Case: Spun Copper Lamp Shade

案例：铜灯罩旋压

type:case-study · level:intermediate · material:copper · scale:decorative-object · stage:patternmaking · stage:finishing

标签：案例, 灯罩, 旋压, 实践

制作一顶 20 cm 圆锥形铜灯罩：①1.0 mm 紫铜圆料下料 ②车木模板（半锥角 30°）③夹装、低速旋压收口→扩锥 ④中途退火一次 ⑤切边、钻顶孔 ⑥酸洗抛光 ⑦火焰着色做由内到外的彩虹渐变，打蜡封护。成品兼具反光与装饰性，常见于复古灯具。

A 20 cm conical copper lamp shade: ①blank 1.0 mm copper ②turn a wood mandrel (30° half-angle) ③mount, low-speed spin: set edge → flare cone ④anneal once ⑤trim, drill top hole ⑥pickle-polish ⑦flame-color an inside-out rainbow, wax seal. Reflective yet decorative — classic vintage lighting. ---