Do you know, that… ?

In the production of road signs or e.g.. furniture, you can use sheet metal to define rounded areas at the corners. This is helpful in preparing the frames.

View, how it's working.

The border must be drawn with a sheet of metal. Then unfold the tray. As you know, in the unfolded state the bending lines and the bounding box will be displayed.

Now you must edit operations Flat-Pattern i deselect options Merge walls. This option is enabled by default.

This way, the bent areas will be separated by edges.