Reply To: Inacurate normals.

why was the normals wrong anyway? 

It’s hard to say, at least from my limited technical knowledge of normal calculation. I can say from experience that sometimes Blender’s consistent normal tool will simply pick the wrong direction maybe 20% of the time. I’ve seen it happen where adding one face makes the tool flip normals the wrong way when it was setting them correctly before the face was added. In the end I chalk it up to a minor annoyance and move on..

@spikeyxxx do you have any insight on normal direction calculation?

Some meshes that have shared object data and modifiers do not show mirrored object in edit mode, even though “display modifier in edit mode” is checked

What happens if you enable this toggle?