Also began laying out the long wing spar pieces (W10-01). Started to rough cut as in picture #3 here, but realized that the Wiss snips can't make "inside" cuts like this. After a few inches the snips are too fat to fit. So I'm going to try the Olfa knife method (using a heavy duty Olfa knife to score thru the aluminum), and then use the snips to cut off the edges, down to the layout lines.
Starting to cut the big (12') sheets. W10-01's layed out.
Can't cut inside a long sheet with snips. Will try Olfa knife method.