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      <title>Steep Containment</title>
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      <div class="title_topic5" id="xps10_pagetitle">Steep Containment</div>
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      <p class="para_topic">Steep Containment allows you to restrict the cut area based on the steepness of the tool path. It is used to control scallop height and avoid plunging the tool into the material on steep surfaces. Remove Edge Traces should be activated to prevent the tool from rolling over the edge of the cut area.</p>
      <p class="para_topic">Steep Angle enables you to determine when the system recognizes Part surfaces as being steep. This field is activated by the Steep Areas button. The Part surface angle is calculated at each contact point and then compared to the user-specified Steep Angle. The system recognizes the surface as being steep wherever the actual surface angle exceeds the user-specified Steep Angle. When the tool path is generated, Contact condition closed boundary cleanup entities are created from the surfaces that exceed the user-specified Steep Angle as illustrated above. &nbsp;For example, a flat surface has a steep angle of zero and a vertical wall has a steep angle of 90 degrees.</p>
      <p class="para_topic">There are two popular methods used to machine a cut area using a combination of two operations and steep containment:</p>
      <div class="title_division">Method One &nbsp;</div>
      <p class="para_division">Non-Steep Containment followed by Directional Steep (the following two figures ). &nbsp;This method is common for areas that do &nbsp;not contain a lot of near-vertical areas.&nbsp;</p>
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         <p align="center"><img align="bottom" src="graphics/steep.gif"></p>
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      <div class="title_figure"> Steep</div>
      <p class="para_division">Notice in the Figure above the large areas that were not cut (indicated by the number one) because the stepovers in the path were spread apart on some of the steep walls. &nbsp;In order to cut these areas, you must cut again using Directional Steep (see the figure &nbsp;below).</p>
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         <p align="center"><img align="bottom" src="graphics/direct.gif"></p>
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      <div class="title_figure">Directional Steep</div>
      <p class="para_division">As illustrated in the figure above, Directional Steep machines the areas greater than the steepest angle as viewed from the cut direction. &nbsp;It is used when you create a zig-zag path with no steep containment and you follow that with a zig-zag path with directional steep containment and a cut angle rotated 90 degrees from the first path (as in the first figure above).&nbsp;</p>
      <p class="para_division">None imposes no steepness restrictions on the tool path and allows the operation to machine the entire cut area.</p>
      <div class="title_division">Method Two</div>
      <p class="para_division">Use Non-Steep followed by Zlevel Profile Steep (the following two figures ):</p>
      <p class="para_division">Non-steep restricts the steepness of the tool path to the specified Steep Angle. The operation machines only the areas where the steepness of the tool path is less than or equal to the specified Steep Angle (see the figure below). Notice that the steep sides were not machined. &nbsp;In order to machine the steep areas, use the Zlevel Milling module (see the last figure). &nbsp;By using the same steep angle in both operations, the entire cut area is machined. &nbsp;This method is common when there are very steep areas in the cut area.</p>
      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/non_steep.gif"></p>
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      <div class="title_figure">Non-steep</div>
      <p class="para_division">In the figure below, &nbsp;Zlevel cut was used to machine the steep areas left uncut by the previous Non-steep cut in the figure above.</p>
      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/zlev_prof.gif"></p>
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      <div class="title_figure">Zlevel Profile Steep</div>
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            <td valign="top" align="left"><img align="left" src="../graphics/note.gif" alt="Note" title="Note"></td>
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               <div class="para_note">
                  <p class="para_note_body">Edge trace removal can change the edges of the region you want to cut. For example, the figure below illustrates an area milling non steep operation that cuts the purple cut area. When edge traces are not removed (clear the check box for Remove Edge Traces), passes are generated along the top edges of the cut area, as illustrated in the figure below. </p>
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      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/nsteep_edgetrc_remvl_off.gif"></p>
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      <div class="title_figure"> Edge Traces Not Removed</div>
      <p class="para_division">Notice in the figure above that the tool is on the top of the edge and may not cut material. &nbsp;Compare this with the figure below, &nbsp;where the edge traces are removed (select the check box for Remove Edge Traces). &nbsp;</p>
      <div class="figure">
         <p align="center"><img align="bottom" src="graphics/nsteep_edgetrc_remvl_on.gif"></p>
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      <div class="title_figure">Edge Traces Removed</div>
      <p class="para_division">Notice that when you select the check box for Remove Edge Traces, the tool stops before getting to the edge.</p>
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