How Do I Edit a Custom Linetype in AutoCAD?

How Do I Edit a Custom Linetype in AutoCAD?

AutoCAD provides a vast library of linetypes for you to use in your drawings. However, there may be instances where you need to create a custom linetype or make changes to an existing one. In this tutorial, we will walk through the steps of editing a custom linetype in AutoCAD.

Step 1: Accessing the Linetype Manager

To begin with, let’s open the Linetype Manager. You can do this by typing ‘LINETYPE’ in the command line or navigating through the ‘Manage’ tab and selecting ‘Linetype’ from the ‘Properties’ panel.

Step 2: Selecting the Linetype to Edit

Once you have opened the Linetype Manager, you will see a list of all available linetypes. Scroll through the list and find the linetype you want to edit. Select it by clicking on its name.


  • If you want to create a new linetype instead of editing an existing one, click on ‘Load..’ and follow the steps to create your custom linetype.

Step 3: Modifying Linetype Properties

The selected linetype’s properties will appear in the lower part of the Linetype Manager window. Here, you can modify various aspects of the linetype:

  • Name: Change or rename your linetype by typing a new name in this field.
  • Description: Add or update a description for your linetype to provide more information about its purpose or appearance.
  • Pattern Length: Adjust the pattern length by entering a new value in this field. The pattern length determines the spacing between the linetype segments.
  • Pattern Definition: This is where you define the segments that make up your linetype. Each segment can be a combination of dots, dashes, and spaces.

To modify the pattern definition, click on the ‘. Edit’ button next to it. This will open the ‘Linetype Pattern’ dialog box.

Step 4: Editing Linetype Pattern

The ‘Linetype Pattern’ dialog box allows you to visually edit and customize your linetype’s pattern. You will see a grid with squares representing each segment of the linetype.


  • You can add a new segment by clicking on an empty square in the grid or remove an existing segment by clicking on a filled square.
  • The length of each segment can be adjusted by dragging its edges horizontally.
  • You can also change the type of each segment (dot, dash, or space) by selecting it from the ‘Segment Type’ drop-down menu.

Once you are satisfied with your changes, click ‘OK’ to save them and close the ‘Linetype Pattern’ dialog box. Your custom linetype is now ready to use!

Step 5: Applying the Edited Linetype

To apply your edited linetype to objects in your drawing, select them and open their properties in the ‘Properties’ panel. Locate the ‘Linetype’ property and choose your custom linetype from the drop-down menu.

Congratulations! You have successfully edited a custom linetype in AutoCAD. Now you can create unique linetypes that suit your specific design requirements.

Remember, linetypes are an essential visual element in your drawings, and with AutoCAD’s flexibility, you can easily customize them to enhance the clarity and aesthetics of your designs.