diff --git a/src/meshlabplugins/editsegment/cutting.h b/src/meshlabplugins/editsegment/cutting.h
index 1b70689be..d90f31b27 100644
--- a/src/meshlabplugins/editsegment/cutting.h
+++ b/src/meshlabplugins/editsegment/cutting.h
@@ -84,7 +84,7 @@ namespace vcg {
 			//last punta all'ultimo elemento valido
 			--last;
 			int num_to_remove = 0;
-			
+
 			while (iter != last){
 				if ((*iter).v->IMark() != U) {
 					//elemento già marchiato, si può rimuovere dalla coda
@@ -124,7 +124,9 @@ namespace vcg {
 	private:
 		MESH_TYPE * mesh;
 		SimpleTempData<VertContainer, CurvData> *TDCurvPtr;
-		
+
+		bool curvatureUpdate;
+
 		TripletHeap Q;
 		float _normalWeight;
 		float _curvatureWeight;
@@ -158,9 +160,9 @@ namespace vcg {
 		}
 
 
-		
-			//prende solo il più vicino
-			void AddNearestToQ(VertexType * v) {
+
+		//prende solo il più vicino
+		void AddNearestToQ(VertexType * v) {
 
 			float dist = 0.0f;
 			float min_dist = std::numeric_limits<float>::max();
@@ -196,37 +198,7 @@ namespace vcg {
 				Q.push(tempTriplet);
 			}
 		}
-		/* 
-		//prende tutti i vicini
-		void AddNearestToQ(VertexType * vs) {
 
-			float dist = 0.0f;
-			
-			vcg::face::JumpingPos<FaceType> pos(v->VFp(), v);
-
-			VertexType* firstV = pos.VFlip();
-			
-			VertexType* tempV=0;
-
-			do {
-				pos.NextE();
-				tempV = pos.VFlip();
-				assert(tempV->P() != v->P());
-				if (tempV->IMark() == U) {
-					dist = ImprovedIsophoticDist(v, tempV);
-					
-					CuttingTriplet<VertexType> tempTriplet;
-					tempTriplet.d = dist;
-					tempTriplet.v = tempV;				
-					switch(v->IMark()) {
-						case iF: tempTriplet.m = F; break;
-						case iB: tempTriplet.m = B; break;
-						default : tempTriplet.m = (MarkType)v->IMark(); break;
-					}
-					Q.push(tempTriplet);
-				}
-			} while(tempV != firstV);	
-		}*/
 
 		void AddNeighborhoodNearestToQ(VertexType * v /*,std::ofstream & file*/) {
 			vcg::face::JumpingPos<FaceType> pos(v->VFp(), v);
@@ -252,6 +224,7 @@ namespace vcg {
 			_curvatureWeight = 5.0f;
 			TDCurvPtr = new SimpleTempData<VertContainer, CurvData>((*mesh).vert);
 			TDCurvPtr->Start(CurvData());
+			curvatureUpdate = false;
 		}
 
 		~MeshCutting() {
@@ -292,32 +265,29 @@ namespace vcg {
 			file.open("editsegment.log");
 
 			curvature_start_t = clock();
-			//Computing principal curvatures and directions for all vertices
-			vcg::CurvatureTensor<MESH_TYPE>ct(mesh, TDCurvPtr);
-			ct.ComputeCurvatureTensor();
-			//now each vertex has principals curvatures and directions in its temp data
-			curvature_end_t = clock();
 
-			//if (file) file << "Inizializzazione da input." << std::endl;
+			if (!curvatureUpdate) {
+				//Computing principal curvatures and directions for all vertices
+				vcg::CurvatureTensor<MESH_TYPE>ct(mesh, TDCurvPtr);
+				ct.ComputeCurvatureTensor();
+				curvatureUpdate = true;
+				//now each vertex has principals curvatures and directions in its temp data
+			}
+			curvature_end_t = clock();
 
 			//second iteration on the marked vertex
 			for (vi=(*mesh).vert.begin(); vi!=(*mesh).vert.end(); ++vi) {
 				if ( !vi->IsD() && (vi->IMark() != U))
-					//AddNearestToQ(&(*vi),file);	
 					AddNearestToQ(&(*vi));	
 			}
 
-			//if (file) file << "Fine inizializzazione da input. Elementi aggiunti: " << Q.size() << std::endl;
-
 			int step_counter = 0;
 			while (vertex_to_go != 0) {
 				//algorithm main loop
 
 				if (Q.empty()) {
-					//if (file) file << "Coda vuota. Re-Inizializzazione." << std::endl;
 					for (vi=(*mesh).vert.begin(); vi!=(*mesh).vert.end(); ++vi) {
 						if ( !vi->IsD() && (vi->IMark() != U))
-							//AddNearestToQ(&(*vi),file);	
 							AddNearestToQ(&(*vi));
 					}
 					if (Q.empty()) break;
@@ -332,13 +302,10 @@ namespace vcg {
 					if (tempTriplet.v->IMark() == U) {
 						tempTriplet.v->IMark() = tempTriplet.m;
 						--vertex_to_go; 
-						//if (file) file << "Estrazione: d=" << tempTriplet.d << std::endl;
 						AddNearestToQ(tempTriplet.v/*, file*/);	
 						AddNeighborhoodNearestToQ(tempTriplet.v/*,file*/);
-					} else {
-						//if (file) file << "Estrazione: Elemento nullo" << std::endl;
-					}
-					
+					} 
+
 					//rimozione degli elementi inutili nella coda
 					++step_counter;
 					if (step_counter%30000 == 29999) {
@@ -360,6 +327,12 @@ namespace vcg {
 			}
 		}
 
+		void UpdateCurvature()
+		{
+			vcg::CurvatureTensor<MESH_TYPE>ct(mesh, TDCurvPtr);
+			ct.ComputeCurvatureTensor();
+		}
+
 		void Colorize(bool selectForeground, bool doRefine) {
 			FaceIterator fi;
 			VertexIterator vi;
@@ -517,8 +490,8 @@ namespace vcg {
 						if (sec_prod != 0.0f) {
 							if (tmp_face->FFp(sec_faceid)->IsS()) {
 								tmp_face->SetS();
-						} else {
-							tmp_face->ClearS();
+							} else {
+								tmp_face->ClearS();
 							}
 							tmp_face->ClearUserBit(bitflag);
 						} else {
diff --git a/src/meshlabplugins/editsegment/editsegment.cpp b/src/meshlabplugins/editsegment/editsegment.cpp
index 3bc93dc63..bc98ea684 100644
--- a/src/meshlabplugins/editsegment/editsegment.cpp
+++ b/src/meshlabplugins/editsegment/editsegment.cpp
@@ -292,6 +292,9 @@ void EditSegment::StartEdit(QAction * mode, MeshModel & m, GLArea * parent) {
 		meshcut_dock->setFloating(true);
 		QObject::connect(meshCutDialog, SIGNAL(meshCutSignal()), this,
 			SLOT(MeshCutSlot()));
+			
+		QObject::connect(meshCutDialog, SIGNAL(updateCurvatureSignal()), this,
+			SLOT(UpdateCurvatureSlot()));
 		QObject::connect(meshCutDialog, SIGNAL(selectForegroundSignal(bool)),this, SLOT(SelectForegroundSlot(bool)));
 
 		QObject::connect(meshCutDialog, SIGNAL(doRefineSignal(bool)),this, SLOT(doRefineSlot(bool)));
@@ -501,6 +504,12 @@ void EditSegment::MeshCutSlot() {
 	glarea->update();
 }
 
+void EditSegment::UpdateCurvatureSlot() {
+	if (meshCut) {
+		meshCut->UpdateCurvature();
+	}
+}
+
 void EditSegment::SelectForegroundSlot(bool value) {
 	selectForeground = value;
 }
diff --git a/src/meshlabplugins/editsegment/editsegment.h b/src/meshlabplugins/editsegment/editsegment.h
index 000642fce..e9dc9122a 100644
--- a/src/meshlabplugins/editsegment/editsegment.h
+++ b/src/meshlabplugins/editsegment/editsegment.h
@@ -85,6 +85,7 @@ public:
 
 public slots:
 	void MeshCutSlot();
+	void UpdateCurvatureSlot();
 	void SelectForegroundSlot(bool);
 	void doRefineSlot(bool);
 	void changeNormalWeight(int);
diff --git a/src/meshlabplugins/editsegment/meshcutdialog.cpp b/src/meshlabplugins/editsegment/meshcutdialog.cpp
index 43c65a7f9..d68238145 100644
--- a/src/meshlabplugins/editsegment/meshcutdialog.cpp
+++ b/src/meshlabplugins/editsegment/meshcutdialog.cpp
@@ -18,6 +18,10 @@ void MeshCutDialog::on_meshSegmentButton_clicked() {
 	emit meshCutSignal();
 }
 
+void MeshCutDialog::on_updateCurvatureButton_clicked() {
+	emit updateCurvatureSignal();
+}
+
 void MeshCutDialog::on_foreRadioButton_clicked() {
 	emit selectForegroundSignal(true);
 }
diff --git a/src/meshlabplugins/editsegment/meshcutdialog.h b/src/meshlabplugins/editsegment/meshcutdialog.h
index 18406940b..2c7349314 100644
--- a/src/meshlabplugins/editsegment/meshcutdialog.h
+++ b/src/meshlabplugins/editsegment/meshcutdialog.h
@@ -22,6 +22,8 @@ private:
 
 	public slots:
 		void on_meshSegmentButton_clicked();
+		void on_updateCurvatureButton_clicked();
+		
 		void on_foreRadioButton_clicked();
 		void on_backRadioButton_clicked();
 
@@ -38,6 +40,8 @@ private:
 		
 	signals:
 		void meshCutSignal();
+		void updateCurvatureSignal();
+		
 		void selectForegroundSignal(bool);
 		void doRefineSignal(bool);
 		void normalWeightSignal(int);
diff --git a/src/meshlabplugins/editsegment/meshcutdialog.ui b/src/meshlabplugins/editsegment/meshcutdialog.ui
index ef4377c05..97b6a8059 100644
--- a/src/meshlabplugins/editsegment/meshcutdialog.ui
+++ b/src/meshlabplugins/editsegment/meshcutdialog.ui
@@ -5,7 +5,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>139</width>
+    <width>167</width>
     <height>269</height>
    </rect>
   </property>
@@ -17,7 +17,7 @@
     <rect>
      <x>0</x>
      <y>0</y>
-     <width>141</width>
+     <width>181</width>
      <height>271</height>
     </rect>
    </property>
@@ -28,13 +28,13 @@
     <attribute name="title" >
      <string>Basic</string>
     </attribute>
-    <widget class="QWidget" name="layoutWidget" >
+    <widget class="QWidget" name="" >
      <property name="geometry" >
       <rect>
-       <x>12</x>
-       <y>16</y>
-       <width>116</width>
-       <height>153</height>
+       <x>10</x>
+       <y>18</y>
+       <width>138</width>
+       <height>184</height>
       </rect>
      </property>
      <layout class="QVBoxLayout" >
@@ -81,23 +81,37 @@
          </widget>
         </item>
         <item>
-         <widget class="QSlider" name="penRadiusSlider" >
-          <property name="maximum" >
-           <number>10</number>
-          </property>
-          <property name="singleStep" >
-           <number>1</number>
-          </property>
-          <property name="pageStep" >
-           <number>2</number>
-          </property>
-          <property name="value" >
-           <number>5</number>
-          </property>
-          <property name="orientation" >
-           <enum>Qt::Horizontal</enum>
-          </property>
-         </widget>
+         <layout class="QHBoxLayout" >
+          <item>
+           <widget class="QSlider" name="penRadiusSlider" >
+            <property name="maximum" >
+             <number>10</number>
+            </property>
+            <property name="singleStep" >
+             <number>1</number>
+            </property>
+            <property name="pageStep" >
+             <number>2</number>
+            </property>
+            <property name="value" >
+             <number>5</number>
+            </property>
+            <property name="orientation" >
+             <enum>Qt::Horizontal</enum>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QSpinBox" name="penRadiusSpinBox" >
+            <property name="maximum" >
+             <number>10</number>
+            </property>
+            <property name="value" >
+             <number>5</number>
+            </property>
+           </widget>
+          </item>
+         </layout>
         </item>
        </layout>
       </item>
@@ -108,6 +122,13 @@
         </property>
        </widget>
       </item>
+      <item>
+       <widget class="QPushButton" name="updateCurvatureButton" >
+        <property name="text" >
+         <string>Update Curvature</string>
+        </property>
+       </widget>
+      </item>
       <item>
        <widget class="QPushButton" name="resetButton" >
         <property name="text" >
@@ -122,13 +143,13 @@
     <attribute name="title" >
      <string>Advanced</string>
     </attribute>
-    <widget class="QWidget" name="layoutWidget" >
+    <widget class="QWidget" name="" >
      <property name="geometry" >
       <rect>
-       <x>1</x>
-       <y>13</y>
-       <width>132</width>
-       <height>224</height>
+       <x>12</x>
+       <y>12</y>
+       <width>138</width>
+       <height>170</height>
       </rect>
      </property>
      <layout class="QVBoxLayout" >
@@ -218,23 +239,37 @@
          </widget>
         </item>
         <item>
-         <widget class="QSlider" name="normalWeightSlider" >
-          <property name="maximum" >
-           <number>10</number>
-          </property>
-          <property name="pageStep" >
-           <number>2</number>
-          </property>
-          <property name="value" >
-           <number>5</number>
-          </property>
-          <property name="orientation" >
-           <enum>Qt::Horizontal</enum>
-          </property>
-          <property name="tickInterval" >
-           <number>1</number>
-          </property>
-         </widget>
+         <layout class="QHBoxLayout" >
+          <item>
+           <widget class="QSlider" name="normalWeightSlider" >
+            <property name="maximum" >
+             <number>10</number>
+            </property>
+            <property name="pageStep" >
+             <number>2</number>
+            </property>
+            <property name="value" >
+             <number>5</number>
+            </property>
+            <property name="orientation" >
+             <enum>Qt::Horizontal</enum>
+            </property>
+            <property name="tickInterval" >
+             <number>1</number>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QSpinBox" name="normalWeightSpinBox" >
+            <property name="maximum" >
+             <number>10</number>
+            </property>
+            <property name="value" >
+             <number>5</number>
+            </property>
+           </widget>
+          </item>
+         </layout>
         </item>
        </layout>
       </item>
@@ -248,26 +283,57 @@
          </widget>
         </item>
         <item>
-         <widget class="QSlider" name="curvatureWeightSlider" >
-          <property name="maximum" >
-           <number>10</number>
-          </property>
-          <property name="pageStep" >
-           <number>2</number>
-          </property>
-          <property name="value" >
-           <number>5</number>
-          </property>
-          <property name="orientation" >
-           <enum>Qt::Horizontal</enum>
-          </property>
-          <property name="tickInterval" >
-           <number>1</number>
-          </property>
-         </widget>
+         <layout class="QHBoxLayout" >
+          <item>
+           <widget class="QSlider" name="curvatureWeightSlider" >
+            <property name="maximum" >
+             <number>10</number>
+            </property>
+            <property name="pageStep" >
+             <number>2</number>
+            </property>
+            <property name="value" >
+             <number>5</number>
+            </property>
+            <property name="orientation" >
+             <enum>Qt::Horizontal</enum>
+            </property>
+            <property name="tickInterval" >
+             <number>1</number>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QSpinBox" name="curvatureWeightSpinBox" >
+            <property name="maximum" >
+             <number>10</number>
+            </property>
+            <property name="value" >
+             <number>5</number>
+            </property>
+           </widget>
+          </item>
+         </layout>
         </item>
        </layout>
       </item>
+     </layout>
+    </widget>
+   </widget>
+   <widget class="QWidget" name="debugTab" >
+    <attribute name="title" >
+     <string>Debug</string>
+    </attribute>
+    <widget class="QWidget" name="" >
+     <property name="geometry" >
+      <rect>
+       <x>10</x>
+       <y>20</y>
+       <width>141</width>
+       <height>54</height>
+      </rect>
+     </property>
+     <layout class="QVBoxLayout" >
       <item>
        <widget class="QPushButton" name="gaussianButton" >
         <property name="text" >
@@ -298,5 +364,102 @@
  <resources>
   <include location="meshlab.qrc" />
  </resources>
- <connections/>
+ <connections>
+  <connection>
+   <sender>penRadiusSlider</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>penRadiusSpinBox</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel" >
+     <x>88</x>
+     <y>120</y>
+    </hint>
+    <hint type="destinationlabel" >
+     <x>116</x>
+     <y>120</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>penRadiusSpinBox</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>penRadiusSlider</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel" >
+     <x>123</x>
+     <y>129</y>
+    </hint>
+    <hint type="destinationlabel" >
+     <x>89</x>
+     <y>130</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>normalWeightSlider</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>normalWeightSpinBox</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel" >
+     <x>77</x>
+     <y>141</y>
+    </hint>
+    <hint type="destinationlabel" >
+     <x>100</x>
+     <y>142</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>normalWeightSpinBox</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>normalWeightSlider</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel" >
+     <x>115</x>
+     <y>151</y>
+    </hint>
+    <hint type="destinationlabel" >
+     <x>79</x>
+     <y>153</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>curvatureWeightSlider</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>curvatureWeightSpinBox</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel" >
+     <x>78</x>
+     <y>191</y>
+    </hint>
+    <hint type="destinationlabel" >
+     <x>104</x>
+     <y>192</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>curvatureWeightSpinBox</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>curvatureWeightSlider</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel" >
+     <x>118</x>
+     <y>201</y>
+    </hint>
+    <hint type="destinationlabel" >
+     <x>79</x>
+     <y>201</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
 </ui>