To Copy or Delete a Design Rule Table
Use the General page of the Sheetmetal Preferences dialog box to set design rules of a sheet metal body.
1. Click > > 
Model Properties. The Model Properties dialog box opens.
Model Properties. The Model Properties dialog box opens.2. Under Sheetmetal, click change in the Design Rules line. The Sheetmetal Preferences dialog box opens to the General tab.
 | Alternatively, you can select a body in the Model Tree, right-click and select  Preferences. The Sheetmetal Preferences dialog box opens to the General page. |
3. Next to Design rules, click Part Design Rules. The Design Rules dialog box opens.
4. To copy a design rule table to the part, browse to a directory and select the design rule table. right-click and choose Copy.
5. To delete a design rule table from a part, select the rule from the list of design rules at the bottom of the dialog box, right-click and choose Delete. The design rule table is deleted from the part, but still exists in the directory.
6. Click OK.