Precision-cut from solid metal for tight fits and crisp edges.
What it is
CNC (Computer Numerical Control) machining uses computer-guided cutting tools to carve a part from a solid block of material. The machine follows a digital design, removing metal or other material layer by layer until the final shape appears. Milling, drilling and turning can all be done this way. The machines, tooling and tolerances depend on the maker.
How it feels in your EDC
CNC machining is the backbone of most premium EDC because it can produce precise dimensions, crisp edges and consistent fit between parts. That precision matters for sliders, spinners and buttons, where small gaps affect how smoothly parts move. Compared with die casting, CNC parts usually come from solid stock and show sharper detail, though they take longer and cost more to make.
Care & aging
Machining itself doesn't need special care; how a CNC piece ages depends on its material and finish. Freshly machined parts may show fine tool marks, which makers often refine with blasting, tumbling or polishing. Keep moving parts free of grit, which can wear tight tolerances over time, and follow the care advice for the specific material and finish.
Also searched as: CNC Machining, 数控加工.
是什么
CNC（计算机数控，Computer Numerical Control）加工是用计算机控制的刀具，从整块材料中切削出零件。机床按照数字设计逐层去除金属或其他材料，直到得到最终形状。铣削、钻孔和车削都可以用这种方式完成。机床、刀具和公差取决于品牌。
上手感受
CNC 加工是大多数高端 EDC 的基础，因为它能做出精确的尺寸、利落的边缘和零件之间一致的配合。对推牌、指尖陀螺和按键来说，这种精度很重要，细小的间隙都会影响零件移动的顺滑度。与压铸相比，CNC 零件通常来自实心原料，细节更锐利，但加工时间更长、成本更高。
保养与老化
加工方式本身不需要特别保养，CNC 作品如何老化取决于材质和表面处理。刚加工出的零件可能有细微刀纹，品牌通常会用喷砂、滚磨或抛光加以修饰。保持活动部件远离砂粒，砂粒会随时间磨损精密配合；请遵循对应材质和表面处理的保养建议。
常用名与搜索名称：CNC Machining、数控加工。
