Well we got the outer perimeter of insulating mud in today and then mixed up some dense mud and river sand to serve as the dense layer below the firebrick hearth. This will increase the mass below the oven floor to help hold the heat and make the oven stay hot longer. Today I had helpers.
Here's the layer of insulating mud inside the brick outer border. The "citadel" of center bricks are just to give a form with which to fill/pack the sticky, clay-like mud.
The last photo shows the finished base, now filled with the dense mud and sand mix. This all needs to dry a bit so it will hold the weight of the firebrick and oven layers without squishing out or deforming.
Once again. No Pizza Tonight.
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