AutoCAD

How to Undo Join in AutoCAD?

Understanding the Join Command in AutoCAD

The Join command in AutoCAD is used to combine multiple geometric objects, such as lines, polylines, arcs, and circles, into a single entity. This is particularly useful when creating complex shapes or structures. However, there may be instances when you need to reverse this action and separate the joined components.

What Does It Mean to Undo Join in AutoCAD?

When you “undo join” in AutoCAD, you’re essentially aiming to separate previously combined objects back into their original forms. While AutoCAD doesn’t have a direct “Undo Join” command, there are steps you can follow to achieve the separation of various geometries.

Steps to Separate Joined Objects in AutoCAD

1. Identify the Joined Objects

Before you can separate your objects, you first need to select the combined geometry. Familiarize yourself with the components you wish to work with.

2. Use the Explode Command

To disassemble joined objects, utilize the Explode command.

– Command Prompt: Begin by entering the command “EXPLODE” or simply type “E” and hit Enter.
– Select the Joined Object: Click on the geometric shape or object that you wish to explode.
– Press Enter: Once you’ve selected the object, press Enter to execute the command. The components will revert to their original entities.

3. Review Object Properties

After exploding the objects, make sure to review the individual parts to check for any changes in their properties, such as color or linetype, which may have been altered during the process.

Manual Method to Select and Edit Objects

Sometimes, manual selection and editing may be required.

1. Use Selection Cycling

– Activate Selection Cycling: Type “SELECTIONCYCLING” in the command prompt and set it to 2. This allows you to easily select overlapping objects.
– Identify Objects: Click to select the objects you want to separate.

2. Edit Individually

Once the components are separate, you may want to modify them individually or join other objects as needed.

Alternative Approach: Undoing Changes with Command History

If you accidentally joined objects and need to revert the entire process:

– Command History: Use the CTRL + Z shortcut to undo recent actions, including joining objects. This works if the changes made are still within the undo limit.

FAQs

1. Can I directly reverse a Join command in AutoCAD?

No, there isn’t a direct “Undo Join” command. However, use the Explode command to separate the combined objects.

2. What happens to the properties of objects after using Explode?

The properties, such as color and linetype, might change after the Explode command. Always review them post-explosion.

3. Is there a way to prevent accidental joining of objects in AutoCAD?

To avoid accidental joins, adjust your selection settings in the Options menu and ensure you are aware of which objects are selected before using the Join command.

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.