Holes/ missing layers (after retraction) in 3d printed objects

  • My printed objects have horizontal holes in them (as seen I the picture below):
    enter image description here

    This doesn't only look bad it also makes the object break at the seems.

    Looking carefully at the printing process I can see that after a retraction there's a small amount of time the hotend isn't extruding plastic.

    Material: PLA, Printer Robo 3D R1+, Slicer: Cura

  • Nir

    Nir Correct answer

    6 years ago

    (answering my own question)

    The problem was the extrusion distance settings in Cura's advanced tab, reducing the value to 1.5mm solved the problem.

    Other problems with the same symptoms:

    • Partially blocked hotend nozzle.

    • Incorrectly configured steps per mm for the extruder motor - this youtube video shows how to test and configure this.

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Content dated before 7/24/2021 11:53 AM

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