Understanding the Stretch Command in AutoCAD
The Stretch command in AutoCAD is a powerful tool used to modify the length and shape of objects, particularly beneficial when working with polylines. This command allows users to stretch parts of an object that are partially enclosed by a selection box or polygon, which makes it easier to adjust designs without having to redraw or recreate geometry.
Steps to Stretch a Polyline in AutoCAD
1. Prepare Your Workspace
Before using the Stretch command, ensure that your AutoCAD workspace is organized. Open the drawing that contains the polyline you wish to stretch. Familiarize yourself with the tools located in the Home tab, specifically the Modify panel.
2. Selecting the Stretch Command
Navigate to the Home tab in the ribbon interface. Locate the Modify panel. Here, click on the “Stretch” button or type “STRETCH” into the command line and press Enter. This action will activate the Stretch command.
3. Selecting the Object
Next, select the polyline you wish to stretch. To do this efficiently, you can use a crossing window method. Click on one corner of your selection box and drag to the opposite corner so that at least one endpoint or vertex of the polyline is included within the selection. Be cautious to ensure only the parts you want to stretch are included.
4. Confirm Your Selection
After you have selected the polyline, press Enter to confirm your selection. Ensure you have confirmed the crossing selection correctly; otherwise, you may inadvertently stretch parts of the line you did not intend to change.
5. Enter the Displacement
With your polyline selected, you will need to specify how much you want to stretch it. Input the displacement value, which can be given in various formats including relative Cartesian (e.g., “5,0” to stretch horizontally) or polar coordinates (e.g., “10<45" for a diagonal stretch). After entering the desired value, press Enter to finalize the movement.
Adjusting the Width of a Polyline
Sometimes, after stretching a polyline, it is necessary to adjust its width to maintain the desired visual style or performance in your drawing. To change the width:
1. Type “PE” on the command line and hit Enter.
2. Select the polyline you wish to modify.
3. Choose the width option from the command line and enter your desired width.
By following these steps, you can ensure the polyline maintains the appropriate dimensions throughout the editing process.
Frequently Asked Questions
1. Can I stretch multiple polylines at once using AutoCAD?
Yes, you can stretch multiple polylines by using a crossing selection window that encompasses all the desired polylines before executing the Stretch command. This allows you to modify several objects simultaneously.
2. What happens if I accidentally select the wrong part of a polyline while stretching?
If you select the wrong part of a polyline while stretching, simply press Cancel or Escape to exit the command, then start the Stretch command anew to make the correct selection.
3. Is it possible to stretch a polyline using the grips instead of the Stretch command?
Yes, you can use grips to stretch a polyline. Select the polyline, click on a grip, and then drag it to the desired location. This method allows for more granular control over minor adjustments.
