About Miter Cuts
You can add a miter cut at the intersection of two tangent flat or swept flange wall segments. Specify the value of both the width of the miter cut and the offset distance between the end of the miter cut and the placement chain. You can define miter cut settings when creating a flat or flange wall, or you can predefine them in the Miter Cuts area of the Sheetmetal Preferences dialog box or using sheet metal parameters. Keep in mind the following when creating miter cuts:
Half the specified width value is used to cut the material from each side of the miter cut centerline.
The value specified for Offset defines the distance between the end of the miter cut and the placement chain. If the intersecting wall segments are tangent, you cannot define an offset.
When the deformation area of the miter cut is retained, a rip is automatically added to the deformed area. This rip connects the miter cut to the point that represents the deformation area and enables the geometry to regenerate.
Use the Corner Treatment tab to define the intersection of two nontangent wall segments.