Originally Posted by moparx
Originally Posted by Ray S
Interesting thread.
Some coatings are available to reject oil; I have Cerakote in my Geo Metro which regularly sees 6k rpm.


in my machinist career, cerakoat [coated] carbide cutting inserts were frequently used. they cut very well using little or no lubrication liquid, and would cut at almost twice the rpm and feed rate as a bare carbide insert would.
beer


Ooooh, I never knew that
I wonder if mill bits would be helped