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I am Attempting to print this, from Blender enter image description here But Cura decides to fill in the middle part of the model. enter image description here I exported and imported the model from an STL file.

If anyone can answer this, that would be greatly appreciated.

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    $\begingroup$ Likely the STL file is not actually valid (doesn't make up a manifold). I'm not sure if getting bad STL files like that is a common issue that can happen with Blender; it happens with various low-quality tools. $\endgroup$ Feb 21, 2020 at 4:08
  • $\begingroup$ :D there are faces inside the infill area. $\endgroup$ Feb 21, 2020 at 8:18
  • $\begingroup$ Have you tried to heal your model in Meshlab, then save and import into Cura? $\endgroup$
    – Davo
    Feb 21, 2020 at 19:35
  • $\begingroup$ Nope, I've never tried Meshlab, never even heard of it until now. $\endgroup$
    – Artimeises
    Feb 22, 2020 at 2:28

2 Answers 2

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Try disabling the "Union Overlapping Volumes" option on Mesh Fixes section. Worked for me.

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I would recommend using an actual CAD/CAM program, such as Autodesk Fusion 360, instead of using a 3d model program. Not only will this be able to directly export you finished model to Cura, and the models are made in a way that works with a 3d printing slicer, there will be more help around 3D printing for it.

Although it is slightly difficult to use to start with, as you become more proficient, it is a very powerful tool to have. . Fusion 360 is free for hobbyists or students. See this link for help activating: https://www.autodesk.com/campaigns/fusion-360-for-hobbyists.

Another option would be SolidWorks, although you do have to pay for this option, but it is much simpler to work with in my opinion.

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  • $\begingroup$ SolidWorks is so extremely expensive -- $4000+ USD -- that "you have to pay" does not really describe it. $\endgroup$
    – ikrase
    May 20, 2020 at 20:01
  • $\begingroup$ Other free option that are easier to use for beginners: Design Spark Mechanical. Not as powerful though. $\endgroup$
    – Trish
    May 21, 2020 at 6:51
  • $\begingroup$ @Trish Thanks for suggesting that. I will edit my post and add it. $\endgroup$ May 21, 2020 at 14:17
  • $\begingroup$ I've never had problems with models from FreeCAD, OpenSCAD, or QCAD, either. $\endgroup$
    – Davo
    May 21, 2020 at 18:00
  • $\begingroup$ @Davo I'll edit my answer later to include these suggestions. I first need to try them though just to make sure there are no problems, or if there is anything confusing about it. Thanks. $\endgroup$ May 22, 2020 at 14:39

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