Mirroring Entities

Commands: MIRROR and MIRROR3D

The Mirror command creates a mirror image of a selection set. The selection is mirrored about a mirror line, which you define by specifying two points. You can choose to either delete or retain the original entities.

The Mirror3d commands creates a mirror image of selected entities in three-dimensional space. In this case the selection is mirrored about a mirror plan, which can be defined by either specifying three points, selecting an existing two-dimensional planar entity, aligning the plane parallel to the xy, yz, or xz plane of the current UCS or aligning the plane with the current view. You can choose to either delete or retain the original entities.

The Copy option of the Grips Editing commands allows to create multiple copies of the entities being stretched, moved, rotated, mirrored or scaled.

Mirroring entities about a line

1. Do one of the following:

   • Click the Mirror tool button () on the Modify toolbar.
   • Choose Mirror in the Modify menu.
   • Type mirror or MI in the command bar.

   You are prompted: Select entities to mirror:

2. Select the entities then right click or press Enter.
   You are prompted: Start of mirror line.

3. Specify the start point of the mirror line.

4. Specify the endpoint of the mirror line.
   You are prompted: Delete the original entities? <N>

5. Do one of the following:

   • Press Enter to keep the original entities.
   • Type Y , then press Enter to delete the original entities.
   • Choose Yes-Delete entities in the context menu.

Mirroring entities about a plane

1. Do one of the following:

   • Click the 3D Mirror tool button () on the Modify toolbar.
   • Choose 3D Mirror in the Modify menu.
   • Type mirror3d in the command bar.

   You are prompted: Select entities:

2. Select the entities then right click or press Enter.

   You are prompted: Define mirror plane by: Entity/Last/View/Zaxis/XY/YZ/ZX/<3points>:

3. Specify the first point of the mirror plane.

4. Specify the second point of the mirror plane.

5. Specify the third point of the mirror plane.
   You are prompted: Delete the original entities? <N>

6. Do one of the following:

   • Press Enter to keep the original entities.
   • Type Y, then press Enter to delete the original entities.
   • Choose Yes-Delete entities in the context menu.