- Click Tools 
 Job Preferences 
 Materials.  
- Click Modification. 
 
- Select the tab corresponding to the type of material that you want to add. 
 
- Enter a new name in the Name box.  If you enter a name which already exists in the material database, then the user-defined parameters will be used instead of the default material parameters. 
 
- Enter a Description for the new material. 
 
- Specify the Elasticity, Resistance and other parameters for the selected material. 
 
- Click Add.