I think it would be tough to make something that is exactly scale and at the same time functional and flyable. One of the companies that make hobby type lathes had an add that showed a fellow who made a T-6 or something from metal and all the parts were exact scale, it was beautiful but not flyable, but it was pretty small if I remember right. This may be why 1/3rd scale and larger is getting so popular....exact scale parts can be made and used as on the original....

I was thinking about the lack of JB weld in Japan. You might try mixing micro balloons with epoxy. I'm sure that would work. May work better as epoxy is a little more fluid than JB weld....

Randy