I started building the stand long before I had the oven. Not too many surprises except that now it seems that refractory experts say that insulation on top of the slab would be more efficient. I opted to put it underneath because elevations in the stand design I selected were pretty much concrete.. Pun intended. I'll post a pic showing that I used 3" of castable insulation under 2.75" of high alumina concrete. The edges outside the oven floor are a full 5 3/4" of alumina concrete. I'm hopeing that the thinner layer of directly under the floor tiles will heat up faster and be less apt to sap the heat away through too much thermal mass. I built the round base by building a form from metal stud sheathed with FRP and filling it with concrete. Scraps of the FRP are reused here forming the round refractory concrete slab.
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