No Novan, I have not yet tried cold blue on any blade that has nickel in it.
I have use ferric chloride a lot. Thirty years ago I was very active in custom knifemaking, I made complete knives --- not very well --- and I made a lot of damascus blades, random pattern, but good quality, that I mostly sold to other knife makers.
Ferric chloride works very well on new, well polished damascus, however I have not had good results when I have tried it on older blades or pamor material.
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