Sorry not an egger, nor do I have a industrial cooker. But I do have a conventional oven that I line with clay tiles and I am able to get my temp up to between 500*to 550 on the first run. I really like the results that temp and method brings me. After that the temp drops some because of the heat escaping. But the tiles will still hold the heat well. You can see the results on my avatar or if your intrested, I have posted alot of what I do in past threads.