diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5413eec..eafd6db 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -60,7 +60,9 @@ target_sources(pfe PRIVATE
   src/project_surface_points_on_poly.cc
   src/project_surface_points_on_poly.h
   src/remove_external_cells_filter.cc
-  src/remove_external_cells_filter.h)
+  src/remove_external_cells_filter.h
+  src/relaxation_filter.cc
+  src/relaxation_filter.h)
 
 target_link_libraries(pfe PRIVATE ${VTK_COMPONENTS})
 
diff --git a/src/relaxation_filter.cc b/src/relaxation_filter.cc
new file mode 100644
index 0000000..d70b0a1
--- /dev/null
+++ b/src/relaxation_filter.cc
@@ -0,0 +1,18 @@
+#include "relaxation_filter.h"
+
+#include <vtkUnstructuredGrid.h>
+#include <vtkPointData.h>
+#include <vtkCellData.h>
+#include <vtkDoubleArray.h>
+#include <vtkCellIterator.h>
+
+vtkStandardNewMacro(RelaxationFilter);
+
+vtkTypeBool RelaxationFilter::RequestData(
+	vtkInformation *request,
+	vtkInformationVector **inputVector,
+	vtkInformationVector *outputVector) {
+	
+
+	return true;
+}
diff --git a/src/relaxation_filter.h b/src/relaxation_filter.h
new file mode 100644
index 0000000..b760f12
--- /dev/null
+++ b/src/relaxation_filter.h
@@ -0,0 +1,21 @@
+#ifndef RELAXATION_FILTER_H
+#define RELAXATION_FILTER_H
+
+
+#include <vtkUnstructuredGridAlgorithm.h>
+#include <vtkIdList.h>
+
+class RelaxationFilter : public vtkUnstructuredGridAlgorithm {
+public:
+	static RelaxationFilter *New();
+	vtkTypeMacro(RelaxationFilter, vtkUnstructuredGridAlgorithm);
+	vtkTypeBool RequestData(vtkInformation *request,
+							vtkInformationVector **inputVector,
+							vtkInformationVector *outputVector) override;
+
+protected:
+	~RelaxationFilter() override = default;
+};
+
+
+#endif