AutoCAD

How to Show Break Dimension in AutoCAD?

Understanding Break Dimensions in AutoCAD

Break dimensions in AutoCAD are essential for creating clear and effective drawings, particularly when dealing with complex shapes that must be simplified visually. The following guide offers a comprehensive approach to showing break dimensions in AutoCAD.

Step-by-Step Guide to Show Break Dimensions

  1. Access the Annotation Tab
    Begin by opening your AutoCAD project and navigating to the Annotate tab located in the main menu.

  2. Select the Break Tool
    Within the Dimension panel, find the Break option. Click on the drop-down arrow next to the Dimension panel to reveal additional tools, then select Break.

  3. Choose the Line to Break
    Click on the dimension line or extension line that requires a break. This indicates which element you want to modify.

  4. Finalize the Selection
    After selecting the appropriate line, press the ENTER key. This action will create the break in the dimension line according to your selection.

Displaying Breaks at Dimension Text

To ensure that breaks appear appropriately at the dimension text:

  • Utilize the Background Mask option to cover adjoining areas. This is particularly useful if the object intersects with your dimension at critical points, such as the arrowhead or dimension text. The break will appear correctly once the intersections are adjusted or relocated.

Turning On Dimension Display

If dimension displays aren’t visible:

  1. Open the Dimension Style Manager
    Type DIMSTY in the command line and press ENTER to access the Dimension Style Manager.

  2. Modify Existing Styles
    Select the current dimension style you are using. Click the Modify button to adjust settings.

  3. Set Primary Units
    Navigate to the Primary Units tab and configure the unit format as Decimal. Set the precision as required, and add the inch symbol (“) in the Suffix box if necessary.

  4. Apply Changes
    After making these adjustments, click OK to apply the changes.

Adding Break Symbols

For those looking to place break symbols within a dimension line:

  • Use the command BREAKLINE or navigate through Express > Draw > Break-Line Symbol. You will be prompted to specify two points for the break lines, and a third point for the jogged line, allowing for customized placement.

Fixing Dimension Issues

If dimensions appear incorrect or non-functional:

  1. Access the Dimension Style Tools
    Click on the Home tab, then locate the Annotation panel and select Dimension Style.

  2. Modify the Style
    Within the Dimension Style Manager, highlight the style you wish to alter and click Modify.

  3. Adjust Scale Settings
    In the dialog box, switch to the Fit tab. Here, you can change the Scale for Dimension Features to ensure dimensions are represented accurately.

  4. Confirm and Exit
    After modifications, click OK and then Close the Dimension Style Manager to finalize your adjustments.

Common Reasons for Missing Dimensions

If dimensions still do not display:

  • Check the layer controls to ensure that the dimension layers are turned on.
  • For text visibility issues, it might be that the text style is too small relative to the current scale of the drawing.
  • Switching to paper space may also restore visibility for dimensions that are otherwise hidden in model space.

FAQ

1. What are the different types of dimensions I can create in AutoCAD?
The most common dimension types include linear, radial, angular, ordinate, and arc length dimensions. Each type is tailored to specific object characteristics within your drawing.

2. How can I offset my dimensions in AutoCAD?
To offset dimensions, double-click on the desired dimension and navigate to the Power Dimensioning tab. Here you’ll find the option to adjust the text offset from the dimension line, allowing for better spatial management of your drawings.

3. Why is my dimension text not visible?
Dimension text may not be visible due to scaling issues or layer settings. Check that your text style is appropriately sized for the current scale, and ensure that the dimension layer is not turned off in the layer management 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.