Just so you are aware, In two to five minutes on a conventional stovetop, cookware coated with Teflon and other non-stick surfaces can exceed temperatures at which the coating breaks apart and emits toxic particles and gases linked to hundreds, perhaps thousands, of pet bird deaths and an unknown number of human illnesses each year, according to tests commissioned by Environmental Working Group
DuPont wrote that "significant decomposition of the coating will occur only when temperatures exceed about 660 degrees F (340 degrees C).
In cases of "Teflon toxicosis," as the bird poisonings are called, the lungs of exposed birds hemorrhage and fill with fluid, leading to suffocation. DuPont acknowledges that the fumes can also sicken people, a condition called "polymer fume fever."
Have no Idea if the same affect happens with solid stock Teflon. But as with all things it is something to consider when it will be in contact with constant heat.
You may want to check out the local ceramic supply for the small ceramic bits, called kiln furniture. You can cut it to size on the small tile saws.
Been there, probably broke it, doing that!
I am not a lawyer, and never played one on TV!
All the usual and standard disclaimers apply. Do not try this at home, use only as directed, No warranties express or implied, for the intended use or the suggested uses, Wear safety glasses, closed course, professionals only