Clipping a stl with a cylinder

Support
1

Hi there, I’m trying to clip a cylinder in a stl read from a file.
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But the thing is after cutting, the hole is hollow. What I expect is to have a closed surface inside (a tube). I tried different methods, but they seem not working. Does anyone know what solution may help? Thank you a lot!
Here is the code (the polydata below is read from a file)

    vtkNew<vtkCylinder> cylinder;
	cylinder->SetCenter(0.0, 0.0, 0.0);
	cylinder->SetRadius(m_AccessHoleRadius);

	vtkNew<vtkClipPolyData> clipper;
	clipper->SetInputData(polydata);
	clipper->SetClipFunction(cylinder);
	clipper->SetValue(0);
	clipper->Update();

	vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
	mapper->SetInputData(clipper->GetOutput());
	m_Actor->SetMapper(mapper);
	m_Actor->GetProperty()->SetDiffuse(GetNormalDiffuse());
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You can use vtkBooleanOperationPolyDataFilter instead of vtkClipPolyData.

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I tried that. This filter does not work. And I think there is some issues with this class, which is pointed out on this forum as well.
But thank you!