This kind of 3d printer generally uses stepper motors, not servos. From what I c... | Hacker News

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		jstanley on Dec 2, 2017 \| parent \| context \| favorite \| on: Fast desktop-scale extrusion 3D printing This kind of 3d printer generally uses stepper motors, not servos. From what I can see, this printer appears to use stepper motors too. I'd believe it's real-time. The X axis is held in place vertically by the 2 shiny metal rods you can see, and is dragged back and forth by the black rubber belt, which is controlled by a stepper motor.

mwrouse on Dec 2, 2017 | [–]

I know, I have several printers mtself. They are using only servos. Which is why it's faster probably. EMJ-04 series.

The rate at which it jumps around is just ridiculous though.

lylecheatham on Dec 4, 2017 | [–]

They're actually using servo motors! They refer to it as a "servo-driven parallel gantry system" in the abstract.

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