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Click Profile Knuckle Command to display the Profile Knuckle Ribbon.
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Select a profile system crossing a curved plate transition.
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Click GC Point .
The Geometric Construction Palette, Geometric Construction ribbon, and the Geometric Construction Explorer display.
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In the Geometric Construction box of the ribbon or the Curves tab of the Geometric Construction Palette, select EdgesFromCurveOrSurface.
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In the graphic view or the Workspace Explorer, select the profile system.
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Click Continue.
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In the Geometric Construction box of the ribbon or the Points tab of the Geometric Construction Palette, select PointAtCurveMiddle to specify the midpoint of the arc to place the profile knuckle.
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In the Geometric Construction Explorer, select the needed arc on the profile landing curve. Select [Not Named] elements under EdgesFormCurveOrSurf until the correct curve is highlighted in the graphic view.
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Click Continue, and then click Close.
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Select the manufacturing method.
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Click Finish.
A knuckle point is added to the profile at the midpoint of the arc.