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Blender (and others) generate unwanted support blob

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Posted · Blender (and others) generate unwanted support blob



I'm currently using Blender 3.1.2 and Cura 5 on windows 64 bit.


When I create any object in Blender and export it as an STL which I then open in Cura I get a disc shadow which appears in the top right hand corner of the build plate. If I then add support to the intended object then this disc also gets support and my S5 prints both the intended object and the blob. This has happened over the past year or so with different versions both of Blender and Cura. The attached photo's show a simple bisected cube with nothing else added to the design.


Does anyone else have this issue and if so does anyone know a way of fixing it? It wastes both time and money...


I've attached Cura screen shots, the stl file and a zipped version of the blender file.




Blob no support.jpg

Blob with support.jpg

blob.stl blob.zip

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    Posted · Blender (and others) generate unwanted support blob

    It's a Cura feature.  It's called a "support tower".  Enter "tower" in the settings search window just above your settings and you can see all the pertinent settings including the ability to disable it.


    It increases the quality of your print significantly at times.  when one nozzle is printing, the inactive nozzle doesn't cool fast enough and a bit of filament leaks out.  when you start printing with that nozzle again, without the wipe tower, you get that tiny sausage attached to your print and also it then underextrudes for the first cm or so.


    You can certainly disable it.  

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