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Cura Slicer Fail (Fills a big Hole)

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Posted · Cura Slicer Fail (Fills a big Hole)

Hi Ultimaker Community,


the Cura Slicer fills ab big hole in a cover plate that I want to print.

It is a hole for a antenna of a orangePi Zero.

I build a case for this OrangePi in blender.


The strange part is that the hole is shown in the cura edit mode

but is gone in the preview mode :-/


Can you pleas help me?



Cura Version: 4.2.1

Printer: Creality CR-10

OS: Windows 10 LTSC 64bit

orange-dach-2.3.stl blender.zip

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    Posted (edited) · Cura Slicer Fail (Fills a big Hole)

    I suspect your model is not watertight, or “non-manifold”, or contains internal geometry. Blender is a mesh editor and so is very easy to have these problems. As such, Cura gets confused about what is inside vs outside.


    Check “X-ray mode” in the model preview—any red is bad. Try the Mesh Tools from the Cura marketplace. Or try the repair tool at service.netfabb.com. Requires registration, but is free.

    Edited by johnse
    Fix misspelling
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    Posted · Cura Slicer Fail (Fills a big Hole)

    Many thanks, Martin.  I had the same problem with Cura filling what it should not and could not get it solved until I did this.  The problem is the default is that overlapping volumes will be unioned and nowhere is it mentioned that that is the case.  I just un-checked that box and model prints as I specified it.


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