Hi,
Is your Lazy Susan still doing well?
Question: Above you stated that it is best to lubricate the Lazy Susan with something like "powdered graphite" lubricant. I have never used that. Is it safe to use? Do I need to be careful in any way when applying or while it is in the oven?
Yes, it is working slick as can be. In fact, i used it in the garage throughout the winter here in Colorado.*
The powdered graphite is very inert and benign, as it is basically pure carbon. As a lubricant it is good to 2400F! I trust it far more than I would any grease or oil. You are going to ingest infinitely more carbon from the char on the bottom of your pizza, IMO.
You will notice that if you have properly degreased and de-zinced your lazy susan bearing, it will be quite sticky and will not turn smoothly at all. Before putting the bearing in the oven, shoot some graphite in the bearing races, give it a spin, shake it out, and you are good to go. It will stay put under the stone and will not need to be reapplied for months (years?). I would take it back out of the oven if I felt the need to reapply, which I haven't in more than a year.
* I know that these gas ovens should only be used outdoors. I had to remove the bottom shield when I did my turntable mod, so I adjusted the air intakes on the venturi's to minimize the yellow flame, which minimizes carbon monoxide production.** It is probably equivalent to haveing all the burners on my gas cooktop on at the same time. I leave a door open to be safe.
** Others on this forum have actually done the opposite. They argue that a sooty yellow flame cooks better, perhaps because it is more like a wood-fired oven. Those of us who have fired up a full-size commercial wood-fired oven know that while it is initially smokey, once up to temperature it burns very efficiently, with little smoke and no soot at all.