Ghosting and ringing: waves after sharp edges
Ghosting or ringing appears as repeated waves after sharp corners or fast direction changes. It is caused by vibration in the mechanical system that continues briefly after the commanded movement changes. Higher speed and acceleration can make the effect more visible.
Typical appearance
Example: sharp corner → several fading waves. Do not confuse it with Z seam, layer shift or periodic Z-axis artefacts.
Check mechanics
Depending on the printer:
- belt tension
- loose fasteners
- pulleys
- axis play
- toolhead play
Stable surface
A stable printer base can reduce vibration.
Speed and acceleration
If mechanics are correct:
- reduce speed
- check acceleration
- use the printer's supported input-shaping or resonance-compensation system — don't copy tuning values from an unrelated printer model