Hi all, for years I've been using crock pots for the wax, but would really prefer to have something with a spigot, and have been reading excellent things about the converted Presto pots. My concern is the Teflon-type chemical coating. I'd really prefer true stainless steel or aluminum so there is no off-gassing from the non-stick coating. However, after spending probably 10 hours searching online, I can't find anything except stock pots that would need to be put on a hot plate (that is, they don't come with a heating element). Would it take forever to heat these with a hot plate? Would that even be safe to have a hot plate running for several hours? Thanks for any advice.