Yes, but high luster rust blue is very tricky and requires more than a higher degree of polish. You cannot let the acid work on the metal too aggressively. Environment is very important. I find a rust box too intense if I want a high luster blue. Strength of the solution, humidity, temp, and time all come into play and there is very little margin for error. More input from our British friends would be greatly welcome. I had it worked out nicely with Pilkinton's in my last shop and my current one, it is no longer produced and I am working towards similar results with a batch of Brownell's that I have. I really need to make my own, I do making my own browning solutions.
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