View Single Post
Old September 20, 2012, 11:31 AM   #11
guncrank
Senior Member
 
Join Date: July 15, 2006
Location: Fern Creek ,KY and Metro Louisville at large
Posts: 313
The clyinder sounds like a different alloy and cold blue is a plating process.
Cold blue chemically plate (false plate) copper sulfate on the metal and the acid in the solution blackens the plating.

Hot blue would not turn the clyinder black very well and neither will come blue.
BTW bluing is a rust, nothing more.

As for the oil migration, you are suppose to completely disassemble for any finish and before clean the metal.
__________________
CW Shooters Supply Inc
1-866-217-5990
Machine Shop and Finishing Services to the trade and public
guncrank is offline  
 
Page generated in 0.03976 seconds with 7 queries