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      <title>Floor &mdash; Planar Milling</title>
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      <div class="title_topic2" id="xps10_pagetitle">Floor &mdash; Planar Milling</div>
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      <p class="para_topic">Floor defines the lowest (last) cut level. All cut levels are generated parallel to the Floor plane. Only one Floor can be defined per operation. Redefining the Floor automatically replaces the existing Floor.</p>
      <p class="para_topic">The following figure illustrates an example of how the Floor correctly defines the lowest cut level when a Blank boundary is used.</p>
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         <p align="center"><img align="bottom" src="graphics/pcmill_floor.gif"></p>
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      <div class="title_figure">Floor Defining Lowest Level of Blank Geometry</div>
      <p class="para_topic">The following figure illustrates an example of how the Floor correctly defines the lowest cut level when only Part boundaries are used.</p>
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         <p align="center"><img align="bottom" src="graphics/pcmill_floorgro.gif"></p>
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      <div class="title_figure">Floor Defining Lowest Level of Part Geometry</div>
      <p class="para_topic">The cutter must be able to reach the Floor without gouging the part. If the Floor defines a cut level that is inaccessible as illustrated below, an error message is displayed.</p>
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         <p align="center"><img align="bottom" src="graphics/pcmill_access_floor.gif"></p>
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      <div class="title_figure">Inaccessible Floor Plane</div>
      <p class="para_topic">If you do not specify a Floor, the system uses the X-Y plane of the Machine Coordinate System (MCS).</p>
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