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Berkeley Douglas F4D Skyray by David Duckett. Viewed 454 times. Build Thread Next Prev Click image to return. Image Comments David Duckett 23-Jan-16 06:55 The fuselage is about 4" diameter and the exhaust is about 3". Notice that the bottom of the fin/rudder is curved to fit that outline. I first glued one of the stringers to C to B and then from C to A. The problem is that at Point A it's paper. Each additional stringer is glued to its neighbor so all 120+ used are all glued together. That means that the original curve established is maintained lengthwise and allows control in placement of where the stringer meets the paper. The reason you can't do all that with one piece of curved balsa is because it's a compound curve. If you covered from A to C you would lose the curve. And with all the stringers involved being glued together it's quite strong which, by the way, is why I would never use 1/32". All surfaces will get filler and that means sanding so thin wood just doesn't work. Ever. pfinn 23-Jan-16 11:37 Thanks David. I actually understand! And plus after I read this, I looked at your previous posts and saw one I missed. Your Jan 16 posts that illustrates this process.Thanks again. Phil Skyediamonds1985 24-Jan-16 17:08 Thanks DD for the explanation too. Didn't consider about the rear portion of the fuselage having compound curves. I'm hoping to use wrapped sheeting method on the S.E. 5 since almost all of the fuselage is "squared on" with no compound curves. The exception being from the front windshield to near the fuselage-mounted machine gun. For that, I will sheet that section separately. Using 1/32 sheet ply. Its my intent to only sand off (very lightly) the "fuzz" off the wood, since I'll be covering the whole sheeting anyway with Solartex in effort to duplicate the construction of the real aircraft. Creosotewind 01-Feb-16 10:15 For some of the compound curves I encountered on my Sherman Tank model, I laminated several pieces of heavy card stock together using white glue. As it dried I was able to work it to the shape I needed with my fingers and the surrounding model. That might work for a situation like this. Something I'll keep in mind whenever I get around to making my F4D model. But no matter, this model looks great. David Duckett 01-Feb-16 14:05 Thanks, Jim. I tend do do things that I have some confidence will work. Please sign in to comment on this image.