My day job (big jets) heavy structural overhaul has had me deep into drawings for the last 40 plus years, so much, I did several years in the engineering group. Typically, the production drawings are only for the L/H side, and standard notes the say "R/H opposite". It takes a while to learn working that way, because unless the R/H side has major unsymmetrical difference, there is no drawing for it. VANS drawings are really pretty darn good to work with, even the Jurassic's like the -4 (what I built) are superior to some experimentals I have seen. many production aircraft drawings don't even have dimensions anymore, and the drawing is superimposed over 10" grid blocks which have to be used as a measuring point for actual size..PITA for reproducing parts from them. In production, there is a CAD program that goes to automation. Fortunately, VANs puts all the dimensions in for us !I always encourage builders to look at every drawing of next higher assembly before starting to cut a piece, as to be sure they fully understand hidden or invisible elements of their orientation.
8A7 / Advance NC