Combines objects together and extracts all volumes.

Boolean Difference, Union, or Intersection all discard certain pieces. Boolean Merge cuts up objects in a similar way as those other commands except it keeps all the solid pieces. Merge can be used on solids, surfaces, or curves in different combinations.

Merges split up edge fragments into longer combined edges.

The edges must be tangent where they touch each other in order to be merged together into a single edge.

The Merge command does not currently have a button in the UI, it must be set up on a keyboard shortcut (under Options > Shortcut keys) or have its command name typed in (press Tab first to enter a command name) to launch it.