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      <title>Part Geometry</title>
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      <div class="title_topic3" id="xps10_pagetitle">Part Geometry</div>
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      <p class="para_topic">The specified part geometry works in combination with the drive geometry (usually a boundary) to define the cut region.</p>
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      <div class="title_figure">Part Geometry</div>
      <p class="para_topic">You may specify Bodies (sheet or solid), Faceted Bodies, Surface Regions, or Faces as Part Geometry. Selecting a solid body provides several advantages. Change processing is easier, because the associativity is maintained to the entire solid body, and not the individual faces, which may change when the solid updates. It is also easier to select a solid body than individual faces. If you want to cut only some of the faces on a solid, you can use cut area, drive geometry, or other containment, depending on the drive method, to limit your cutting to less that the entire part. &nbsp;</p>
      <p class="para_topic">Surface Regions are created in the Prepare Geometry function and offer view of Part Geometry and how it relates to the Drive Geometry.</p>
      <p class="para_topic">Faceted Bodies can be imported as STL files which have no associated surface geometry. They are supported by the following CAM Fixed Axis Surface Milling (FASM) operations: Cavity Milling Tolerant Method, Zlevel Milling, Flowcut Drive Method, Area Milling Drive Method, and Surface Contouring Drive Methods that have tool axis equal to project vector.</p>
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