[blatant plug]
What you need is some of my patent pending machinable wax, made with scented wax! Smells really nice when you machine it, none of this pungent sulpher smell or burning WD40... plus your tools stay shiny and sharp, and a CNC tool crash just breaks the wax leaving your expensive cutters unharmed!
Of course, making a live steam engine with machinable wax is not really a sensible proposition; although, it might be interesting to try to make a compressed air engine from it....
Anyway, this has been a public service announcement on behalf of the nice smelling machinist corp. Probably...
[/blatant plug]