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Legacy:VolumetricBuilder
From Unreal Wiki, The Unreal Engine Documentation Site
Object >> BrushBuilder >> VolumetricBuilder (Package: Editor)
The Volumetric brushbuilder is one of the built-in UnrealEd brushbuilders. It is the button on the bottom right of the builder section of Unreal Ed.
It is used for making decorations like torches and chains. Just pick a texture and click and it will for 2 sheets that intersect each other at 90 degrees in the middle.
