Today was all about countersinking the top longerons (can you say big?). These things are like 12 feet long and have rivet holes all over them and so there is lots of countersinking to do. I countersunk the top side for the #40 dimples for the cockpit rail L/R I countersunk the side of each longeron for the skin attach rivets (#40 dimples). I didn't quite get finished, but I put a big dent in them and hopefully next session will complete the major countersinking portion.
Countersinking one of the upper longerons.
Here's both left and right longerons laying together and mostly done.
