旋转笔架

一款可转动的笔架模型，全部零件均为平面打印无需支撑。模型通过多级齿轮传动实现联动。此模型既是摆件也是工具也是玩具。还可以作为科教模型，让学生在组装过程中熟知常见的齿轮结构，寓教于乐 A rotating pen holder model featuring fully planar printing (no supports needed) and an interactive, multi-stage gear-driven mechanism. More than just a display, it's a functional tool and a fascinating toy. It also acts as an educational STEM kit, teaching students about gear systems through hands-on assembly—making learning fun and engaging.