Chamfer

The Chamfer tool is used to create a chamfer or flat bevel at the intersection of boolean operators.
It is not a general purpose chamfer tool, like blenders bevel tool is.

Chamfer can deal with tricky geometry overlaps and significantly reduce manual cleanup work as a result of these overlaps. It also has independent, per-side loop slide properties.

Selection

Select a loop of edges or vertices. It should be a cyclic selection, otherwise non-manifold geometry will be created.

cyclic edge loop at boolean intersection, a vert loop is fine as well

Using Chamfer

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