> >I was under the impression the surface would need to be lapped (again) after the nitriding. What is your take on that? Could the lapping wait
     until the
     > nitriding is done?
     >
     >     Jim Brewer

Jim, Nitride is a no-size-change process. The coating is typically
.0005 inches thick or less, half of that thickness is developed in
the base material. You might need to lap again if the nitride dulled
the surface, but it would be minimal. I am not a chemist or plater
by trade but we use these finishes on a lot of our vacuum
equipment. they fight wear and very little lube can be used in
a vacuum system.
Bill Jepson

 
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