Wow, old thread and it is alive
Thank you everybody for kind words, I have to admit, there is not too much of old country skills. If I remember correctly, I laid about twenty bricks when I lived in Czech. This oven is just another proof that I can do anything - except make big bucks and/or a career in a corporation
If you ever build your own, this is my experience after almost a year. The shape has a tendency to develop small, structurally insignificant cracks. I can live with it, and esthetically it is not a problem either. From what I have read, people separate the actual oven and the dome above it with aluminum insulation foil or a space filled with some sand or such to allow the dome of the oven to move without affecting the oven cover. There is a link somewhere here to real experts who do seminars and provide all the information you need. I considered it and went the simple way.
Second thing is the wooden support. Since the clay is very sticky, for the first 2/3rds of the dome you don't need the wood for support, only to give you a guidance where to lay the next brick. But for the top, this orange like support is not enough. If I wanted to do it again, I would make the wooden support look like a mushroom, where the top of the mushroom would be full wood carved from dimensional lumber or such to hold bricks in place and give shape to the fireclay filled spaces between.
And Rose, since those pictures I made wooden door from maple - just couple of boards with a handle to block the heat inside. It makes a difference.