3D-printed Masters for Relief Prototyping
3D 打印母模的浮雕快速打样
标签：3D打印, 母模, 打样, 树脂, 回弹补偿
浮雕打样可用高强度光敏树脂（如 Rigid 10K 类，抗弯强度 100 MPa 级）替代 CNC 铣铝母模：0.5 mm 以下铜/黄铜片浅浮雕、压强 ≤5 MPa 时单模可压 20–30 次。母模尺寸放大 0.3–0.5% 补偿卸载回弹；深于 0.8 mm 的浮雕需金属母模或分块打印后用环氧胶接并整体车平。打印层厚 25–50 μm，工作面涂环氧底漆封闭层纹，打样周期从 1–2 周缩短到 2–3 天，单件母模成本约为铝模的 1/5。
Prototype relief masters with high-strength SLA resin (bending strength ~100 MPa class) instead of CNC-milled aluminium: for shallow relief in copper/brass under 0.5 mm and ≤5 MPa pressure, one master survives 20–30 pressings. Scale the master up 0.3–0.5% for springback; relief deeper than 0.8 mm needs metal masters, or sectional prints epoxy-bonded and faced off. Print at 25–50 μm layers, seal with an epoxy washcoat. Turnaround drops to 2–3 days at about one-fifth of aluminium-tooling cost.