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Lugs in sheet metal

Flange elements consist of a face and a bend that connects to an existing face along a straight edge.

To add a tab element, select one or more edges and specify the size and location of the material you added.

Corners that are created during the creation of flange and contour flange elements have the default relief shape when the model is flattened. You can override the default sheet metal definition settings using the Flat Pattern Options or the Bend or Corner tab. When you select edges for a polygonal flange, edit marks appear along the bends and at locations where the flanges you create share corners. In certain cases, when creating multi-edged plates, the Use automatic miter option can be used to trim interfering material along the ends of the plate.

Not all corners allow editing via characters. In the following illustration, tabs have no edit marks on their top edges, and the outside radius of the flange you added is opposite the outside radius of the bend between the two selected edges.
Conversely, if you create the flange in the opposite direction, as shown in the following illustration, the three bends will meet and the outside radii of their flange will be on the same side as the outside radius of the bend between the selected edges. In this case, an edit mark is displayed during creation or subsequent editing.

Tabs and multiple edges

Flanges with a common corner are automatically shown with a full or partial miter.

Flange mitres are created when the selected edges are coplanar and not parallel.
  • If the tabs are close enough together (depending on the miter spacing), a full corner is created.
  • If the tabs intersect, a partial miter is created.
  • When the edges meet at a common bend so that all three bends are inward, a bend with three corners is created.
If neighboring flanges are not shown with mitered corners, check that the Use automatic miter option is selected on the Corner tab of the Flange dialog box.
Automatic miter is also applied to non-coplanar flanges.