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@MrCookingNurse I have ceramic feet made by the mothership that fit under the egg and they seem to work fine I have done numerous low and slows and several hi temp cooks and no problem at all but thanks for the advice !!
I utilized 3 concrete pavers spread out horizontally with the ceramic feet on them to mount my large in my wood table.
No heat problems that way!
+1 on the stone. I have a paver stone and ceramic feet, and after a high temp sear I felt bottom of stone from underneath (I notched bottom boards so stone just sits on cross members, and I was very surprised at high heat level on bottom of the paver stone. On my new table, to be overly cautious, I changed dimensions so I had room for paver stone with layer of fire brick on top Here are pics of most recent table showing that: