Why is color change already visible on the brass parts when opening a brand-new product?
When receiving a Kakimori product and opening the packaging, there are moments of confusion when the surface of the metal parts does not shine like new. It makes you want to check whether there is a defect with the product or if it is a characteristic of the material.
Because Kakimori uses solid brass without plating on the outer surface, aging may have already progressed by the time it is delivered and reaches your hands.
When you unpack and face the product, the surface of the metal parts may not be completely smooth or may have darkened in areas. Kakimori manufactures parts using solid brass without applying a film coating to the surface during the processing stage[1]. As such, it can react with air and aging may already progress while being stored and delivered[2].
Generally, when untreated brass comes into contact with oxygen or moisture in the air, the surface gradually oxidizes and takes on a darker hue. This is not a flaw or a defect, but a natural process where the original nature of the metal without a coating film is revealed. Through daily use, friction is added wherever hands touch frequently, creating a unique luster for each, and if you wish to restore the initial bright shine, you can lightly wipe it with a dedicated metal cleaner or a polishing cloth.
The specific cleaning methods or tools officially recommended by the brand to care for the aging of brass parts have not yet been confirmed.