AutoCAD

How to Subtract Hatch in AutoCAD?

Subtracting Hatch in AutoCAD

Hatching is a useful feature in AutoCAD for filling areas with patterns or designs. However, there may be times when you need to remove certain portions of a hatch to achieve the desired design. This guide will walk you through the steps to subtract hatch in AutoCAD effectively.

Accessing the Hatch Editor

  1. Select the Hatch: Double-click on the hatch area you want to modify, being careful to avoid clicking on the boundary line.

  2. Open the Hatch Editor: The Hatch Editor interface will appear, allowing you to make adjustments to the hatch pattern.

Picking Points for Deletion

  1. Enable Pick Points: Within the Hatch Editor, locate and click on the “Pick Points” option.

  2. Specify Deletion Type: Type "S" for “Select” in the command line and press Enter. Your cursor will change, indicating that you can now choose areas of the hatch.

  3. Select Areas to Remove: Click on each of the internal regions of the hatch that you wish to erase. Be precise to ensure only the intended parts are selected for deletion.

  4. Confirm the Changes: After selecting the areas, review your choices, and hit Enter to apply the changes.

  5. Finalize Edits: Once satisfied with the modifications, close the Hatch Editor to save your adjustments.

Counting Hatches in AutoCAD

To efficiently work with hatches, sometimes you might need to know how many hatches are present in your drawing:

  1. Navigate to the “Quick Select” Feature: Right-click anywhere on your drawing and select “Quick Select” from the context menu.

  2. Set Selection Criteria: In the Quick Select window, set the “Apply to” option to “Entire Drawing.” Then, choose “Object Type” and set it to “Hatch.”

  3. Execute the Command: Click “OK,” and all hatches should now be highlighted. You can manually count them or check the properties panel for more details.

Editing Hatch Properties

Editing hatches allows for customization to ensure they fit within your drawing needs:

  1. Select the Hatch: Click on the hatch that you want to edit.

  2. Access the Hatch Editor: The contextual tab on the Ribbon will display the current settings and options for the selected hatch.

  3. Make Your Modifications: Adjust parameters as needed (e.g., fill patterns, scaling, etc.). Watch for real-time previews to assess changes as you make them.

  4. Save Changes: Once adjustments are complete, click “Close Hatch Editor” to confirm and apply the modifications to your drawing.

Fixing Issues with Hatches

Sometimes hatches may not appear as expected due to various settings or issues. Here’s how to troubleshoot:

  1. Check Layer Status: Ensure that the layer containing the hatch is active and not frozen.

  2. Display Options: Navigate to the Options menu and check under the Display tab to confirm that the “apply solid fill” option is enabled.

  3. Confirm Changes: Click on “Apply” and then “OK” to finalize any adjustments to display settings.

FAQ

1. How can I quickly erase multiple objects at once in AutoCAD?
Use the "Erase" command found in the Home tab under the Modify panel. You can select multiple objects by dragging a selection window around them or by holding the Shift key while clicking to select individual items.

2. What is the difference between "Trim" and "Erase" in AutoCAD?
"Trim" allows you to shorten or cut back objects to a defined boundary without completely removing them, while "Erase" permanently deletes objects from your drawing.

3. How do I create custom hatch patterns in AutoCAD 2025?
Access the Options menu, navigate to the Hatching section, and use the create functionality to define a new hatch pattern. Follow the prompts to customize the pattern as needed.

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.