black oxcide

DC, from what I've read, yes it can be used on stainless. HERE is quick link to one of the better known purveyors of this service (tools and hardware).
 
You know I read the link but still unfamiliar with the process. I hot blue,manganese and zinc parkerize and cant tell with the description if this is one of those processes or not.
CW
 
From what I've read in the past, some guys actually prefer black oxide drill bits as they claim the coating holds lubrication/cutting fluid better.

I've not tested this myself however.
 
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