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The default Feed Plane of the Expert NURBS Cutter is based on the entry in Material Z Location of the Knowledge Editor. Feed Distance to Material (Tool Editor entry) is added to the entry in Material Z Location. An option exists to allow the Feed Plane to vary, based on where the next X or Y cutting motion(s) begins. The Feed Distance to Material entry is added to this position instead of the Material Z Location. This option is controlled by the NC Variable "NCS_CutPlaneMode". When "NCS_CutPlaneMode "is set to True (T) the toolpath will output rapid motions to within the value of Feed Distance to Material from where material is calculated to be already removed.
To change this NC Variable type NCVAR, select SYSTEM, and change "NCS_CutPlaneMode" to T. Although cycle time can be longer when feeding begins at Material Z Location it is generally considered safer to avoid rapid motions below this plane. You choose the method that best suits your company's policies and procedures. You can change this NC Variable at any time. The Examples in this tutorial are all run with this NC Variable set to nil.
