Wow, big project. Make lots of sketches first. Remember , any journey without a destination just makes you lost or wandering. Have a picture of where you want to go. It will help immensely with the overall production and layout. Don't be afraid to make a cardboard mock up first to work out placement. Make relative scale cutouts of paper or cardboard of the footprints of what you want to build and add to the scene. With these you can check placement, scene"movement", dynamic and relative spacing and layout.
Because you are going to be doing it on a 4 x 8 sheet of plywood and adding things like celluclay, plaster, resin, etc I would seriously consider using at least 3/4 inch ply or even the much heavier mdf. If not I suggest attaching whalers (2x4 or 2x2) so that warping is kept to a minimum. 4x8 is a long span, and even with 3/4" if you span it between two sawhorses it will eventualy sag if it not supported properly. Thats alot of heartache on such an ambitious project. And will play havoc on your scenics.
Are you sure you want to do this on a 4x8? Most doors are not 4' so it will be similar to building a boat in your basement. While you can turn the 4x8 on its side to get it in the door, you most likely will not want to turn it up on end after you finish it. relegating it to either cleverly making it in sections that can be "reassembled" (seams can be hidden under architectural elements or clever additon of "applique scenics")or forever living in your build area. Can the same thing be accomplished in a smaller area? say the motorpool or work area near the edge of a rice paddie, or hooches or a gun position looking over a section of a rice paddie? Or a road way in to the entrance of the camp that passes over a causeway between rice paddies? It may not be as amibitious but certainly logisticly easier to build and move around if necessary.
Good luck with this, and as always, lets see some pics.Both in progress and finished.
Mike
Mike
"Imagination is the dye that colors our lives"
Marcus Aurellius
A good friend will come and bail you out of jail...but, a true friend will be sitting next to you saying, "Damn...that was fun!"