You can change the type of auto reliefs automatically added to the bend regions in sheet metal parts.
You cannot edit
relief cuts in sheet metal parts created in versions prior to SolidWorks
99.
To change the type of relief cut for all bends:
Right-click the Sheet-Metal feature in the FeatureManager design tree and select Edit Feature.
In the PropertyManager, under Auto Relief, change the type of relief cut.
If you select Rectangular or Obround, specify the Relief Ratio.
Click OK
.