Observed arrival · 2026-09-15
Reachbotics — A Robot Arm You Print Yourself
Reachbotics documents a six-axis desktop robot arm built from 3D-printed parts, custom 33:1 cycloidal reducers, and control software.
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Field notes
The arm repeats one NEMA17-compatible joint module across all six axes, pairing it with a 33:1 cycloidal reducer whose printed disks and housing are assigned different plastics. The control architecture places kinematic calculation on the computer while the Arduino-based board generates steps and reads position feedback. The page specifies 0.2 mm layers, 30% infill, STL and optional STEP files, and a hardware emergency stop on a 24 V / 15 A supply.
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○OpenPublic substance visible
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