Reshaping Corners

Sometimes, when filleting, you can see that corners resulting from the operation are not satisfactory. This capability lets you quickly reshape these corners.

Open the BlendCorner1.CATPart document.

  1. Click Edge Fillet and fillet the edges as shown using 5mm as the radius value.

    This option is available through Variable Fillet too.
    Be careful when selecting edges as the order of selection affects the final shape of the fillet. This explains why you may sometimes encounter error messages when filleting.
    To obtain the shape we need for our scenario, please select the edges counter-clockwise.
    Taking a closer look at the corner, you can notice that the edges need to be rounded again. 

  2. After launching the Edge Fillet Definition dialog box to edit the fillet, click More>> to access additional options.

  3. Right-click the Blend corner(s) field and select Create by edges. In our example, only one corner is detected.
    The application shows it in the geometry area (3D text).

     
    When the application detects several corners, it is not possible to reshape just a few of them: all of them will be edited.
    The Setback distance field determines for each edge a free area measured from the vertex along the edge. In this area, the system adds material so as to improve the corner shape. The tangent edges will be automatically selected if they are in propagation with the selected edges. This allows you to specify the setback distance
    value exceeding the length of the corresponding concurrent edges.

  4. Enter a value in the Setback distance field. For example, 13.

  5. Click Preview to examine the result:

    To edit the distance for the top edge, click 13 and enter 22 as the new value in the Setback distance field.

  6. Repeat the operation for the edge below using the same distance value.

  7. Click OK to confirm the operation. The corner is reshaped.
 

More About Blend Corners
  When editing an edge fillet containing at least one blend corner, the following options are available in the Blend corner(s) contextual menu:
  • Reframe On:  This command reframes the model at the selected corner.
  • Create by edges:  The selected and propagated edges are taken into account. You do not need to select the concurrent edges of the corners. This command does not remove the existing blend corners.
  • Edit: This command displays a list of editable setback values. However, an error message is displayed if you edit multiple blend corners.
  • Remove: This command removes the selected blend corners.
  When no corner is created, only the Create by edges and Create by vertex commands are displayed in the contextual menu.