Bluing a 5160 blade?

Joined
Jun 5, 2008
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Anybody ever used Brownell's Oxpho Blue on a 5160 blade? I have a knife that will be as much art as functional, and was thinking about someway to dark in the blade a bit, beyond the standard ferric etch. I had good luck on some wrought iron with the cold blue, by heating it up to about 250° as I applied.
 
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