I have an old house with low ceilings which means that the exterior door frames are non-standard. I want an exterior combination door and have had to cut down the next larger standard door to fit. This means I cut through the dowels holding the door together and then have to reinforce the corners with steel angles.
My wife wants a door with a large, open, glass area; the bigger then better without and mullons, etc. so that we can see the old-fashioned inside door.
Glass is heavy so what dimensions would make sense for the side pieces? Also would mortise and tenon joints be the strongest rather than doweled?