Ghosting or Ringing

"Ghosting" (or "ringing") is a defect that appears as ripples or "ghosts" on the surface of a print, typically following sharp corners or distinct features.

What Causes Ghosting?

This artifact is caused by vibrations. When the print head abruptly changes direction or stops, inertia causes the entire system to vibrate. These vibrations are transferred to the part and become visible on its surface.

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Causes and Solutions

1. Loose Belts

   • Cause: Loose belts on the X or Y axes are the most common cause of ghosting. The slack in the belt allows vibration to propagate without being dampened.
   • Solution: Check and tighten your belts. They should be taut enough to produce a low-pitched sound when plucked, but not so tight that they restrict movement.

2. Unstable Printer Frame

   • Cause: If the printer's frame is not rigid or if the printer is on a wobbly surface, any vibration will be amplified.
   • Solution: Ensure all frame screws are tight and that the printer is on a solid, stable surface.

3. Print Speeds and Acceleration Too High

   • Cause: Higher speeds and accelerations generate more inertia and, consequently, more vibration.
   • Slicer Solution: Reduce the Print Speed, especially the Outer Wall/Perimeter Speed. For more advanced control, reducing the Acceleration and Jerk values in the slicer will have a significant impact on reducing ghosting.

   

Illustration of a print with faint, repeating patterns on its surface.