FWIW, peanut/soy oil is a pretty good cutting lubricant on the lathe/mill too. (manual machines, that is). It is slippery and can take relatively high heats. An

FWIW, peanut/soy oil is a pretty good cutting lubricant on the lathe/mill too. (manual machines, that is). It is slippery and can take relatively high heats. And, when it gets hot it smells nice. Chris King (the bicycle parts manufacturer) uses only soy oil for their machining operations because it has a lower environmental footprint and can be safely recycled.