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      <title>Cavity Milling Overview</title>
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      <div class="title_topic2" id="xps10_pagetitle">Cavity Milling Overview</div>
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      <p class="para_topic">Cavity Milling operations remove volumes of material in planar layers and are most commonly used to rough out material before a finishing operation. Use Cavity Milling for parts with tapered walls and contoured floors.</p>
      <p class="para_topic">Cavity Milling and Planar Milling are similar in that they both remove material in cut levels that are perpendicular to the Tool Axis. However, the two operation types differ in the method used to define the material.</p>
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            <p class="para_item">Planar Milling uses boundaries to define the Part material.</p>
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            <p class="para_item">Cavity Milling uses boundaries, faces, curves, and bodies to define the Part material.</p>
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      <p class="para_topic">Planar Milling is intended to cut parts with vertical walls, and planar islands and floors normal to the tool axis. Cavity Milling is intended for parts with tapered walls and contoured floors as illustrated below.</p>
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      <div class="title_figure">Planar and Cavity Mill Parts</div>
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