I love Dane Kouttron’s monster 3D printer!
This project documents the re-purposing of a ‘rescued’ 1980’s IBM 7575 SCARA Robot Arm, into a functional 3D ABS printer. The project features some motor upgrades [listed earlier], documentation of encoder positioned motor control feedback theory, the interminglings of EMC2 [Linux CNC], heated workspace construction and a step by step overview of transitioning from 3D stl model to 3D g-coded structure. The huge reach of the 7575, allows for printing large objects, (roughly ~25″x12″x6.5″ maximum). Some of these prints are shown below.
Be sure to check out Dane’s build notes, which are almost absurdly detailed. [Thanks, Matt!]
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