Boolean Operations: 10+ Non-manifold Fixes

Gleb Alexandrov writes:

Why my boolean operations produce non-manifold meshes with holes in Blender? There are many possible reasons, here are 10+ most common ones.

  • Non-manifold geometry
  • 3D-Print Toolbox add-on for Blender
  • Interior faces
  • Duplicate faces
  • Flipped normals
    and more.

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