The sheet metal tool in solidworks is located in the sheet metal toolbar and drop down menu.
Solidworks convert to sheet metal.
When cleared the body is consumed by the convert to sheet metal feature.
Select a face as the fixed face for the sheet metal part.
If an edge already has a fillet applied the radius of the fillet is used as the bend radius for the new sheet metal part.
In the convert to sheet metal propertymanager you specify the fixed face and thickness of the sheet metal part the default bend radius and the edges or fillet faces on which to create bends.
Here is your sheet metal box.
Solidworks convert to sheet metal cylinder.
Under sheet metal parameters.
This tutorial shows how to convert cylindrical hollow solid part to sheet metal cylinder.
The software automatically selects the edges on which rips are applied.
Sheet metal convert and flat pattern suppressed.
Notice the three features added.
2 solidworks will pick the rip edges for you by process of elimination.
This approach will work for any solid body you have including imported bodies made in other systems.
3 when all edges have been added to the two groups hit the green check.