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      <div class="title_topic4" id="xps10_pagetitle">Safe Engage substitutions</div>
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('mfgmilling/noncut_moves_ov.html');return(false);">Overview</a></p>
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('mfgmilling/ncm_list_opt.html');return(false);">Options</a></p>
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               <p class="para_td"><a class="links" href="javascript:void(0)" onclick="top.openFile('mfgmilling/ncm_list_rt.html');return(false);">Related Topics</a></p>
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      </table><br><p class="para_topic">As a general rule, open area engages are preferred, then closed area, then tool axis with a warning. However, if the <b class="uiTerm">Minimum Ramp</b> is greater than 0, and the closed area engage fails, the region will not be cut.
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      <p class="para_topic">If the <b class="uiTerm">Open Area</b> engage fails and a <b class="uiTerm">Closed Area</b> engage is used as a backup, the <b class="uiTerm">Closed Area</b> engage (<b class="uiTerm">Ramp</b> or <b class="uiTerm">Helical</b>) is first attempted outside the <b class="uiTerm">Minimum Clearance value</b> for <b class="uiTerm">Open Area</b> to avoid putting the tool 100 percent inside the material.
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      <p class="para_topic">For finishing, <b class="uiTerm">Zlevel</b>, <b class="uiTerm">Cavity Milling</b>, <b class="uiTerm">Face Milling</b> and <b class="uiTerm">Planar Profile</b> operations, the <b class="uiTerm">Closed Area</b> engage is used as a backup for <b class="uiTerm">Open Area</b> engages because the region only has material along the walls and the area within the region is open.
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      <p class="para_topic">Examples of engage substitutions:</p>
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                  <p class="para_td">Specified engage type</p>
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                  <p class="para_td">Engage type substituted </p>
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                  <p class="para_td"><b class="uiTerm">Helical</b></p>
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                  <p class="para_td"><b class="uiTerm">Ramp on Shape</b></p>
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                  <p class="para_td"><b class="uiTerm">Helical</b> at a pre-drill point
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                  <p class="para_td"><b class="uiTerm">Plunge</b></p>
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                  <p class="para_td"><b class="uiTerm">Zig-zag</b> at a pre-drill point
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                  <p class="para_td"><b class="uiTerm">Plunge</b></p>
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                  <p class="para_td"><b class="uiTerm">Linear</b>, <b class="uiTerm">Length</b> = 50 percent of tool diameter
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                  <p class="para_td"><b class="uiTerm">Linear</b>, <b class="uiTerm">Length</b> = 25 percent of tool diameter
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                  <p class="para_td">If the above can not be inserted safely, then NX substitutes a <b class="uiTerm">Closed Area</b> engage type.
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                  <p class="para_td"><b class="uiTerm">Linear</b>, <b class="uiTerm">Swing Angle</b> = 90 degrees
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                  <p class="para_td"><b class="uiTerm"></b></p>
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                  <p class="para_td"><b class="uiTerm">Linear</b>, <b class="uiTerm">Swing Angle</b> = 135 degrees
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                  <p class="para_td"><b class="uiTerm"></b></p>
                  <p class="para_td">If the above can not be inserted safely, then NX substitutes a <b class="uiTerm">Closed Area</b> engage type.
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                  <p class="para_td"><b class="uiTerm">Arc</b>, <b class="uiTerm">Radius</b> = 50 percent
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                  <p class="para_td"><b class="uiTerm">Closed Area</b> engage type
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                  <p class="para_td"><b class="uiTerm">Point</b></p>
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                  <p class="para_td"><b class="uiTerm">Linear</b></p>
                  <p class="para_td">If the above can not be inserted safely, then NX substitutes a <b class="uiTerm">Closed Area</b> engage type.
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