Trim Particular Elements: Manual Trim
For the automatic trim logic, to trim several selected elements automatically in one step, see: Trim Multiple Selected Elements: Automatic Trim.
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only that part of the tunnel-shaped Shell that is inside the V-shell should remain; and
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2.
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From the context menu, choose Connect > Trim Elements to Roof/Shell.
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Note that the cursor has changed to a little roof. Use it to click the element to use as the trimming element (here, the V-shaped shell, with red feedback).
Note: If Trimming Bodies are not on, they will appear here automatically for the duration of the trimming operation.
4.
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Now you must select the part of the tunnel that you want to retain. Move the cursor over the parts of the tunnel (inside and outside of the V-shell) and see how the blue feedback identifies them: this indicates the options for which parts of the tunnel can be retained after the trim:
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5.
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You want to retain the part that is inside, so click on that part. The trim is executed.
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Note: Alternatively, Ctrl-click one of the parts to eliminate it. The feedback will always show in blue the part that will be retained.
2.
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From the context menu, choose Connect > Trim Elements to Roof/Shell.
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