I also finished all the edges of the skin and did the final bend on the skin.
More back riveting:
The trim access stiffener with nut plates:
The squeeze clamps make it easy to get the bend just right. 
Construction progress and builder's log for my Van's RV-7 project N769WB
Thursday, August 30, 2012
Back riveted and bent left elevator skin: 4.5 hours
I got all the stiffeners and the electric trim access plate riveted. The trim access plate has seven small nut plates that are riveted on. For those I used some special small head NAS 1097 rivets as recommended by other builders. They worked great and I will be using these on the several hundred nut plates that will hold on all the access panels on the airplane.
I also finished all the edges of the skin and did the final bend on the skin.
I also finished all the edges of the skin and did the final bend on the skin.
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