This morning I cleaned, and primed all the internal structure. I’m using a self etching primer that’s super easy to use. I also primed the rivet holes of the interior of the skins.  

 
The paper used to ship the parts is perfect for painting on. I then used a heat gun to dry the primer a little quicker. 

I then began to rivet the rear spar to the reinforcing bars.  

 
This is the first rivet set in the spar, and thus began the riveting! I will spend many days in this position for riveting  

 
Here’s a close up of the shop head of the rivet, once the gap on the squeezer was set for this rivet length, it was perfect rivet after perfect rivet.  

 Tomorrow I’ll begin riveting the skins.