Your $300 3D Printer Just Became a Nanoscale Robot Arm—And It’s Terrifyingly Good
A 3D-printed micro manipulator achieves sub-micron precision for under $300, proving that additive manufacturing can rival clean-room fabrication. This open-source device democratizes nanoscale science—allowing anyone with a hobbyist printer to move bacteria, align lasers, or build precision instruments that once cost thousands. It’s a challenge to the monopoly of MEMS and a gift to makers, educators, and researchers.