While I agree about the fuselage construction the one of wing is exactly conversely I'm afraid. The inner wing was of metal structure and had a metal skin of duraluminium sheets D1. Two main , pipe stringers were made of chrome steel HGSA. The airfoils made of duraluminium. The leading edge made of D1 durlaluminium sheets of 0.5mm thickness. The wing-fuselage "transition" was made of duraluminium plate D6. The outer parts of wing had two metal stringers made of HMA or HGSA metal pipes . These stringers were joined with duraluminium plate D6 and stiffened with a frame made of HMA steel pipes Airfoils were made of wire with wooden pieces . In order to keep the proper shape , the outer wings were partially covered with birch plywood (of 0.6 mm thickness ) up tp the first stringer and of 3mm at areas between stringers. The entire structure was covered with fabric. The stabilizers and elevators were of metal structure covered with birch plywood of 0.6mm at the leading edges ( stabilizers ) in order to keep the airfoil shape and skinned with fabric. The stabilizer and fin joints to the fuselage were molded with D6 dural sheets.
To sum up... pre-shading for the inner wing is correct. There were panel lines. But the outer parts of the wing had the smooth surface without any panel lines or inspection hatches visible. The molding of fuselage-wing and stabilizer joints made of metal plates attached to the wooden surfaces made a kind of "tappered step" but no gaps. But the preshading there can be done as well. The different matter are ribs covered with the canvas. Usually their top edges are exposed to the sunlight that makes them faded and much lighter than the rest of covering. Therefore it is illogical to make them darker while these should be lighter. It is also compatibile with painting rules. The closer to a viewer the lighter is. Of course it is my opinion only and I am not trying to minimise your great work here.
To sum up... pre-shading for the inner wing is correct. There were panel lines. But the outer parts of the wing had the smooth surface without any panel lines or inspection hatches visible. The molding of fuselage-wing and stabilizer joints made of metal plates attached to the wooden surfaces made a kind of "tappered step" but no gaps. But the preshading there can be done as well. The different matter are ribs covered with the canvas. Usually their top edges are exposed to the sunlight that makes them faded and much lighter than the rest of covering. Therefore it is illogical to make them darker while these should be lighter. It is also compatibile with painting rules. The closer to a viewer the lighter is. Of course it is my opinion only and I am not trying to minimise your great work here.
Last edited: