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Miter Flange

A miter flange feature adds a series of flanges to one or more edges of a sheet metal part.

Miter Flange Characteristics

  • The sketch for a miter flange must adhere to the following requirements:

    • The sketch can contain lines or arcs.

If you use an arc to create a miter flange, the arc cannot be tangent to the thickness edge. The arc can be tangent to the long edges, or by putting a small sketch line between the arc and the thickness edge. Click here for an example of creating a sketch for a miter flange with arcs.

    • The Miter Flange profile can contain more than one continuous line. For example, it can be an L-shaped profile.

    • The sketch plane must be normal to the first edge where the Miter Flange is created. Click here for instructions to create a sketch for a miter flange.

  • The thickness is automatically linked to the thickness of the sheet metal part.

  • You can create a miter flange feature on a series of tangent or non-tangent edges. Click here for an illustration of each.

  • Instead of creating a miter flange across the entire edge of a sheet metal part, you can specify an offset of the flange.

To create a miter flange feature:

  1. Create a sketch that meets the requirements above. Alternatively, you can select the Miter Flange feature before you create a sketch (but after you select a plane). When you select the Miter Flange feature, a sketch opens on the plane.

  2. With the sketch selected, click Miter Flange (Sheet Metal toolbar) or click Insert, Sheet Metal, Miter Flange.


In the Miter Flange PropertyManager the sketched edges are displayed for Along Edges , along with a preview of the Miter Flange in the graphics area.

To select all of the edges tangent to the selected edge, click Propagate that appears at the midpoint of the selected edge.

  1. Under Miter Parameters:

    • To use something other than the default bend radius, clear Use default radius and set a value for Bend Radius .

    • Set the Flange position to Material Inside , Material Outside , or Bend Outside . See Bend Positions for a description of each of these selections.

    • Select Trim side bends to remove extra material in neighboring bends.

    • Set Gap distance to use something other than the default gap.

  2. If necessary, specify the offset distances for a partial miter flange:

  • Under Start/End Offset set a value for Start Offset Distance and End Offset Distance . (If you want the miter flange to span the entire edge of the model, set these values to zero.)

  • Select Custom Relief Type, and select a Relief type of: Rectangular, Tear, or Obround. If you selected Rectangular or Obround:

      • Select Use relief ratio and set a value for Ratio.

        - or -

      • Clear Use relief ratio and set a value for Relief Width and Relief Depth .

  • To use something other than the default bend allowance, select Custom Bend Allowance, and set a bend allowance type and value.


  1. Click OK .

    The miter flange is added to the sheet metal part.


Example 1 of Miter Flanges at 45° Angles

Create a sheet metal part.

Select the edge near the endpoint at the start of the series of edges.



Create a sketch for the miter flange. The sketch plane is normal to the first edge where the miter flange will be created.

Select edges for the miter flange in a continuous order. In this example, the left vertical edge, then the horizontal edge, then the right vertical edge were selected.

Alternatively, you can click Propagate to select all of the edges tangent to the selected edge.

The miter flange is complete.

Example 2 of Miter Flanges at 45° Angles

Create a sketch for the miter flange.

Select edges for the miter flange in a continuous order.

The miter flange is complete.

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