Unfold sheet metal rolls relative to a temporary plane displayed at either end of the rolled material.
Use this procedure on a folded sheet metal model that contains no flat face.
- On the ribbon, click Sheet Metal tab
Modify panel Unfold 
. - Click one of the temporary planes displayed at either end to use as the unfold reference.
- Click individual highlighted rolls to unfold. To select all the geometry highlighted, click Add All Bends, and then use CTRL+click to remove bends or rolls from the selection.
- Preview the flattened state, and add or delete rolls as necessary.
- You can select unconsumed sketches to unfold.
- Click OK.
An Unfold feature is added to your sheet metal part browser.