I have a question. I'm going to tackle a bonnet first (technically luggage lid - rear engine car). The outer skin looks fairly straightforward, but the steel original also has an inner structure. See attached pictures, which I stole from the internetz. My question is, how can I make both sections separately but then put them together? The outer skin has an inward facing flange making it hard to shoehorn a structure into it once it's made. I could make the inner structure first and then try to add it to the outer shell as I'm making it and the resin hasn't yet cured. The main problem I face is getting the two parts to gel together. Is there a good strong way of bonding two carbon parts together?