Nearing the top you have to get a little inventive as the bricks are set almost verticale. The last KEY brick holds it all in place.
Next the exterior is covered in mortar. Chimney set in place. (I later raised this for more draft. The chimney is made of 8" Chimney liners.
Once this is dried, a layer of fiberglass insulation like you would find between a household oven and the exterior to isolate the heat, is added the the exterior of the dome. This is held in place with wire. then a layer of cement is put over the while thing to tie in with the concrete surround.
At this point slow low burns are done to cure the oven. Each burn gets it a little hotter. After about 6 burn cycles it should be ready for cooking. I starting a mosaic on the outside for that artsy look.
[attachment deleted by admin]
[attachment deleted by admin]