Continuous spiral — Enable this option to stop the tool lifting from the surface when machining.
Enable Continuous spiral to have a toolpath that stays in constant contact with a surface, reducing the chance of leaving any dwell or witness marks on the surface caused by regular retract and approaches to the surface.
The standard Z level finishing toolpaths creates paths with a constant Z height as shown below. The tool either retracts or feeds along the surface between Z levels.
With Continuous spiral enabled, the toolpaths change into a continuous spiral. The toolpaths no longer have a constant Z height.
In to out — The default spiral motion starts at the edge of the feature and moves inwards. Enable this option to start the spiral at the center of the feature and move outwards.
Smoothing — This removes all sharp changes in direction. It works in a similar way to the Toolpath corner % raceline smoothing attribute, but smooths all toolpaths, not just corners.
This example shows a 3D spiral finish without smoothing:
And with smoothing:
Remachining — Click this button to open the Remachining dialog.
Holder collision clipping — Clips the toolpath where the holder or shank collides with a part surface, check surface, or unmachined stock. When selected, the Holder clearance and Shank clearance attributes are displayed on the Milling tab for the operation.
Machine maximum stock — Use with Holder collision clipping to machine the stock as close to the part without causing a holder collision. This creates smoother toolpaths with fewer retracts, which can improve the surface finish and reduce the machining time, but may cause increased air cutting on some parts.