Add fillets to sketch geometry
Learn how to use the Fillet command to round the corners of sketch geometry in an active sketch in Fusion.
Note: Before you can modify sketch geometry, you must use the Create Sketch command 
to create a new sketch or right-click an existing sketch and select Edit Sketch to enter the Sketch contextual environment.
to create a new sketch or right-click an existing sketch and select Edit Sketch to enter the Sketch contextual environment.On the Sketch contextual tab, select Modify > Fillet
.Pause the cursor over the first object, then click to select it.
Pause the cursor over the second object.
A preview of the fillet displays in the canvas.
Click to select the second object.
Drag the radius manipulator handle in the canvas or specify a radius value.
To end the command, press
Enter.
The fillet geometry and radius dimension display in the canvas.
Note: Valid selections highlight when you pause the cursor over them. The initial fillet preview displays a radius value that is proportional to the smaller of the selected objects.