I've been reading about lubing and noted some are looking for hard wax to use in their mixes well my friends the hard waxes are readily available from jewelry supply sources and they are used in the "Lost wax " casting process here's a source...
http://www.contenti.com/products/casting/waxes.html
Personally I'm going to try the 45-45-10 mix as it looks quite handy and a lot less messy.