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When I try to remesh, I see this

QuadriFlow: The mesh needs to be manifold and have face normals that point in a consistent direction.

It won't let me remesh. Shift + N won't work and in Face Orientation all I see is red (as per pic). What can I do?

Thanksenter image description here

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  • $\begingroup$ Try scale -1 in edit mode. $\endgroup$
    – lemon
    Commented Feb 26, 2020 at 14:32
  • $\begingroup$ @lemon ??? How does it differs from Shift+N? Any reason why Shift+N would not work in edit mode with all vertices selected? Thank you $\endgroup$
    – vklidu
    Commented Feb 26, 2020 at 14:50
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    $\begingroup$ @vklidu sometimes there are conflicts that make so shift+N fails (I don't say this is the case here or the OP forget to check invert, for instance; don't know). But when it fails that can be an alternative. $\endgroup$
    – lemon
    Commented Feb 26, 2020 at 15:15
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    $\begingroup$ Recalculating normals can fail if the mesh is non-manifold and Blender gets confused between the interior and exterior. Another way to fix it is to select the red mesh in edit mode, use Shift+N and check Inside in the popup box. $\endgroup$
    – stphnl329
    Commented Feb 26, 2020 at 15:40
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    $\begingroup$ @lemon scaling to minus one on each axis did the trick. obvs then you have to rotate and move the object, but great!!! Thanks alot $\endgroup$ Commented Feb 28, 2020 at 17:15

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What worked for me was to first Voxel Remesh it at something like 0.1m, then all of the normals were fixed, I clicked Quad and everything worked fine.

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