4. Click
![](../../../sheetmetal/sheetmetaldesign/images/smt_cut_norm_green.png)
to create the split area normal to the driving surface or click
![](../../../sheetmetal/sheetmetaldesign/images/smt_cut_norm_white.png)
to create the split area normal to the offset surface.
5. Accept the default projection direction or click
![](../../../sheetmetal/sheetmetaldesign/images/extrev_flip.png)
next to
![](../../../sheetmetal/sheetmetaldesign/images/smt_project_sketch.png)
to project the sketch to the other side or both sides of the reference plane.
6. Accept the default area selected for the sketch or click
![](../../../sheetmetal/sheetmetaldesign/images/extrev_flip.png)
next to
![](../../../sheetmetal/sheetmetaldesign/images/rip_sketch_area_side.png)
to toggle the location of the new surface ID to the area inside or to the area outside of the sketch.