FRONT HALF Test fitted the front spar section to the wings and then proceeded to set all of the solid rivets and rivet on the vertical stiffeners to the front half of the center spar section.
REAR HALF Cleaned up the rear section and realigned the caps and doublers using the wings. Set the two end solid rivets on both caps and test fitted to the wing again. Set all of the remaining sold rivets through the caps.
Used clear fibreglass reinforced packaging tape to protect the rivet heads from the rivet hammer die