AutoCAD

How To Add Thickness To A Polyline In AutoCAD?

Understanding Polyline Thickness in AutoCAD

Adjusting Thickness for Selected Objects

To apply thickness to a polyline in AutoCAD, follow these steps:

  1. Select the Polyline: Click on the polyline or the objects you want to modify to highlight them.
  2. Access Properties: Right-click on the selected polyline and select the “Properties” option from the context menu.
  3. Modify Thickness: In the Properties palette that appears, locate the “Thickness” field. Enter the desired thickness value. The polyline will now display the modified thickness in your drawing.

Setting Default Thickness for Polylines

To change the default thickness for newly created polylines, do the following:

  1. Initiate Edit Polyline: Navigate to the Home tab, find the Modify panel, and click on “Edit Polyline.”
  2. Choose the Polyline: Select the specific polyline you wish to adjust.
  3. Edit Vertex Settings: Type e for Edit Vertex when prompted. The vertices will be highlighted in the drawing window.
  4. Set Width: Type w to indicate you want to change the width and then specify the starting and ending widths as required.
  5. Exit Editing: Press Enter to continue to the next vertex or type x to exit the editing mode.

Increasing Line Thickness in AutoCAD 2025

To enhance line thickness for existing lines or polylines, use the following method:

  1. Open Properties Panel: Ensure that no objects are selected. Click on the View tab, then find and click on the Properties panel.
  2. Select Lineweight Setting: In the Properties window, look for the Lineweight section. Click the drop-down list and select “Lineweight Settings.”
  3. Choose Desired Lineweight: In the dialog box that appears, pick a suitable lineweight value from the list provided. This adjustment will affect how lines appear in your drawing.

Reasons for Increased Polyline Thickness

Several factors can lead to an unintended increase in polyline thickness in your AutoCAD drawings:

  • If the polyline has a global width setting that is greater than a basic line width, it may appear thicker than expected.
  • Lineweight settings in your drawing’s Style Table might also be influencing the thickness effect. Always check these settings to ensure they align with your design intentions.

How to Change Polyline Thickness

To add or modify the thickness of any existing polyline, you can:

  1. Select the Polyline: Begin by clicking on the polyline to highlight it.
  2. Invoke Properties Palette: Right-click and choose the “Properties” option.
  3. Alter Thickness Value: In the General tab of the Properties palette, locate the thickness field and input your desired value.

Working with Ellipse Thickness

Standard true ellipse objects do not inherently possess thickness. To apply thickness:

  1. Create a Polyline Ellipse: Use the command PELLIPSE on the command line.
  2. Set Thickness: Upon prompting, input the desired thickness value—this will ensure your ellipse takes on a polyline representation with the specified thickness.

Converting Lines to Polylines

If you need to convert existing line segments to a polyline for consistent thickness application:

  1. Activate PEDIT Command: Type PEDIT in the command line.
  2. Select Multiple Entities: Choose M for Multiple, then highlight the lines or arcs.
  3. Confirm Conversion: When prompted, type Y to convert lines and arcs into a single polyline.
  4. Complete Command: Confirm the precision and exit the command by pressing Esc.

Resetting Polyline to Default Thickness

In cases where your polyline thickness appears altered:

  1. Activate Polyline Command: Type Pline in the command line and click within the drawing window to select the polyline.
  2. Adjust Width: Type L, then enter 0, and press Enter to revert to the default thickness.

FAQ Section

1. How do I check the current line thickness of my polylines in AutoCAD?
You can check the current thickness by selecting the polyline, right-clicking, and choosing Properties. The thickness will be displayed in the Properties palette.

2. Can I set different thickness values for different segments of a polyline?
Yes, by using the Edit Vertex feature, you can assign different widths to each vertex of the polyline, allowing it to have varying thickness along its length.

3. Is it possible to change thickness after a polyline has been created?
Absolutely. You can modify an existing polyline’s thickness by selecting it, accessing the Properties palette, and entering the new value in the thickness field.

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.