Create a fillet

Learn how to use the Fillet tool to round the edges of a solid body in Fusion by removing material from exterior edges or adding material to interior edges.

Use the Fillet type to create fillets

1. Click Design > Solid > Modify > Fillet .

   The Fillet dialog displays.

2. In the dialog, from the Type dropdown list, select Fillet.

3. In the canvas, select edges, faces, or features to fillet.

   The selection set displays as a row in the selection box.

4. Adjust the settings associated with the selection set:

   • Select a Radius Type to define the fillet size:
     • Constant : Applies a single radius value along an entire fillet.
     • Chord Length : Applies a chord length value along an entire fillet to determine its size. Chord length is the distance between the two edges where the fillet ends and the adjacent faces begin.
     • Variable Variable : Applies multiple fillet radius values at points that you specify along a single edge. (Single edges only)
       • In the Radius Points section, adjust Radius and Position values for Start and End points.
       • Add or remove additional points.
   • Radius or Chord Length: Drag the radius manipulator handles in the canvas, or specify exact values to determine the size of the fillet.
   • Continuity: Applies G1 or G2 continuity to fillet transitions.
     • Tangent (G1)
     • Curvature (G2)
   • Tangency Weight: Increase or decrease scale.
   • Corner Type: Rounds edges at the corner or blends rounded corners into adjacent faces.
     • Rolling Ball
     • Setback

5. Optional: Click + to add a selection set to the list. Repeat steps 3-4 to create fillets with different settings than the first selection set.

6. Click OK.

The fillets display on the solid body in the canvas.

Use the Rule Fillet type to create fillets

1. Click Design > Solid > Modify > Fillet .

   The Fillet dialog displays.

2. In the dialog, from the Type dropdown list, select Rule Fillet .

3. Select a Rule to create fillets on all edges in a single selection set, or only at shared edges of two selection sets:

   • All Edges
   • Between Faces/Features

4. In the canvas, select faces or features to fillet.

   In the dialog, the number of selected faces or features displays in the selection box next to each selection set.

5. Drag the radius manipulator handle in the canvas to adjust the Radius, or specify an exact value.

6. Select a Round/Fillets setting to apply rounds to outside corners, fillets to inside corners, or both:

   • Rounds and Fillets
   • Rounds Only
   • Fillets Only

7. Select a Corner Type to round edges at the corner or blend rounded corners into adjacent faces:

   • Rolling Ball
   • Setback

8. Click OK.

The fillets display on the solid body in the canvas.

Use the Full Round Fillet type to create fillets

1. Click Design > Solid > Modify > Fillet .

   The Fillet dialog displays.

2. In the dialog, from the Type dropdown list, select Full Round Fillet .

3. In the canvas, select Center Faces for the full round fillet.

   The selection set displays as a row in the selection box.

   The full round fillet tool preview displays on the body in the canvas, if it can be created.

4. Optional: If the tool preview does not display, select faces on Side 1 and Side 2 until the tool preview displays.

5. Optional: Click the + icon to add a selection set to the list. Repeat steps 3-4 to create additional full round fillets on the same solid body.

6. Click OK.

The fillets display on the solid body in the canvas.

Tips

• Hold Ctrl (Windows) or Command (MacOS) to modify the selection set once the fillet tool preview displays on the body in the canvas.

• For the Full Round Fillet type, hover over the center face and the side faces that will be used to create the fillet highlight in the canvas. Move the mouse pointer over different areas of the center face to control which side faces are selected.

• Use Tangent Chain to dynamically control selection sets.

  • If you start with a body and a single Fillet operation like this:

  

  • With Tangent Chain off, you select a single edge at a time, with the following Fillet result:

  

  • With Tangent Chain on, you select tangentially connected edges, with the following Fillet result:

  

  • If you roll back the Timeline and add additional edges to the earlier Fillet operation:

  

  • When you replay the later Fillet operation, the selection set updates to include new tangentially connected edges, with the following Fillet result:

  

• Uncheck Tangent Chain to exclude tangentially connected edges when you select edges.