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.
Solidworks convert to sheet metal.
Under sheet metal parameters.
Select keep body if you want to keep the solid body to use in another convert to sheet metal feature.
Notice the three features added.
3 when all edges have been added to the two groups hit the green check.
When cleared the body is consumed by the convert to sheet metal feature.
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.
Using this tool is an all in one approach to transforming a solid body into sheet metal.
Set the sheet thickness and default bend radius.
Sheet metal convert and flat pattern suppressed.
Here is your sheet metal box.
The software automatically selects the edges on which rips are applied.
This approach will work for any solid body you have including imported bodies made in other systems.
The sheet metal tool in solidworks is located in the sheet metal toolbar and drop down menu.
Select a face as the fixed face for the sheet metal part.