Prepping all of the parts for the vertical stabilizer for assembly.
All plastic is removed and parts are deburred then washed in in a diluted water mixture with simple green airplane wash using a red 3M pad.
Assembly of the aft spar and the doubler plates.
Up-sizing the holes to accommodate the bolts that pass-through to the M4 rivnuts.
I also enlarged the holes on the lower two rivnuts to reduce flexing on the internal doublers and improved alignments of the all empty holes shown below.
All rivnuts are installed with J-BWeld Steel Reinforced Epoxy
Completed aft spar assembly:
