I doubted at first that 6 axis arm can have enough accuracy for .4mm hot-end. After all with 'planar' 3D printing even vibrations within the chassis will affec

I doubted at first that 6 axis arm can have enough accuracy for .4mm hot-end. After all with 'planar' 3D printing even vibrations within the chassis will affect print quality. However, apparently there are arms with 0.005mm repeatability and zero backlash. https://www.mecademic.com/en/meca500-robot-arm https://www.mecademic.com/en/meca500-robot-arm