Pre-aged warm tones on copper and brass; deepens as you carry.
What it is
Patina is the change in color and surface that some metals develop as they react with air, moisture and skin oils. Copper, Brass and Bronze deepen toward browns and sometimes greens, Silver darkens toward gray and black, and Carbon Steel turns gray to dark. Patina can form naturally with use, or a maker can create it in advance with heat or chemicals, often called a forced patina.
How it feels in your EDC
Patina does not change how a piece feels in your hand, but it changes how it looks over time. High-contact areas often stay brighter while recesses darken, highlighting textures, engravings and edges. Many collectors see a natural patina as a record of how they carry, making each piece more personal the longer they own it.
Care & aging
To let patina develop, simply carry the piece and wipe it with a dry cloth. To slow it, keep the piece clean and dry and store it away from humidity. To remove it, use a polish made for that metal, though this resets the look. On Carbon Steel, a stable dark patina can help slow rust, but red or orange rust spots should be cleaned off early.
是什么
包浆（Patina）是某些金属与空气、湿气和皮肤油脂反应后，在颜色和表面上产生的变化。紫铜、黄铜和青铜会变成棕色、有时泛绿，银会变灰变黑，碳钢则由灰变深。包浆可以在使用中自然形成，也可以由品牌用热或化学方法预先制作，常称为强制包浆。
上手感受
包浆不会改变作品的手感，但会随时间改变外观。常接触的部位往往保持较亮，凹陷处变暗，从而突出纹理、雕刻和边缘。很多玩家把自然包浆视为自己携带方式的记录，拥有越久，作品就越有个人印记。
保养与老化
想让包浆形成，只需日常携带并用干布擦拭。想减缓它，保持作品干净干燥，存放时远离潮湿。想去除，可用对应金属的抛光剂，但外观会重置。碳钢上稳定的深色包浆有助于减缓生锈，但红色或橙色锈点要尽早清理。
