That technique also works for me, as well.
"Finger pattern"
W_R finger pattern copy.jpg
H1 Wingroot 1 copy.jpg
H1 Wingroot 9 copy.jpg
Becomes a rigid form or mockup when made of aluminum strips which are then riveted as an assy.
xke007.jpg
xke022.jpg
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A graduate of Art Center once told me, after he and his team mocked up Bill Lear's steam bus in 6 days, "Anything is legal for a mockup." For the one-off stuff, I think it's best to work accurately but quickly, because it all gets tossed xcept for the final result. Q and D rules in that environment. (quick and dirty).
For doing 2-6, the game is different because the mockup takes much more abuse, so you have to go for a stronger - and more time-consuming fixture. Be creative. Chicken wire and plaster. Wire and rod, bent, brazed, and curved. Fiberglas splashed up for a shell. List goes on. What have you got nearby? Let's get to work.