February 5, 2008 ... The channel material arrived from the Sonex factory last week, so I fabricated, alodined, and assembled a new left rear spar extension piece. I also deburred and alodined a new #12 aft rib. With everything cleaned up and clecoed the wing was looking a lot better. Next step... updrilling and deburring the rib mount holes.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

February 9, 2008 ...  My entire time today was spent updrilling and deburring all of the rib mount holes and spacers.   I also updrilled the forward ribs to accept the rubber grommets and tubing that will carry the wiring to the  landing light, and Nav/Strobe lights.           

February 11, 2008 ...  Finally, the big moment  is here ... I get to rivet the ribs onto the main spar. The drawings call for CCP-44 rivets throughout the length of the main spar, except at the gussets (those get CCP-46). I have decided to use CCP-46 rivets all the way across. I wasn't completely satisfied with the small size of the shop head on the pulled CCP-44 rivets. The photo to the left shows the CCP-46 shop heads. I  am pulling all of these rivets by hand due to the close  proximity. to the rib. 

 

February 18, 2008 ...  Today I finished riveting  the ribs (except for the root ribs). Riveting the ribs to the rear spar was a snap compared to riveting to the main spar.

February 25, 2008 ...  I leveled and squared the wing structure on my bench and attempted to fit and drill the root ribs. I lined up the forward root rib by sliding  a 1/4 inch steel rod through the machining holes on 3 ribs and the root rib. Then, I adjusted the forward root rib for proper vertical placement with the spar caps. That went pretty well.

When I attempted to place and drill the aft root rib, I discovered that I had mis-measured the holes closest to the main spar., when fabricating  the root rib brackets,  As a result, the rivet holes landed too close to the forward edge of the aft root rib. For some reason, I made the same mistake on the rear root rib bracket on the right wing. I think it will be easier to re-make the root ribs and add 3/16 of an inch on the front of the rib rather than re-make the root rib brackets with all of  the crazy angles and bends, and re-drill the holes.
I once heard that most first-time builders end up building  1 1/2 airplanes before they finish their first project. I am beginning to believe it!