Use the Z Level Roughing Areaclear cycle to rough cut surfaces.
The Z Level cycles produce profiles of the surfaces at successive depths, taking into account the full geometry of the tool. This ensures that the tool does not gouge the part. The technique is also known as 'water-line machining'. Z Level cycles are useful for machining parts which contain significant depressions and bulges, such as distributor caps.
When milling large flat or gently curved parts, use the Parallel Lace cycle instead.
When using a Z Level cycle, note that:
EdgeCAM automatically places the toolpath on the correct side of the surface.
You can specify 2D geometry to represent islands. When generating the toolpath, the cycle automatically adds the tool offset to the geometry.
You can specify 2D geometry to represent toolpath boundaries. The toolpath will be clipped to the specified boundary, although lead in and out moves are allowed to go outside the boundary.
You can specify where you want the toolpath to start.