The ailerons are are simply being constructed from 2 sheets of 1/8th with with wedges and a leading edge carved from 1/2 inch sheets to support the hinges. The leading edge is slotted to receive the surface sheets and the wedges support the ends.
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Before fitting the top sheet. I've pinned the hinges through the leading edge and secured them with super-glue. This makes sanding and any shaping a little awkward however, the pins are hidden and the ailerons are secure.
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IMPORTANT - If you are using more than 2 hinges on control surfaces, make sure they are accurately aligned along both the wing and the control surface. Poor alignment will cause stiffness in the movement.
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