Well, I have advanced a little bit. I waited a long time on the bolts and screws. Once we got them, we were able to build the Slab Insulation panel.
We have not placed it yet, but we also have part of the base (first line of blocks) and will finish it today. We will wait for the lower oven kit to finish as we need the wall liners.
I have a couple of concerns:
I used 2" foam because I could not find 1.5". That means the opening in the middle (insulation mix) will be a bit thicker and will have more insulation, but at the same time, the slab under it will be a bit thiner.
I know the slab gains strength with the metal fibers and those two bars in the sides, but there are firebricks to place and perhaps a large pig to roast.
The entire slab is 3.5", minus the 2" foam in the middle. That only leaves 1.5" thickness straight in the middle of the slab. Do I need to worry,
Also, I ended up with a couple of fiber bags left because I used less mix.