3 when all edges have been added to the two groups hit the green check.
Convert to sheet metal solidworks.
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.
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Set the sheet thickness and default bend radius.
However in some circumstances when the design requires certain types of geometry you can use non sheet metal feature tools then insert bends or convert the part to sheet metal.
Under sheet metal parameters.
Select a face as the fixed face for the sheet metal part.
When cleared the body is consumed by the convert to sheet metal feature.
Sheet metal convert and flat pattern suppressed.
2 solidworks will pick the rip edges for you by process of elimination.
The software automatically selects the edges on which rips are applied.
There are specific sheet metal features you can use to create sheet metal bodies quickly.
Select keep body if you want to keep the solid body to use in another 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.
Notice the three features added.
Here is your sheet metal box.