It turns out that the first 9 nutplates I installed yesterday did not bond properly. I noticed as I applied the adhesive yesterday that the first six or eight squirts that came out of the mixer tip were dark green in color -- almost black, really -- while the later ones were much brighter green. The bright green blobs cured perfectly, but the darker ones were still wet after 22 hours. I pulled those nutplates off by hand, cleaned off the residual adhesive, and tried again. This time, I squeezed out a 6" line of adhesive onto a paper towel first, until the stuff coming out was really bright green. I also set up a portable heater nearby in my workshop to help with the overnight curing process, since summer has not yet arrived in Illinois.Tomorrow, I'll see how they did.
I also routed out the plastic baseplate of a small video camera mount that will attach to one of about six locations all around the airplane. The countersink I created will house a #8 screw and a finishing washer.
The 9 closest nutplates on the bottom were replaced.
