Now that the rudder skin has been deburred, the edges have been broken, smoothed and primed, it is time to start riveting the stiffeners on. This involves the back rivet technique in which I have very little practice doing. As with anything thus far, take your time, have the proper tools, have all the pieces ready, read the construction manual and then proceed.
Below is a close-up of the first of many rivets that I back riveted.
This picture shows the outside of the skin and the rivet tape used to hold them in place while you drive the rivets from the shop side of the skin.
