was to layout the all the parts for each side.
The outboard doubler is supposed to have a row of flush rivets that tie the doubler, spar and end rib together, the plans call for countersinking here. I have read several builders sites that have dimpled instead of CS’ing. I decided to follow suite as I’m not sure about the thin material. I will just have to remember to dimple the flange if the rib.
Once I had both the left and right sides done I cleaned up the shop a little to prep for priming. I debured all the drilled holes then hit everything with a Scotch-Brite pad. I bought a mini orbital sander from Harbor Freight and tried it here. The small pad has Velcro on it and holds a small square of Scotch-Brite pad really nice.
After the prep I cleaned everything real well with MEK and let them dry. While drying I cleaned all my tools and returned everything where they belonged. Then I hit the parts with primer. I will flip them over tomorrow and hit the other sides then.