Rust bluing is not the same as cold bluing. Hot caustic bluing, or black oxide has been the norm since the 60's.Hot bluing is more of a black color, rust blue is blue. Rust bluing is also a hot process.
Rust bluing is not the same as cold bluing. Hot caustic bluing, or black oxide has been the norm since the 60's.Hot bluing is more of a black color, rust blue is blue. Rust bluing is also a hot process.
"As long as there's lead in the air....there's still hope.."
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