AutoCAD

How to Draw Break Line in AutoCAD?

Steps to Draw a Break Line in AutoCAD

1. Initialize Your Drawing

Begin by launching AutoCAD and creating a new drawing file. This offers a clean slate to work on.

2. Access the Correct Layer

Ensure that you are working on the appropriate layer. It is recommended to activate the Defpoints layer, which is specifically designed to handle break lines. This allows for better visibility and management of your drawing elements.

3. Draw the Break Line Symbol

The break line symbol is crucial for representing breaks in your design. Here’s how to do it:

  • Select the Polyline tool from the draw menu to create a series of connected lines or curves that represent your break line. Aim for a wavy or dashed appearance.
  • Alternatively, you can use a combination of the Line and Arc commands to create your desired break line format.

4. Place Points for Connection

To indicate where the break line connects to the main line:

  • Use the POINT command to place points along the main line at positions where the break line will connect.
  • Click at the locations where the ends of your break line will join the continuous line. This ensures a precise connection and enhances the clarity of your drawing.

5. Create the Break Line

With the break line symbol and connection points ready, now create the break line:

  • Select the Break Line tool from the Annotate tab, or create a custom polyline using the points you placed.
  • Confirm the placement to ensure it visually aligns with your drawing standards.

6. Adjust and Refine

Once you have the break line in place, refine its appearance. You may need to:

  • Modify the lineweight or color to distinguish it from other elements in your drawing.
  • Adjust the curvature or shape of the break line to achieve the desired visual impact.

Adding Breaks to Dimensions

If your design requires breaking dimensions:

  1. Navigate to the Annotate tab, and select the Dimension panel.
  2. Choose the dimension or multileader that you wish to modify for the break.
  3. Enter ‘m’ for manual input and press Enter.
  4. Indicate the starting and ending points of the dimension break as specified.

Types of Break Lines

Understanding various break line types will help you choose the most suitable one for your project:

  • Short Break Lines: Typically drawn freehand with a wavy pattern to indicate a section that has been omitted. This type is often used in mechanical drafting.
  • Long Break Lines: These may be represented with a straight line and various design elements to imply a larger omission.

Frequently Asked Questions

1. What is the purpose of a break line in AutoCAD?

A break line is used to indicate that a part of an object or dimension has been omitted for clarity or space reasons. It helps simplify complex drawings by preventing clutter.

2. How can I change the appearance of a break line in AutoCAD?

You can modify the properties of a break line by adjusting its color, lineweight, and style through the properties palette or layer settings.

3. Is there a shortcut to create a break line quickly?

While there isn’t a direct shortcut, using the BREAKLINE command can streamline the process. You can also customize shortcuts in AutoCAD to enhance efficiency in your workflow.

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.