AutoCAD

How To Reverse Mirror In AutoCAD?

Understanding the Reverse Mirror Functionality in AutoCAD

Reversing or mirroring a drawing in AutoCAD can greatly enhance design efficiency. This guide provides a detailed walkthrough to effectively utilize the reverse mirror features in AutoCAD, focusing on the necessary steps to achieve desired results.

Step-by-Step Guide to Reverse Mirroring in AutoCAD

1. Access the Mirror Command

Begin by navigating to the Modify panel located on the Home tab. Look for the Mirror command, which is essential for creating mirrored copies of your selected objects.

2. Select the Objects for Mirroring

Click on the command, and AutoCAD will prompt you to select the objects you wish to mirror. Use your cursor to click on each desired object or drag around multiple objects to select them all at once.

3. Define the Mirror Line

After selecting the objects, you will need to establish the line across which the mirror operation will occur:

  • First, click to specify the starting point of the mirror line.
  • Next, click to determine the endpoint of the mirror line. This line acts as the axis along which the selected objects will be inverted.

4. Decide on Object Retention

Once the mirror line is defined, AutoCAD will ask if you want to keep the original objects. You can either press Enter to retain them or type Y to erase the originals. Choose according to your requirements.

Mirroring Text Without Flipping

When you want to mirror text but keep it readable (i.e., without flipping), use the following approach:

  1. When creating the text, ensure it is included as an attribute within a block.
  2. Open the Attribute Definition (ATTDEF) dialog and confirm that the Constant option is not checked. This setting allows the text to remain upright even when mirrored.

How to Mirror in 3D

For users working with 3D models in AutoCAD, the process differs slightly:

  1. Go to the 3D Mirror option located on the Home tab under the Modify panel.
  2. Select the 3D object you wish to mirror.
  3. Define the mirroring plane by selecting three points that outline the plane.
  4. Decide to retain or erase the original object as per your design requirements.

Distinguishing Between Copy and Mirror Features

It’s crucial to understand the difference between copying and mirroring in AutoCAD.

  • A copy creates an identical duplicate that behaves like a clone of the original entity.
  • In contrast, a mirror produces an entirely new object that is a reversed version of the original, although they may interact with certain commands differently.

Adjusting Mirror Settings

To customize the mirror function in AutoCAD:

  1. Navigate back to the Modify panel and select Mirror.
  2. Follow the selection and mirror line steps as previously described.
  3. Before finalizing, ensure that the settings align with your project goals.

Frequently Asked Questions (FAQ)

Can I mirror objects in older versions of AutoCAD?

Yes, the mirror command has been a standard feature across multiple versions of AutoCAD, including AutoCAD 2025. The basic functionalities remain consistent, ensuring usability for seasoned and newer users alike.

How can I prevent text from being mirrored along with other objects?

To maintain text orientation during a mirroring operation, set the MirrText command to zero. This adjustment allows text objects to remain upright while the rest of the components are mirrored.

Is there a shortcut for the mirror command in AutoCAD?

While there isn’t a specific keyboard shortcut assigned to the mirror command by default, you can always customize your key commands in AutoCAD to create a shortcut that best fits your workflow. Just go to the CUI (Customize User Interface) and create a new shortcut for the mirror command if needed.

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.