How to Trim Lines in AutoCAD 2020?

Understanding the Trim Tool in AutoCAD 2020

Introduction to Trimming in AutoCAD

Trimming is an essential operation in AutoCAD that allows users to cut objects at defined edges, creating precise and clean designs. This feature can significantly enhance workflow efficiency when modifying drawings.

Step-by-Step Guide to Trimming Lines

1. Navigate to the Trim Tool

   • Access the Home tab in the ribbon interface.
   • Locate the Modify panel and click on the Trim tool icon. This will activate the Trim command.

2. Select Cutting Edges

   • Once the command is activated, the prompt will ask for cutting edges. Click to select the lines or shapes that will act as the boundary for the trimming action.
   • After making your selections, hit Enter to confirm the cutting edges.
3. Choose Objects to Trim
   • Next, select the objects you wish to trim. Click each object that you want to cut at the defined edges.
   • Once you are satisfied with your selections, press Enter again to finalize the trimming operation.

Troubleshooting Trim Issues in AutoCAD 2020

If the Trim tool does not function as intended, follow these troubleshooting steps:

• Verify the PICKADD Variable

  • Enter PICKADD into the command line and check its setting. This variable should be set to 2 to enable multiple selections.

• Utilize Pre-Selection

  • Instead of selecting edges after activating the Trim tool, pre-select your objects before calling the Trim command. This often leads to better results.
• Command Line Usage
  • If you encounter issues, type TRIM in the command line and press Enter. After that, simply press Enter again to reengage the command.

Additional Trimming Techniques

Cropping a Drawing

1. Unlock the AutoCAD Drawing

   • Right-click on the drawing image and choose Properties. Ensure the drawing is unlocked before proceeding.

2. Access the Crop Tool

   • Right-click on the drawing and select the Crop Tool option from the menu.

3. Adjust the Crop Area

   • Use the selection handles to shape the cropping area to your desired specifications.
4. Finalize the Crop
   • Once satisfied with the adjustments, click on the Pointer tool to exit the cropping mode.

Understanding the Differences: Trim vs. Erase

• Trim: This operation removes the parts of objects that lie beyond specified edges without deleting the entire object.
• Erase: This command will remove selected objects completely from the drawing, without the restriction of cutting edges.

FAQs

1. Can I use trim to cut curved lines in AutoCAD?

   • Yes, the Trim tool in AutoCAD can effectively handle both straight and curved lines, allowing for versatile design adjustments.

2. What should I do if my trimming command is not responding?

   • Ensure you have selected the correct cutting edges, verify the settings of the PICKADD variable, and make sure your objects are not locked.
3. Is there a shortcut for the Trim command in AutoCAD?
   • Yes, you can press TR followed by the Enter key to quickly initiate the Trim command.