How do you mirror actions in edit mode in Blender?

To mirror a selection in edit mode in Blender, you can use the mirror function along a specific global axis.

Here's how:

1. Select the elements you want to mirror (vertices, edges, or faces).
2. Press Ctrl + M to activate the mirror tool.
3. Press X, Y, or Z to specify the global axis along which you want to mirror the selection.

Example:

If you want to mirror your selection across the X-axis:

1. Select the desired mesh elements.
2. Press Ctrl + M.
3. Press X.

This will create a mirrored copy of your selection on the other side of the X-axis.

Additional Notes:

• This method mirrors the selected elements in place. If you want to duplicate and mirror, you typically duplicate the elements first (Shift + D), then mirror them using the described method (Ctrl + M, then X, Y, or Z).
• Ensure your object's origin point is appropriately positioned, as it will act as the center of the mirroring operation. To change the origin, you can use Object > Set Origin.