bit of an update. You had me curious.
http://www.bbc.co.uk/dna/h2g2/A778197
I'm wondering if you couldn't use soy wax. Much lower melting temp and readily available in many places. As it is, my wife and I make soy candles for Christmas gifts so maybe I could "borrow" some of that wax and try it this year.
Side-note: I am planning to make cheese this year (when the temps around here are lower than Hades) so who knows, maybe plant based waxes may work.