Z plunge distance on bottom radius

Learn more about the interface for the Lead in/Lead out parameters, by clicking the link here.

Definition

The Z Plunge Distance on Bottom Radius defines the vertical (Z-axis) movement applied during the Lead-In and Lead-Out arc transitions.

When this parameter is set to 0, the tool follows the Lead-In and Lead-Out paths without any vertical movement, remaining at a constant Z level.

When a value is defined, the tool performs a progressive vertical plunge along the arc, descending (or ascending) while following the entry or exit radius. This creates a smoother transition into and out of the material.

• Without Z plunge: the toolpath remains flat in the XY plane.

• With Z plunge: the toolpath follows a combined XY + Z movement, resulting in a sloped entry and exit.

This parameter applies to both Lead-In and Lead-Out, improving cutting conditions by reducing sudden tool engagement and distributing the load more gradually.