Figure 3.27 - Auto Merge option

With Auto Merge enabled, you can set the minimum distance used for

merging polygon elements. The default distance (0.001) will make sure

you have only vertices sharing the same location receiving an Auto

Merge. Leave Auto Merge enabled to make Blender remove all those

vertices without pressing the M key or the Context Menu.

3.7 Using the Mirror tool for modeling

A large number of objects that are subject to a 3D modeling in Blender

will present some kind of symmetry. Working with any object with a