The Machinable Area Mill Surface is an advanced technique that calculates whether the selected surfaces can be entirely machined with the selected cutting tool, and creates explicit surface representations of the millable area (the portion of the selected surfaces that can be milled), as well as of the remainder area (the portion that can not be milled with the selected tool).

This technique allows you to automate surface selection for subsequent machining with a smaller tool or with a different machining strategy.

You have to specify surfaces to be milled, additional surfaces for gouge checking (if any), the cutting radius of a ball end mill tool and the tool axis orientation. The system then calculates the machinable area based on tool contact and gouge avoidance.