How to Join Lines in AutoCAD 2020?

Steps to Join Lines in AutoCAD 2025

Joining lines in AutoCAD can help create clean and continuous drawings. Below are the detailed steps to follow when you want to join lines, arcs, or polylines.

Accessing the Edit Polyline Tool

1. Navigate to the Home tab on the ribbon.
2. Locate the Modify panel.
3. Click on the Edit Polyline option to start the joining process.

Selecting Lines to Join

1. Click on the polyline, line, spline, or arc that you would like to modify.
2. When prompted at the command line, type j and press Enter. This activates the Join command.
3. Now, select the lines, arcs, or splines that you want to join together. Ensure that they are end-to-end to be effectively joined.
4. After selecting the desired objects, press Enter to finish the command.

Troubleshooting Joined Lines

If you encounter any issues and the lines do not join:

• Check for gaps between the objects. If there are gaps, the lines will not automatically connect.
• Ensure that the lines are at the same elevation. You can check this using the Properties palette, which displays Start Z / End Z values.
• If necessary, adjust the elevation or zoom in to assess any minute discrepancies that might be hindering the joining process.

Combining Lines into Polylines

If you want to combine multiple lines into a single polyline:

1. Follow the initial steps to access the Edit Polyline tool as described earlier.
2. Type j or simply click the join option when prompted.
3. Select all lines, arcs, or polylines that you wish to combine, ensuring they are adjacent.
4. Press Enter to create a single polyline that encompasses all selected objects.

Using PEDIT to Join Lines

The PEDIT command, or Polyline Edit command, is another useful tool for joining two-dimensional polylines:

1. Type PE into the command line and press Enter to activate the PEDIT command.
2. Select the line or arc you want to convert into a polyline.
3. You will be prompted to convert that object. Confirm by typing Y for Yes.
4. Continue by using the Join option, then select other objects to include in the polyline and press Enter when done.

Applying Fuzz Join for Non-Connecting Lines

If the lines you want to join do not touch:

1. Engage the PEDIT command again by typing PE and pressing Enter.
2. Select M for Multiple option, then choose all the objects that need joining.
3. If prompted, type Y to convert any necessary objects to polylines, making sure to maintain a cohesive flow.

Flattening Objects in AutoCAD

When working across multiple elevations, flattening your objects may be essential before joining:

1. Turn off any hatch layers to avoid complications while selecting objects.
2. Deploy the FLATTEN command by typing FLATTEN at the command line.
3. Select all objects you want to flatten and press Enter.
4. When prompted about removing hidden lines, follow your preference by typing N for No.

FAQ

What should I do if my lines won’t join in AutoCAD?

Check for gaps or differences in elevation between the lines. Use the Properties palette to inspect any Z values.

How can I convert multiple lines into a single polyline?

Use the PEDIT command, then select Multiple and choose all lines you want to merge into a single polyline.

How do I create a curve between two lines in AutoCAD?

Select the Curves drop-down on the Draw panel in the Home tab. Then select the two lines and define the curve by entering length or distance prompts.