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Examples

  • It looked like the copper oxides that form on the surface of sterling being treated for firescale in a cyanide dip.

    Bad hair day.

  • The jewelry industry uses boric acid to create artificial gems and to protect with alcohol, it can reduce surface oxidation and firescale from forming on metals during certain operations.

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  • When combined with alcohol, it can reduce surface oxidation and firescale from forming on metals during certain operations.

    CreationWiki - Recent changes [en]

  • There's no firescale when the metal is heated so no harsh chemicals are needed to remove the stain, and its bright finish and smooth texture inspire new designs.

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Comments

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  • Neat word.

    August 6, 2009

  • (n. silversmithing) - a pink to purplish stain that develops in sterling silver when oxygen penetrates the outer surface of the worked piece during brazing or soldering, oxidizing the copper fraction of the metal.

    August 6, 2009