Japanese Tea-utensil Electroforming & Electrocoloring Tradition
日本茶道具电铸与电解着色传统
标签：日本茶道, 电铸, 电解着色, 高冈铜器, 传统工艺士
日本自明治时期（1868 年后）将电铸引入茶道具配件制作：蜡或树脂原模导电化后，在硫酸铜浴（CuSO₄ 200–250 g/L、H₂SO₄ 50–60 g/L、2–4 A/dm²）中沉积 0.5–2 mm 铜壳，制成香炉盖钮、茶则等。京都、高冈匠人继而以酒石酸钾钠碱性电解液低压（0.5–1.5 V）微电流着色，膜层由紫褐渐入乌黑，与锤目肌理叠加出"侘寂"层次。该技艺至今由高冈铜器"传统工芸士"认定制度传承，产品须经定期审查方可署名。
Since the Meiji era (post-1868), Japanese makers have electroformed tea-utensil fittings: conductivized wax or resin masters are plated in a copper sulfate bath (CuSO₄ 200–250 g/L, H₂SO₄ 50–60 g/L, 2–4 A/dm²) to grow 0.5–2 mm shells for censer knobs and tea scoops. Kyoto and Takaoka artisans then color at low voltage (0.5–1.5 V) in alkaline tartrate electrolytes, shifting films from purple-brown toward deep black over hammered texture. The lineage survives through Takaoka's certified "traditional craftsman" system. ---