Andrew, do you know what the thermal conductivity of beeswax is?

http://www.fao.org/docrep/w0076e/w0076e12.htm

Very informative.

http://www.kayelaby.npl.co.uk/genera...2_3/2_3_7.html is also
interesting, especially if you follow the link to the polymers page at
http://www.kayelaby.npl.co.uk/chemis..._1.html#3_11_1

It looks as if beeswax and paraffin both have thermal conductivities
of about 0.25 ( when measured in W / (m K) ), and that epoxy cast
resins are in the range of 0.17 - 0.21.

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