Rust bluing a frame question - what is 'in the white'?
I am playing around with rust bluing and hard carding and am very happy with the results. I have a luger frame that I want to rust blue. Not having access to an original older model luger, what was left 'in the white' during the rust blue days? I am aware that the inside top of the frame was left in the white, but what about the mag well and areas around the spring?
Thanks
Mark
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