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I 3D modeled a cartoon car using Blender, mostly using add and subtract with boolean tools. When I export to Ultimaker Cura, I get these cuts along the model. Does anyone know why this is happening? Appreciate any feedback on the model.

enter image description here

enter image description here

The blender file: https://github.com/dantedaiki/jQuery-File-Upload/blob/master/Cartoon%20Car.blend

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  • $\begingroup$ That is not uncommon for Blender created files, look into these questions. It probablyhas something to do with the normals of the surfaces being inconsistent, an online STL fixing utility like NetFabb may help. $\endgroup$
    – 0scar
    Dec 16 '20 at 7:00
  • $\begingroup$ Thank you! It worked. $\endgroup$ Dec 16 '20 at 16:27
  • $\begingroup$ You're welcome! Please accept the answer below so we reduce the unanswered question list! Thanks! $\endgroup$
    – 0scar
    Dec 16 '20 at 18:43
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In blender, you can occasionally have faces with flipped normals. Those areas then are "inside out". Such areas are just ignored in Cura. Fixing the files is as simple as recalculating the normals, but you'd best use a program like NetFabb for for that.

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