Dennis, The build might not be as long to some as it was to me. Seem like most of the wood working went along pretty good.(Nice kit of coarse, "Brodak") I continued to work on it alot but the progress slowed way down, still fun though.....remember: A bad day at the flying field is still better than a good day at work!....something like that. To answer your question, I started it on Dec. 27th and the photo was 4-13. During the winter I devote alot of time to building, I may enjoy that as much as flying....since I am not a top flier. I consider a good flight to be: No extra pieces! Thanks! Terrry