Mirror Modifier Seems to Create Duplicate Geometry : r/blender
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How to mirror object in Blender, using Mirror Modifier - cgian.com
Mirror — Blender Manual
Why isn't the other side visible when I activate mirror modifier on Blender? - Quora
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modeling - Why does a duplicated object not mirror correctly? - Blender Stack Exchange
How To Use The Mirror Modifier in Blender - Skillademia