How to Extrude Cut on Fusion 360?

Understanding Extrude Cut in Fusion 360

Extrude cut is a fundamental feature in Fusion 360 that allows users to remove material from 3D models using 2D sketches. This functionality is essential for creating complex geometries and enhancing design functionality. Below is a detailed guide on how to effectively use extrude cut within Fusion 360.

Step 1: Create a 2D Sketch

The first step in performing an extrude cut is to create a 2D sketch on the surface of the body you wish to modify.

1. Open Fusion 360: Launch the application and open your project.
2. Select a Plane: Choose a reference plane (XY, YZ, or XZ) where you’d like to draw your sketch.
3. Activate the Sketch Tool: Click on the “Create Sketch” button.
4. Draw the Shape: Use the sketch tools like lines, arcs, and circles to draw the profile that represents the cut you want to make. Ensure that this sketch fully encompasses the area where you want to remove material.

Step 2: Finish the Sketch

Once your sketch is complete, you will need to finish it before moving on to the next step.

1. Check Dimensions: Inspect your sketch to ensure that all elements are accurately dimensioned and positioned.
2. Finish Sketch: Click the “Finish Sketch” button to exit the sketching mode.

Step 3: Select the Extrude Tool

With your sketch ready, you can now use the extrude tool to turn it into an extrude cut operation.

1. Access the Create Menu: Navigate to the “Create” dropdown menu located in the toolbar.
2. Select Extrude: Click on “Extrude” or use the keyboard shortcut, usually "E".

Step 4: Define the Extrude Cut Parameters

After selecting the extrude tool, it’s essential to specify how you want the material to be cut:

1. Select the Profile: Click on the sketch you created to select the region for cutting.
2. Set the Direction: In the properties menu on the left, choose the "Direction" option. For a cut, select “Cut” from the dropdown.
3. Specify Extent: You can define how deep the cut should go. Choose "Distance" or "To Object" depending on your requirements. If you choose distance, set the value to how far you want to cut through the material.
4. Preview the Cut: Fusion 360 provides a preview of the cut. Ensure that it appears as intended before finalizing the operation.

Step 5: Complete the Extrude Cut

Before you apply the changes, check all settings one last time:

1. Confirm Settings: Double-check that the selected profile and parameters are correct.
2. Click OK: Once satisfied, click the "OK" button to execute the extrude cut.

Step 6: Review the Result

After applying the cut, it’s important to inspect the modified model:

1. Rotate the Model: Use the navigation tools to view your model from different angles.
2. Check Cut Depth and Shape: Ensure that the extrude cut has been applied correctly according to your design.

FAQs

1. Can I use multiple sketches for a single extrude cut operation?
Yes, you can select multiple closed profiles to extrude cut simultaneously. Simply hold the Ctrl key while selecting multiple sketches in the proper sequence.

2. How do I modify an existing extrude cut?
Locate the extrude cut feature in the timeline at the bottom of the Fusion 360 window. Right-click on it and select "Edit Feature." This allows you to adjust the parameters, such as depth or shape.

3. Is there a way to undo an extrude cut?
Yes, you can easily undo an extrude cut by selecting the feature in the timeline and right-clicking to choose "Delete," or you can use the undo function (Ctrl + Z) immediately after making the cut.