The Swarf finishing strategy provides a quality that is near perfect. Unlike other strategies, the Swarf strategy utilizes the side of the tool for machining and leaves a surface finish without any stepover or stepdown marks. Due to the nature of Swarf, there are some limitations to where the strategy can be applied.


In HSM Performance Pack it is easy to do selections on the geometry and the Swarf strategy supports the modes Contours and Surface.

The Contours mode requires that bottom and top contours are selected. Synchronization between the selected contours is automatically created and a toolpath is generated. The direction of the toolpath is similar to that of the bottom contour. The direction of the top contour is changed automatically if it does not match the direction of the bottom contour.

When using Contours mode, Swarf will generate nice and smooth toolpaths in most cases. However, since the surface is not taken into consideration, gouges might be created against the surface. Synchronization of contours might also fail in situations where the selected contours are too complicated.

Surface mode requires bottom, top contours and drive surface between them. Surface mode solves the issues that might occur in Contour mode by letting the user specify Drive and Check surfaces. Drive surfaces are normal machining surfaces used for synchronization between contours. The toolpath does not gouge against the contours and drive surfaces and

will attempt to machine with the side of the tool where possible. Check surfaces are used only for avoiding gouges and the toolpath is simply trimmed if the tool starts touching any of the specified Check surfaces.