About Face-Face Fillets as Local Modifiers

Face-Face Fillet is used when there is no intersection between the faces or when there are more than two sharp edges between the faces. This topic provides you with background information about creating face-face fillets.

This page discusses:

See Also
Creating Face-Face Fillets as Local Modifiers
Using the Display Only Parents Option to Retrieve a Creation Context

Conic Parameter

The Conic parameter option allows you to vary the section of the fillet. For a parameter comprised between or equal to:

  • 0.5, the resulting curve is a parabola.
  • 0 < parameter < 0.5, the resulting curve is an arc of an ellipse.
  • 0.5 < parameter < 1, the resulting curve is a hyperbola.
Notes:
  • Conical fillets do not handle twist configurations. If a twist is detected, the fillet operation fails.
  • Conical fillets may produce internal sharp edges due to a curvature discontinuity of the fillet supports. Healing is used to smooth these sharp edges.
  • If the fillet surface curvature is lower than the support curvature, fillet surface relimitation may fail. In such cases, the conic parameter has to be decreased.

Edges to Keep

You can specify the edges of support body to be kept and create fillet surfaces with Hold Curve and Keep Edge as supports wherever necessary. This helps in two different situations:

  • Initializing the fillet ribbon when no portion of ribbon track lies within the limits of the provided support face.
  • Computing the fillet surfaces with keep edges as supports, whenever the default fillet ribbon track crosses the edges to be kept.

The Edge(s) to keep box is not selectable by default. If a hold curve is selected, the Edge(s) to keep box becomes selectable. As soon as an edge to be kept is selected, it turns purple.

  • It is possible to perform Thickness, Shell, Boolean operations on the resulting fillet surface.

  • It is possible to specify limiting element.

  • Keep edges of Round Corner type is not supported.

  • The fillet ribbon has zero radius at the points where the Keep edge intersects the Hold Curve. There can be maximum two such points in a fillet ribbon i.e. one at each end of the fillet ribbon.

  • Fillet operation may fail in cases where keep edge intersects the support face of Hold Curve.

  • Keep edges cannot be border edges.

  • The keep edges should be sharp.

  • Fillet operation fails if twists are encountered.

Limiting Element

Limiting element lets you define a trimming element. Once you have selected that element, an arrow appears on it to indicate the portion of material that will be kept. If you wish to keep the opposite portion of material, click this arrow to reverse the direction. You can select the 2D output sketches, 2D output profiles, and 2D layout profiles as limiting element.

You can right-click Limiting element and select any contextual command to create a limiting element.

If you create any of elements using contextual, the app then displays the corresponding icon in front of the Limiting element box. Clicking this icon enables you to edit the element.

Hold Curve

Instead of entering a radius value, you can use a hold curve to compute the fillet. Depending on the curve's shape, the fillet's radius value is more or less variable.

The curve must be sketched on one of the selected faces.

The Generative Shape Design product license is required to access this capability.

You can right-click the Hold Curve box and select any contextual command to create curves.

If you create any elements using contextual commands, the app displays the corresponding icon in front of the Hold Curve box. Clicking this icon enables you to edit the element.

Spine

A spine provides better control of the fillet. The spine you select can be a wireframe element or a Sketcher element. To compute the fillet, the app uses circles contained in planes normal to the spine. It is then possible to control the shape of the fillet.

You can right-click the Spine box and select any contextual command.

If you create any elements using contextual commands, the app displays the corresponding icon in front of the Spine box. Clicking this icon enables you to edit the element.