AutoCAD

How to Draw Broken Line in AutoCAD?

Understanding Broken Lines in AutoCAD

Broken lines, often represented by dashes or a series of short strokes, are useful for denoting different features in drawings. Whether you’re signaling an invisible boundary or outlining specific components in technical plans, grasping how to effectively draw broken lines in AutoCAD can enhance the clarity and professionalism of your designs.

Step-by-Step Guide to Drawing Broken Lines in AutoCAD

Step 1: Set Up the Drawing Environment

  • Open AutoCAD 2025 and create a new drawing or open an existing one where you wish to add broken lines.
  • Ensure that your workspace is optimized. Zoom into the area where you want to draw your broken line for better precision.

Step 2: Access the Linetype Manager

  • Type LINETYPE into the command line and press Enter. This will open the Linetype Manager window.
  • If there’s no broken line linetype loaded in your current settings, click on the Load button.

Step 3: Load the Desired Linetype

  • From the list that appears, scroll down to find a linetype labeled ‘DASHED’ or ‘DASHED2’ and select it.
  • Click OK to apply this linetype to your drawing, and then close the Linetype Manager.

Step 4: Drawing the Broken Line

  • Type PLINE or POLYLINE into the command line and press Enter. This command allows you to draw multiple connected segments.
  • Specify the starting point by clicking on the workspace or entering coordinates manually.
  • As you progress, you can define additional points or use the Arc option to create curves as necessary.
  • After setting the points, complete the polyline by pressing Enter.

Step 5: Apply the Dashed Linetype

  • Select the polyline you’ve just drawn. It should become highlighted.
  • In the Properties palette (which you can open by typing PROPERTIES), locate the ‘Linetype’ option.
  • From the drop-down menu, select the dashed linetype you loaded earlier. The polyline will now visually reflect the broken line style.

Step 6: Adjusting Line Weight (Optional)

  • If you want your broken line to stand out even more, consider adjusting its line weight. In the Properties palette, find the ‘Lineweight’ setting, and choose a suitable thickness for your broken line.

Step 7: Finalize Your Drawing

  • Zoom out to review the entire drawing as it will appear upon printing. Adjust any elements as necessary to ensure clarity and professionalism.
  • Save your work regularly to prevent data loss.

Frequently Asked Questions

What are the benefits of using broken lines in AutoCAD?
Broken lines help convey specific information visually, such as indicating that a line is not a boundary or signifying hidden features. They improve the readability of technical drawings and enhance the overall interpretation of designs.

Can I customize the appearance of dashed lines?
Yes, AutoCAD allows for customization of linetypes, including the length and spacing of dashes. You can create your own linetype definition if the existing ones do not meet your needs.

What should I do if the dashed line does not appear as expected?
Ensure you have correctly loaded the desired linetype in the Linetype Manager, and verify that the properties of the polyline are set to display the selected linetype. Also, check your zoom level; sometimes, the appearance may change based on the display settings.

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.