A Two-hour Medal Coining Taster Class
纪念章压印体验课的 2 小时设计
标签：体验课, 课程设计, 压印, 教学
2 小时压印体验课安全版大纲：0–20 min 压机安全规程与手动 Bonny 压机结构讲解，双手同步按钮演示；20–50 min 用预退火软坯压第一枚现成模章；50–80 min 学员设计姓名小字模（酸蚀或激光刻制由教师代操作）；80–110 min 二次压印、修边与硫化做旧；最后 20 min 冷珐琅上色并打编号。师生比不低于 1:4，行程区内严禁伸手。进阶作业：自行设计 30 mm 浮雕章，提交压强估算、回弹实测与修改记录三页报告。
A safety-first 2-h coining taster: 0–20 min press safety rules and the anatomy of a manual Bonny press, demonstrating two-hand controls; 20–50 min striking a first medal from a stock die on pre-annealed blanks; 50–80 min learners design a name punch (acid etch or laser marking done by the instructor); 80–110 min second strike, edge dressing and sulphide patina; final 20 min cold-enamel colouring and numbering. Keep tutor ratio at 1:4 or better and hands out of the stroke zone at all times. Advanced assignment: design a 30 mm relief medal and submit pressure estimates, measured springback and revision notes.