Starting with the wings, the first operation is to open up the undercarriage wells. The edges are marked in the plastic and I used an old dentists' drill to open them. All the parts are then scribed and sanded off from their moulding sheets. The parts are sanded flat on a Sandvik-plate , a metal sanding board. The advantage of this method is that it ensures a thin and straight wing.
Care is recommended since it is easy to remove too much plastic.
To strengthen the wing, I attached thin strips of plastic sheet, sized approx. 4x30 mm, into the wing to act as a beam. In order to get some strong points to attach the main gear to, some small pieces of plasticard went into the undercarriage wells to serve as attachment points. The fuselage can be glued together without the cockpit parts, these can be inserted from below afterwards. The engine covers can also be assembled and sanded smooth now.