How to Change Length in AutoCAD?

Changing Length in AutoCAD: A Comprehensive Guide

Understanding how to change lengths in AutoCAD is essential for precise drafting and design. Whether you’re modifying lines, rectangles, or dimensions, this guide will provide step-by-step instructions on effectively altering lengths in AutoCAD.

Adjusting Line Length

1. Activate the Lengthen Command
   Start by entering the command: LENGTHEN. Press Enter to initiate the command.

2. Select the Delta Option
   After triggering the command, select the Delta option. This allows you to specify the exact change in length.

3. Input a Negative Value
   To reduce the line length, enter a negative value. For example, to shorten a line by 10 units, type -10 and press Enter.

4. Choose the Line
   Click on the line you wish to shorten. The line will adjust according to the value you entered.

Modifying Rectangle Dimensions

1. Select the Rectangle
   Click on the rectangle that you need to adjust. If it is a closed object, ensure it is selected properly.

2. Access Properties
   Type PROPERTIES into the command line and hit Enter. This opens the Properties palette, where you can make adjustments.

3. Locate Dimensions
   In the Properties palette, navigate to the section labeled Dimensions. Here, you will find options for changing the rectangle’s width and height.

4. Set New Dimensions
   Input your desired width and height values. Press Enter to apply the changes.

Changing Dimensions

1. Open Dimension Style Manager
   Invoke the Dimension Style Manager by typing DIMSTY into the command line. Press Enter.

2. Select the Desired Style
   From the list of dimension styles, click to highlight the one you want to modify.

3. Modify the Selected Style
   Click on the Modify button to access editing options for the selected dimension style.

4. Adjust Scaling
   Under the Fit tab in the Modify Dimension Style dialog, you will find options for scaling and positioning. Adjust as needed.

5. Confirm Changes
   Click OK to apply modifications and then Close the Dimension Style Manager to exit.

Stretches and Transformations

1. Initiate the Stretch Command
   On the Home tab, locate the Modify panel and select the Stretch command.

2. Select Object for Stretching
   Use a crossing window selection to highlight the portion of the shape you wish to stretch.

3. Specify Displacement
   Input the required displacement value using a coordinate format, such as relative Cartesian coordinates. Confirm with Enter.

4. Adjust as Needed
   The shape will stretch based on the specified parameters.

FAQs

1. Can I change the unit measurements in AutoCAD?
Yes, you can change unit measurements. Use the UNITS command and select your desired unit system—such as millimeters or inches—in the dialog box.

2. How do I verify the length of an object in AutoCAD?
You can check an object’s length by selecting it and opening the Properties palette (accessible with Ctrl + 1). Alternatively, use the LIST command to see detailed information, including length.

3. Are there shortcuts for modifying lengths quickly?
Utilizing commands such as LENGTHEN, STRETCH, and the Properties palette provides efficient ways to modify lengths. Additionally, setting keyboard shortcuts for common commands can speed up your workflow.