AutoCAD

How to Mirror Objects in AutoCAD?

Understanding the Mirror Functionality in AutoCAD

The ability to mirror objects in AutoCAD is essential for efficiently creating symmetrical designs. This functionality enables users to produce a reflection of an object across a defined plane, allowing for streamlined workflows and improved accuracy in draft designs.

Steps to Mirror 3D Objects in AutoCAD

  1. Access the 3D Mirror Tool
    Navigate to the Home tab, then locate the Modify panel, and click on the 3D Mirror option.

  2. Select the Object
    Click on the object you wish to mirror. Ensure you’ve carefully selected the correct entity as this will be mirrored according to your next steps.

  3. Define the Mirroring Plane
    Specify three distinct points that will establish the mirroring plane. This is crucial for determining how the object will reflect.

  4. Retain or Delete the Original
    After defining the plane, AutoCAD will prompt you. To keep the original objects, simply press Enter. If you prefer to delete them, type "y" and hit Enter to confirm the action.

Utilizing the Mirror Command

The Mirror command is fundamental when working within AutoCAD, creating a reverse duplicate of any selected object. Here’s how to execute this command effectively:

  1. Invoke the Mirror Command
    Type "MIRROR" in the command line or find it under the Modify panel.

  2. Choose Your Objects
    Select the objects you want to mirror. Once you make your selection, confirm by pressing Enter.

  3. Designate the Mirror Line
    AutoCAD will prompt you to pick two points that form a line. This line will act as the axis of reflection.

  4. Decide on the Source Object
    After establishing the line, you will be given an option to retain the original object or delete it. Choose accordingly and finalize the command by pressing Enter.

Flipping and Copying Objects

To effectively flip and copy objects, follow these steps:

  1. Locate the Copy Function
    In the Home tab, select the Modify panel, then find Move, Copy, and Rotate. Choose the Copy option.

  2. Select the Object
    Click on the object you intend to copy and then press Enter.

  3. Specify the Rotation Point
    Choose a point around which you want to rotate the copied object.

  4. Place the Object
    Determine where you want the new copy to reside by clicking in the drawing area.

Flipping 3D Models

For flipping a 3D model:

  1. Access the Rotate 3D Tool
    Open the Home tab and navigate to the Modify panel to select Rotate 3D.

  2. Select Your Model
    Choose the 3D object you need to flip.

  3. Define the Rotation Axis
    Indicate the start and endpoint of the rotation axis.

  4. Set the Angle of Rotation
    Finally, define the angle by which you want to rotate the model to complete the command.

Creating a Mirror in Inventor

For users working in Inventor:

  1. Initiate the 3D Sketch
    On the ribbon, select the 3D Sketch tab and locate the Pattern panel, then click on Mirror.

  2. Select Geometry
    Choose the geometric shapes that you wish to mirror.

  3. Designate the Mirror Plane
    Click on the Mirror Plane option in the dialog or right-click and select Continue.

  4. Confirm the Mirror
    After selecting the mirror plane, click Apply to finalize the mirror action.

Mirroring Text in AutoCAD

To create mirrored text:

  1. Access Text Options
    Right-click the text box and select Format Shape.

  2. Change 3D Rotation Settings
    Navigate to the 3-D Rotation section and adjust the X setting to 180 degrees.

  3. Finalize Your Changes
    Click OK, and the text will reflect as a mirror image, making it suitable for various design applications.

Difference Between Copy and Mirror

Understanding the distinction between copying and mirroring in AutoCAD is important:

  • Copy: Creates an exact duplicate that functions similarly to the original in most commands.
  • Mirror: Generates a new entity with its unique identity, which, while affected by some commands like Press Pull, does not interact with others like Extrude.

Mirroring Components in Autodesk

To mirror components in Autodesk:

  1. Select the Mirror Option
    Click on the Assemble tab and then the Pattern panel to find the Mirror function.

  2. Choose Components
    Select the components in the graphics window or the assembly browser.

  3. Set the Mirror Plane
    In the Mirror Components dialog box, click on Mirror Plane and select the desired plane (YZ, XZ, or XY).

FAQs

1. Can I mirror 2D objects in AutoCAD?
Yes, the mirror command can be used for both 2D and 3D objects, allowing for symmetrical designs regardless of the dimensionality.

2. How do I undo a mirror operation?
If you’ve made a mistake during the mirroring process, you can use the Undo command (Ctrl + Z) to revert the last action.

3. Will mirrored text remain editable?
Yes, once mirrored, the text can still be edited, but note that the content may display differently based on the mirroring applied.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.