There are a few ways to create sheet metal components in Autodesk Fusion 360. You can create a new sheet metal component using the sheet metal rule. The rule uses your settings for material thickness, bend radius, and corner relief. You can also create a sheet metal component from scratch. You use sketch commands to create a profile for a base face or an initial contour flange. Then you exit the sketch and create your sheet metal face and flanges. Default rule is used but you can change or edit used rule.