You can define the raw stock model as a uniformly offset part model by selecting the Part Offset option from Create Stock Model under the Program tab in Machining Browser.
 Machining Browser: Part Offset Stock menu item |
When you click on the OK button, a stock model based on the Radial Offset (r) is created. You can switch to the Simulate tab of the browser window to display the stock model that was created.  Dialog Box: Part Offset Stock |
 Part Offset Stock Example |