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      <title>Trim By</title>
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      <div class="title_topic3" id="xps10_pagetitle">Trim By</div>
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      <p class="para_topic">Cavity Milling, Zlevel Milling.</p>
      <p class="para_topic">Trim By enables the processor to recognize Blank Geometry on core parts where Blank Geometry has not been explicitly defined. Exterior Edges (Tolerant Machining OFF) uses exterior edges of faces, sheets, or surface regions defining Part Geometry that are not adjacent to other edges defining Part Geometry to generate a trace at each cut level by positioning the tool along the edge and then offsetting it outside by the tool radius. Silhouette (Tolerant Machining ON) uses the silhouette of the part geometry (which unlike Exterior Edged may include Body geometry) to generate a trace by positioning the tool along the silhouette of the part geometry and then offsetting it outside by the tool radius. The silhouette can be thought of as the &quot;shadow&quot; of the part projected along the tool axis.</p>
      <p class="para_topic">When using Trim By Silhouette with Tolerant Machining ON, the processor uses the traces at the bottom of the defined part geometry as Trim shapes. These shapes will be projected along the tool axis to each cut level and will be used in the process of generating the machinable regions as Trim Shapes.</p>
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