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Best Way To Blue Steel? Cold Blue, Hot Blue or Rust Bluing.
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Triple-T #82: Hot salt bluing / blackening for knives
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Nitre Bluing Basics
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BLACK STEEL in 10 minutes: CAUSTIC BLUING Tutorial (with Household Materials)
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Cold Bluing... Perma Blue vs Brownells Oxpho Blue
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Making A Hunting Knife From A Saw Blade
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Professional Gun Smithing Series Master's Bluing Technique 501 College Level Course
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