Mid-fuselage ribs primer and riveting

I deburred all the mid-fuselage ribs to prepare for primer, then primed them:

Priming various parts including mid-fuselage ribs

Some primed mid-fuselage ribs

I riveted the outboard seat ribs and their intercostals:

Outboard seat rib

Outboard seat ribs fully riveted

then the inboard seat ribs:

Inboard seat rib partially riveted

Inboard seat ribs clecoed to aft center section

I haven't touched the bottom skin yet - those are the holes I'll work on after primer, to ensure exact alignment (this is too many interlocked parts accumulating small differences in thickness between the plastic and the primer). This means priming the rest of the ribs, which in turn means defining what modifications to them I need for the conduits.

Time lapse:

Total mid-fuselage ribs rivets: 132
Total mid-fuselage ribs time: 31.9h