Sheetmetal > Designing in Sheetmetal Design > Creating and Modifying Walls > Attached Walls > Flange Walls > About the Flip Profile Command
  
About the Flip Profile Command
You can use the Flip Profile command when creating or redefining a flange wall to flip the wall orientation along the attachment edge. To make the command available on the Shape tab and shortcut menu, set the smt_allow_flip_sketch configuration option to yes.
 
* When you flip the angle of a 2D section, the section is moved to an offset edge to retain the symmetry around the attachment wall. When you flip the angle of a 3D section, the section is mirrored about a plane located at half the thickness of the section.