Creating fillets

In mechanical engineering, a fillet is a rounding of an interior or exterior corner of a part design. In Designer, you can quickly create fillets using the Trim tool on circles. This tutorial shows how to create a slot with filleted corners.

1. To make it easier to make the curves match perfectly, set the grid to the size of the radius you want on the curve.
2. Draw the rectangle for the slot.

   

3. In each corner, place a circle, using the grid to be precise.

   

4. Click the Edit tool and draw a selection box around the rectangle (which includes the circles).

   

5. Click the Trim tool.
6. Zoom in on each circle and erase the outer square line segments and the inner circle arcs to create the fillet.

   

   

   

   

7. The filleted corners are complete.

   

8. Press <Esc> or click the Edit tool to complete the trim.