µRepRap项目正在将开源3D打印技术拓展至微观领域，开发一种精密的微型制造平台。1 该项目的PIKA V0.02硬件已实现约1微米的可重复定位精度和10微米以上的可靠精度，1 能够沉积4微米的紫外树脂液滴。1 采用PIKA机制蚀刻的细探针已用于测试，同时光纤探针也已成功固化9微米的树脂线条。1
该系统采用400步或200步NEMA17步进电机驱动，1 并通过Arduino GRBL控制系统进行GCODE交互。1 初期测试中可使用0.5毫米皮下针或0.25毫米针灸针作为探针。1 项目团队正在开发MAUS 'L' V0.05版本，处于2026年2月的开发中。1
该技术旨在实现类似RepRap对桌面3D打印的民主化效应，将精密制造能力从宏观扩展到微观领域。1
The µRepRap initiative aims to democratize precision manufacturing at the micrometer scale by adapting open-source 3D printing principles to create a miniature CNC fabrication system.1 The PIKA V0.02 hardware has achieved repeatable positioning accuracy of approximately 1 micrometer and reliable precision exceeding 10 micrometers, while successfully depositing ultraviolet resin droplets measuring 4 micrometers in diameter.1 Using fiber-optic probes, the system has also cured resin filaments as thin as 9 micrometers.1
The project employs 400-step or 200-step NEMA17 stepper motors controlled via Arduino GRBL for G-code interaction, with initial testing using either 0.5mm hypodermic needles or 0.25mm acupuncture needles as probe elements.1 The MAUS 'L' V0.05 version is currently under development with a target completion date in February 2026.1 By bringing microscale manufacturing capabilities to open-source platforms, µRepRap seeks to replicate the democratizing impact that RepRap has had on desktop 3D printing, extending it to both micro and macro fabrication domains.1
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