Navigate to the Sheet Metal tab, click MODIFY, then click Sheet Metal Rules. 2. Hover over any existing rule to reveal the New Rule icon. Click the New Rule icon to start creating a new rule. 3. Name the rule. Update the material Thickness, K Factor, and Bend radius to match the Advanced Details on the Bending Calculator page. 4. When the rule settings are updated, click Save. The sheet metal rule will be added to your Library!