De-rusting and etching Damascus gun barrel

[Dmitry]

Originally Posted by Iain

Antler technique sounds intriguing. New one to me!

Me as well. I sometimes use sharpened pieces of wood, but antler makes sense. It's softer than steel, but harder than rust. Sometimes I coat the surfaces with BreakFree CLP penetrating oil and let the item sit for a week, before I "take the knife" to it. My feeling is that the oil will sufficiently penetrate and soften the rust in that time-span.