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      <title>Face Milling</title>
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      <div class="title_topic3" id="xps10_pagetitle">Face Milling</div>
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      <div class="title_division">Face Milling Overview</div>
      <p class="para_division">Face Milling is best at cutting planar faces on solid bodies such as pads on a casting. &nbsp;By picking the faces, the system automatically knows not to gouge the rest of the part. &nbsp;</p>
      <p class="para_division">There are three templates provided for creating face milling operations. &nbsp;Create Operation &rarr; Mill_Planar &rarr; and then selecting one of the following:</p>
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            <p class="para_item">Face Milling Area &nbsp; <img align="bottom" src="graphics/face_milling_area.gif" border="0"> Face Milling Area has part geometry, cut area, wall geometry, check geometry, and automatic wall selection.
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            <p class="para_item">Face Milling &nbsp; <img align="bottom" src="graphics/face_milling.gif" border="0"> Face Milling has part geometry, faces (blank boundaries), check boundaries, and check geometry.
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            <p class="para_item">Face Milling Manual &nbsp; <img align="bottom" src="graphics/face_milling_manual.gif" border="0"> Face Milling Manual contains all the geometry types, and the cut pattern is set to mixed.
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      <div class="title_division">Specify Face Geometry</div>
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            <p class="para_item">With Face Milling, you can specify the face geometry simply by selecting the faces to be machined. &nbsp;</p>
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            <p class="para_item">You also can define face geometry by selecting existing curves and edges or by specifying a sequence of points in much the same way as in Planar Milling. </p>
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            <p class="para_item">You can easily create boundaries from a face and its chamfers using an option called Ignore Chamfers. </p>
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            <p class="para_item">Face Milling automatically combines regions that are within close proximity and need to be cut to the same height.</p>
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            <p class="para_item">Additionally, with Face Milling you can program the cutting and traversing of voids.</p>
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      <div class="title_division">Specify the amount of material to be removed</div>
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            <p class="para_item">With Face Milling, &nbsp;you can specify the amount of material to be removed and the surrounding part and check geometry to avoid gouging. The selected faces define the floors to be faced off. By selecting the solid body as part geometry, the system can avoid gouging the part.</p>
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            <p class="para_item">The thickness of the material to be removed is measured upward from the level of a face boundary plane and along the tool axis. All boundaries of the Face Geometry can be defined at different levels. The tool axis is automatically defined as the normal of the first selected face boundary plane. Since Face Milling removes material in planar levels with respect to the tool axis, the normal of a face boundary plane must be parallel with the tool axis. If it is not, the face will be ignored during tool path generation.</p>
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      <p align="center"><img align="bottom" src="graphics/face_camfi18.gif"></p>
      <p class="para_division">Although Planar Mill can be used to perform Face Milling, the Face Milling Module greatly simplifies the process. In Planar Mill, you can create the boundary geometry by picking the desired face, lifting the boundary to the desired height, and selecting the floor at the plane of the planar face. Several operations may be needed when planar faces to be machined are at different levels.</p>
      <p class="para_division">A Face Milling operation is created from a template, and requires geometry, a tool, and parameters to generate a tool path. The face geometry is required as an input for tool path generation. For each selected face, the processor traces the geometry, identifies regions to be machined, and cuts these regions without gouging the part.</p>
      <p class="para_division">The Face Milling dialog box enables you to specify whether you wish to define Part, Face, or Check geometry. It contains many parameters common to Planar Milling. Each is described in the following sections.</p>
      <div class="title_division">Engages and Retracts</div>
      <p class="para_division">For Face Milling automatic engages/retracts, the system always attempts to generate safe moves. For engage moves, this means engaging from an open air position whenever possible. </p>
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