Thanks guys. It works for me anyway. Everything is showing. It's my barbecue core, topped with a refractory plate and barrel cover, to make a pizza oven. It will definately need insulation. But i don't know how yet.
Nice. The opening looks a little small but that may be from the picture. Will you be able to get the pizza in and out of there easily? I would assume that the metal top would be incredibly hot to handle but maybe I am wrong.
The opening is the smallest i could make it, to keep heat inside. About 350cm² for a csa of 324. It's losely based on Peter's horizontal batch rocket. With the venturi port at the back of the bigger firebox. 30x30x50cm firebox, 18x18x88cm heat riser. 70% of the 18x18 csa venturi port. The metal top will need to be insulated. It's radiating too much heat. And doesn't even get that hot!