Unify Normals

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Menu Path: Modify > Unify Normals


The Unify Normals command will attempt to align each selected face's normal vector to those of the faces around it, or, if in object selection mode, it will attempt to align all of the object's face's normal vectors to each other. On unusual geometries a complete unification of normals may be impossible, but in the majority of cases this will have the effect of finding an "interior" and "exterior" of the object, with all normals either facing in or facing out.


  • You can set an object to display its normals by choosing Show Normals. (See Object Display Mode.)
  • Several operations, such as Shell and Boolean, require that an object's normals be aligned in a certain way (usually all pointing out).