AutoCAD

How to Join Lines to Make One Object in AutoCAD?

Joining lines to create a single object in AutoCAD can streamline your drafting process and simplify modifications. The following steps outline how to effectively combine lines and similar objects into a unified entity in AutoCAD 2025.

Step-by-Step Instructions to Join Lines in AutoCAD

1. Access the Home Tab:
Begin by navigating to the Home tab on your AutoCAD ribbon. This is where most editing tools are easily accessible.

2. Choose the Modify Panel:
Within the Home tab, locate the Modify panel, which includes various options for editing your drawings.

3. Select the Join Command:
Click on the Join tool within the Modify panel. This command is essential for merging multiple objects into a single entity.

4. Select Objects to Join:
Once the command is activated, you will be prompted to select the objects you want to join. You can either select a single object or multiple lines, arcs, polylines, and other compatible elements. To do this:

  • Click on each line or shape you wish to combine.
  • Alternatively, hold down the Shift key and click to select additional objects in succession.

5. Valid Objects for Joining:
Confirm that the objects you are trying to join are compatible. Valid options include straight lines, arcs, 3D polylines, polylines, and splines. If any selected objects do not meet this criterion, they will not be combined.

6. Finalize the Join:
After selecting all desired objects, press Enter. AutoCAD will merge the selected elements into a single entity, enabling easier manipulation in future edits.

Additional Considerations When Joining Objects

  • Check Line Endpoints: Ensure that the endpoints of the lines or shapes are touching. If there are gaps, the join may not work as intended.
  • Adjust Elevations: If you encounter issues with joining due to elevation discrepancies, ensure that the objects are in the same plane. You can check this using the Properties palette.
  • Convert to Polylines If Necessary: Sometimes, it may be required to convert lines into polylines before joining. Use the PEDIT command to perform this transformation.

Frequently Asked Questions

1. What types of objects can I join in AutoCAD?
You can join lines, arcs, polylines, 3D polylines, and splines in AutoCAD. Make sure the objects are properly aligned for the join command to work.

2. Why is my join command not working?
The issue might be caused by gaps between the objects, different elevations, or using invalid object types. Ensure that all selected objects are in the same plane and are valid for joining.

3. Can I join more than two objects at once?
Yes, you can join multiple objects simultaneously. Just select all the objects you wish to combine before confirming 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.