Thread: Rust Blueing?
View Single Post
Old February 5, 2010, 03:39 PM   #10
Unclenick
Staff
 
Join Date: March 4, 2005
Location: Ohio
Posts: 21,022
Interesting idea about the Dicropan. I've still got most of a bottle somewhere that I quit using because I wasn't satisfied with the color evenness when following the directions. Indeed, I did a test with cold blues on steel wire one time, leaving the finished parts (well-rinsed in acid neutralizing detergent and hot water, but un-oiled) sitting in room air conditions for several weeks. All got after-rust except the phosphoric acid-based blues: Van's and Brownells Oxpho-blue. Some of the rust was too coarse for rust bluing, but some was not. It seems to me the old hydrochloric acid-based Outer's formula was worst in that regard. The nitric acid based 44-40 blue may have been the best? It certainly had the best color depth independent of any other consideration.
__________________
Gunsite Orange Hat Family Member
CMP Certified GSM Master Instructor
NRA Certified Rifle Instructor
NRA Benefactor Member and Golden Eagle
Unclenick is offline  
 
Page generated in 0.03207 seconds with 8 queries