Add another machining lane to improve the boundary quality of the machined area.

This parameter appears in the Tool Trajectory section for Rough, ReRough and Finish milling (in Finish milling, the parameter appears when Horiz. Machining Method = Parallel).
In general, depending on the strategy involved, this parameter is either called Pre-Final Pass or Final Pass. In parallel machining, this parameter is used to add a Final Pass to remove the cusps at the edges of parallel lanes. In spiral machining, this parameter is used to add a Pre-Final Pass (a milling lane before the final pass), in order to reduce the load on the cutter at the final pass.
The following options are available:
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None |
Do not define a final / pre-final milling motion. | ||
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All Around |
Perform a final / pre-final pass of the milled area - all around the boundary. The parameter Margin for Final / Pre-Final Pass is displayed:
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On Pencil Lines |
Perform a final pass of the (parallel machined) milled area - on pencil lines (only along boundaries with other machined surfaces and not air boundaries). The parameter Margin for Final Pass is displayed and its value is optimized by the system.
This option is available when using Finish Mill By Limit Angle. |
(This parameter is set in the Tolerance & Surface Offset section of the Procedure Parameter Table.)