If you like the thicker door look and want the wood exterior not to warp you use a standard metal insulated door and laminate the additional wood on either side. The inset panel can be 1/4 plywood. Glazing: the grid can be square stock and add standard moldings to create glass stop on either side. (don't forget to use expanstion block under the glass) The picture is for an over sized 3'6" door which could use a 3'0" metal door as the core and a 6" wide board on the lock side. Note: most metal door blacks can be at a door shop that sell them, a sheet-metal shop, or self cut with a metal cutting blade added to a stand field saw.

So it weathers every couple of years? get another from c-list or
Habitat for Humanity or the local recycling store! It's wood , so it's biodegradable, The entire concept is outside the box and edgy (a small bow to Martha and shabby chic). Have a creativity fling once in a while!

If you need Solid, Contemporary, Fiberglass, White Primed, French, Interior, Entry, Barn, Pocket, Sliding, Commercial, Garage, Closet, Dutch, Traditional, Mahogany, Knotty Alder, Douglas Fir, or Florida Rated Impact Doors, go tohttp://www.etodoors.com or call (888)Door ETO.