Today I reduced the fuselage into descrete pieces and began to make templates. The original design was 1/4" lite ply, I plan to substitue 1/8" aircraft ply for the engine box and 1/8" lite ply and other areas. I do plan to use 1/4" lite ply on several formers however for gluing purposes. From my measurements 1/8" aircraft Ply and 1/4" lite ply weight the same. Likewise 1/16" ply and 1/8 lite ply are the same weight.