Change default rules for sheet metal part

1. On the ribbon, click Sheet Metal tab Setup panel Sheet Metal Defaults .
2. From any of the drop-down selection fields, select and set a different: Sheet Metal Rule, Material, or Unfolding Rule to change the default used for the active part.
3. Optionally, check or uncheck the “Use Thickness from Rule” check box and enter a value to define a sheet thickness that differs for the thickness defined in the specified Sheet Metal Rule.
4. Optionally, to edit or create a sheet metal rule or unfolding rule, click Edit next to the appropriate field to open the Style and Standard Editor.
5. Optionally, click Apply to accept and apply all changes while leaving the dialog box open allowing subsequent edits.
6. Click OK to accept and apply all changes and close the dialog box.