What is jerk in 3D printing?

Jerk is the speed of direction change of the print head. In 3D printing it means a speed jump at a sharp corner. Typically 8-20 mm/s.

Jerk vs. Acceleration

Acceleration = how quickly speed changes. Jerk = how much speed can jump at a sharp corner.

Modern firmware

Klipper doesn't use classical jerk - it has Junction Deviation.

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