Blender and 3D printing beginner here.

First of all I'm using Ultimaker Cura and Blender of course, with an Ender 3 Pro to print.

I need to print this cylinder with extruded paths. How do I go about it? I'm struggling to set the printer to support the structure internally. The blue on this image is an external support. The grey parts at the top of the half cylinder laying down is just absent of filament, so when I print this it gets to this point and basically breaks.

So how can I fix this? I used a solidify modifier in Blender but it doesn't seem to make a difference if I do or don't..

Any help would be much appreciated enter image description here

  • 3
    $\begingroup$ Have you tried printing this in the position that's in the bottom right? It's possible your overhangs won't work, but the rest should print just fine. $\endgroup$
    – Mast
    Oct 10, 2021 at 17:17
  • 1
    $\begingroup$ Blender tends to have inverted surfaces. It appears that the outer shell is pretty much "inside out" - what for blender doesn't matter, is crucial for Cura. $\endgroup$
    – Trish
    Oct 11, 2021 at 20:47
  • $\begingroup$ @Trish that's the solution, many questions similar to this one have been caused by Blender. Didn't you wrote a previous elaborate answer? Maybe we could link it here, or possibly flag for duplicate. $\endgroup$
    – 0scar
    Oct 11, 2021 at 21:26
  • $\begingroup$ 3dprinting.stackexchange.com/a/15881/8884 & 3dprinting.stackexchange.com/a/14525/8884 $\endgroup$
    – Trish
    Oct 11, 2021 at 22:24
  • $\begingroup$ please edit the question with a picture of the preview of the models, as that shows what might lead to the errors you are seeing to the knowing eye. Another way would be to share the model so others can inspect it. $\endgroup$
    – Trish
    Oct 12, 2021 at 21:31


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