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Black oxide coating on brass
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2nd Dec 2019, 6:31 pm
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Vintage Engr
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Join Date: Jan 2008
Location: Shrewsbury, Shropshire, UK.
Posts: 823
Re: Black oxide coating on brass
Local gunsmiths should be able to supply you with either 'gun blue' or 'gun black'.
I've used it for years on steel & brass. Works well for blacking in engraving work as well.
David.
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