AutoCAD

How To Change Default Line Width In AutoCAD?

Understanding Line Width in AutoCAD

To effectively manage your designs in AutoCAD, understanding line width is crucial. Line width affects how lines are rendered and perceived, which is essential for creating professional drawings.

Default Line Width in AutoCAD

AutoCAD defaults to a line width of 0.01 inches. This measurement is pertinent as it sets the baseline for all new lines drawn unless modified. Adjusting this setting can enhance visibility and ensure that your drawings conform to specific standards.

Adjusting Default Polyline Thickness

If you need to modify the default thickness of polylines in AutoCAD, follow these steps:

  1. Go to the Home tab and find the Modify panel.
  2. Click on Edit Polyline.
  3. Select the polyline you wish to adjust.
  4. Type e to enter Edit Vertex mode. The first vertex will display an ‘X’ to signal your selection.
  5. Enter the command w for Width adjustments.
  6. Specify the starting and ending widths for the polyline.
  7. Confirm your changes by pressing Enter to proceed to the next vertex or type x to exit the editing mode.

Turning Off Line Width Visibility

If you want to disable the display of line width in AutoCAD, proceed with the following steps:

  1. Enter the command LWDISPLAY in the command line.
  2. Set the value to Off (or 0) to hide line weights.
  3. Alternatively, you can utilize the Show/Hide Lineweight button, which can be accessed from the status bar.

Changing Default Line Weight Settings

To modify the default line weight in AutoCAD, do the following:

  1. Navigate to the Home tab and find the Properties panel.
  2. Click on Lineweight to reach the settings.
  3. Select Lineweight Settings from the drop-down menu.
  4. In the dialog box that appears, choose the desired line weight from the list.

Working with Global Width

To set global widths for objects in AutoCAD, follow these steps:

  1. Select the desired line or polyline.
  2. Access the Properties palette and alter the Global Width setting.
  3. For bulk changes, use the QSELECT command to select multiple polylines and adjust their widths collectively.

Reducing Polyline Thickness

If you require a reduction in the thickness of a polyline, follow these steps:

  1. Activate the Edit Polyline tool.
  2. Select the polyline you want to modify.
  3. Choose the Width option from the prompt menu or type W and press Enter.
  4. Enter a narrower value for the width and confirm by pressing Enter.

Displaying Line Thickness in AutoCAD 2025

To make line thickness visible on your drawings, ensure this setting is enabled:

  1. Look for the Show/Hide Lineweight option on your status bar, located in the lower right corner of the application.
  2. If the thickness is still not visible, check your display settings, including the display resolution, which might impact how the line width appears.

Frequently Asked Questions

1. Why does my line appear thinner than expected?
This may be due to the display resolution or line width settings not being correctly configured. Ensure the line weight is set appropriately and that the Show/Hide Lineweight option is enabled.

2. How can I ensure uniform line weights across my drawing?
Check your layer settings and lineweight settings to ensure consistency throughout your drawing. Setting a standard lineweight for all layers can help maintain uniformity.

3. Is it possible to set a default line weight for all future drawings?
Yes, you can save your current settings as part of a template file in AutoCAD. This way, each new drawing will start with your preferred line weight and other settings without needing to adjust them each time.

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.