Wing section 13 - Main Spar

 Section 13 was a lot about counter sinking and nut plates. I didn't take many pictures.

J channel are match drilled against the main spar
assembly, but they are used on the top skin. It took me
a while to understand that for some reason.

 

I got some help from my wife on the counter sinking task.

Instead of point priming the material revealed after
counter sinking, i primed the whole flange.

14 Wing Ribs

I've already started on next section. A few pictures below.