ORIGINAL: Free Bird
To build both panels of the wing at the same time, one would need a pretty large building board.
FB
I just has a 4'X8' table built for me like Kevin Clark's, (see the King Altair build). It's topped by a metal sheet so magnets can be used to hold parts in place. This was built with the Simla in mind, but it should make any building easier. My wife was getting tired of me building wings on the dining room table.
Duane