I'm thinking aloud here.. this is probably a really bad idea and maybe dangerous but hell that has never stopped me. For most pizza, calzone, etc. baking we know we have limitations in our home ovens in the fact that they cannot reach the temperatures that commercial pizza ovens typically operate at. So.. they make pizza steels.. basically a big heavy steel plate that acts like cast iron for heat retention. What if we heated a pizza steel either on a propane grill.. or even with a high BTU propane burner like you might use for a turkey fryer.. up to say.. 700 degrees F.. then moved that to the lower rack in the oven.. could we get that extra burst in temp? Would the oven break down from the high heat? Would the house catch on fire?