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      <title>Existing Surface</title>
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      <div class="title_topic2" id="xps10_pagetitle">Existing Surface</div>
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      <p class="para_topic">Sometimes the automated features of Sheet Patch Up are not suited for a particular application. You can also create the surface patch manually using Free Form features or other NX functions.</p>
      <p class="para_topic">Once created, activate the Mold Tools toolbar and choose Existing Surface, where you're prompted to select the surface you created (or another existing surface you may wish to use). These surfaces are copied to CAVITY_SURFACE layer 28 and CORE_SURFACE layer 27. Later, when you create Core and Cavity, they are highlighted automatically.</p>
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      <div class="title_figure">Existing Surface button</div>
      <p class="para_topic">You can also use Existing Surface to highlight patched up surfaces to check whether the holes are patched up properly.</p>
      <p class="para_topic">When you select Existing Surface, all patched-up surfaces are highlighted. You can select new surfaces or deselect existing surfaces to remove them from the existing pool.</p>
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                        <p class="para_note_body">NOTE: Before you use Existing Surface, sew as many Free Form surfaces as possible. There are two reasons. First, after you sew them together, Mold Wizard copies just the sewed sheets. This shortens the feature. Second, it's faster to search the region boundary with a sewed sheet.</p>
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                        <p class="para_note_body">NOTE: Do not patch up a hole twice. Afterwards, you will have difficulties in sewing core and cavity surfaces together because they overlap each other.</p>
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