Specify Z level rough as the Strategy on the New Strategy page.
If your shape is a 3D boss, choose the Boss option. If your shape is a cavity, click on the Pocket button.
At the conclusion of the wizard, click the Finish and edit properties button. If this button is not displayed, hold down the triangle on the right side of the Finish button and select Finish and edit properties from the menu.
Click on the Milling tab.
Select the Z-level roughing method.
Click on the Leads tab and set the options for the moves between toolpaths.
Click OK.
Generate toolpaths. If you receive an error, see Troubleshooting Z level roughing for more information.
Note: The toolpaths for Z level rough always use both linear and circular interpolation where appropriate. While Arc/line approximation is an option for other types of 3D toolpaths, it is always used for Z level rough.