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Check out this Northrop Grumman X-47B RC Plane Build by Eric Maglio.
“The internal structural parts were cut by laser from some 1/8″ plywood. They were assembled first, then glued inside the skins during the joining process. Much clamping ensured a tight fit. It was easiest to install the landing gear and doors next, while the model could still be rested inside the molds. All of the hinges are laser cut plywood, and no two are identical. This is because the many complex curves mean that the hinge geometry must be precisly controlled. Each gear door has it’s own small servo, and an Arduino controls the sequence of motions.”
