| Our unique bronze sinks are formed by using Precision Casting methods. Each bronze sink is then finished, patinated(High-temperature makes the patina) and waxed by hand. Our bronze sinks have a living finish that evolves over time. All Manhattan Interior's cast bronze sinks are made from tin bronze alloys (88% copper, 8% tin and 4% zinc, lead free), that is ZCuSn8Zn4, which is equal to ASTM C90300. Our bronze sinks have a living finish that evolves over time. Currently we can provide 4 colors for you choose from: "Aged patina", "Blackened patina" "Old Nickel Sliver" and "Golden Bronze patina". Each sink receives a coat of beeswax containing carnuba. Giving our sinks a rich, natural luster slowing the natural oxidation process. A maintenance coat of any carnauba-based paste wax, BeesWax applied periodically maintains this finish.
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