Brief Description: Prepping the inspection hole covers.
Today I began prepping the inspection hole covers for nut plates, which were an elusive part to find (K1100-06). Nobody caried the countersunk nut plates. Actually, Aircraft Spruce does but they are $1.97 each!! Wayne Massey pointed out that Van's has them for $0.58 each. Much better! I had to dimple all of the rivet locations in the nut plates to accept flush rivets. This took quite a long time since I had a total of 275 of them to do (includes the tank cover nut plates).
Then I drilled the screw holes to size in the covers and backing rings.