Heres how the brass pens patina look different from exposing to

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I love pocket pens that patina : r/fountainpens

, Used to antique or darken solid brass, copper, bronze, or un-plated tin. Easy to apply and causes no dimensional change. Gradual color change

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Kaweco Bronze Sport Patina : r/fountainpens

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Wingback Brass Mechanical Pens - cleaned one of mine and it now looks dull compared to the others. Fixable? : r/machinedpens

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