To assign Gage Thickness to the Sheet Metal design, you need an xml file which has the required information such as material properties, and gage numbers with their corresponding thickness values. The xml file needs to be placed in the Materials folder of the installation directory. A sample xml file called ‘SheetMetal from MatWeb.xml’ is located at: C:Program FilesSpaceClaimLibraryMaterials (default location) The properly placed xml file enables the user to select that particular material by clicking the ‘Design’ in the Structure Tree and selecting it from the Library of materials in the Properties Panel. Assigning customized material and having the ‘Sheet Metal’ property set to ‘True’ from the properties panel enables the user to select the Gage Thickness.