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Using the Split Body tool
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Use the Split Body tool to split a body by one or more of its faces or edges. Then select one or more regions for deletion. The Split Body tool expects that you have already selected the cutter objects. From these faces or edges, the single target body is inferred, since a face or edge can only belong to one body or surface. If only one body face is selected as a cutter, the default action is to extend that face to cut as far as it can through the body. If a face of a surface is selected, then it is automatically removed.

The Split Body tool works in two modes:

You can use the Split Body tool to:

You can select a body or surface from the Structure tree as the target and a plane from the Structure tree as the cutter.

When splitting with a plane passing through the entire body, some cuts may not be desired. Use the Local Slicing option to gain specific control over which cuts are applied.

To split a body by one of its faces

  1. Click the Split Body tool from the Intersect ribbon group.

  2. Select the faces or edges you want to use to cut the body.

    Hold Ctrl and click or draw a box to select multiple faces or edges.

    You can create temporary geometry and select it to cut the body.

  3. Mouse over the body to see the regions created by the cut.

  4. (Optional) Click a region to delete it.

    When you are finished deleting regions, select another tool.

    If the selected edges do not completely encircle a portion of a body or surface, no region selection can occur.

Select a face with the Select tool, then select the Split Body tool to cut the body with the face.

 

To selectively split a body:

  1. Click the Split Body tool in the Intersect group on the Design tab

  2. Select the body

  3. Check ON the Local Slicing option

  4. Click the cutter plane; you will see a blue outline which previews local slicing locations for splitting the body

  5. Click on a blue outline preview to cut the body; the Select Regions tool guide is then activated however, holding the Ctrl key or clicking the Select Cuts tool guide allows you to create additional cuts

  6. Click a region to delete it

If you need to make multiple cuts on the same target body, manually click the Select Cuts tool guide to make it sticky before step 5.

 

Tool guides

Within the Split Body tool, there are several tool guides that help step you through the splitting process:

The Select Cutter tool guide is active by default. When this tool guide is active, click to select the face you want to use to cut the body.

The Select Cuts tool guide activates when the Local Slicing option is selected. Possible cuts are highlighted where the plane intersects the body. Mouse over the cuts to highlight them for selection.

The Select Regions tool guide activates once you once the body is cut by the face. When this tool guide is active, mouse over the target to see the regions created by the cut. The regions you can delete are highlighted in red.

Options

The following options are available in the Split Body tool. Once you select the edge or face to pull, select these options from the Options docking panel, or right-click and select them from the mini-toolbar:

Merge when done

Select this option to merge all touching bodies or surfaces when you exit the Split Body tool. Hidden objects are not merged.

Extend faces

Extends the selected cutter face to cut through the target body.

Local Slicing

Select this option with the Select Cuts tool guide to choose specific cuts made by a plane passing through the entire body.

Examples

Body split by a spline face

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