diff --git a/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderV.xaml b/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderV.xaml
index 61333e7..c1b7940 100644
--- a/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderV.xaml
+++ b/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderV.xaml
@@ -1,10 +1,10 @@
 <UserControl x:Class="MachiningParameterExpanderV"
-   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-   xmlns:sys="clr-namespace:System;assembly=mscorlib"
-   xmlns:Interactivity="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
-   xmlns:EgtCAM5="clr-namespace:EgtCAM5"
-   xmlns:EgtWPFLib5="clr-namespace:EgtWPFLib5;assembly=EgtWPFLib5">
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:sys="clr-namespace:System;assembly=mscorlib"
+             xmlns:Interactivity="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
+             xmlns:EgtCAM5="clr-namespace:EgtCAM5"
+             xmlns:EgtWPFLib5="clr-namespace:EgtWPFLib5;assembly=EgtWPFLib5">
 
    <UserControl.Resources>
       <EgtCAM5:OperationParamVisibilityConverter x:Key="OperationParamVisibilityConverter"/>
@@ -73,26 +73,43 @@
       <sys:Int32 x:Key="OscFlatLen">61</sys:Int32>
       <sys:Int32 x:Key="TabMax">62</sys:Int32>
       <sys:Int32 x:Key="TabMin">63</sys:Int32>
-    </UserControl.Resources>
+   </UserControl.Resources>
 
-    <StackPanel>
-        <ContentControl Content="{Binding Path=ParamExpanderPageV}" />
+   <StackPanel>
+      <ContentControl Content="{Binding Path=ParamExpanderPageV}" />
 
-        <Button Name="ApplyMachBtn" Height="30" Content="{Binding UpdateMachiningBtnMsg}"
-             Command="{Binding UpdateMachiningCommand}" Background="{Binding UpdateMachiningBtn_Background}"/>
-        <Grid>
-            <Grid.ColumnDefinitions>
-                <ColumnDefinition Width="2*"/>
-                <ColumnDefinition Width="1*"/>
-                <ColumnDefinition Width="1*"/>
-            </Grid.ColumnDefinitions>
-            <ToggleButton Name="ViewToolBtn" Grid.Column="0" Height="30" Content="{Binding ViewToolBtnMsg}"
-                IsChecked="{Binding ViewTool}" />
-            <Button Name="NextStepToolBtn" Grid.Column="1" Height="30" Content="{Binding NextStepToolBtnMsg}"
-                Command="{Binding NextStepToolCommand}" IsEnabled="{Binding IsChecked, ElementName=ViewToolBtn}"/>
-            <Button Name="PrevStepToolBtn" Grid.Column="2" Height="30" Content="{Binding PrevStepToolBtnMsg}"
-                Command="{Binding PrevStepToolCommand}" IsEnabled="{Binding IsChecked, ElementName=ViewToolBtn}"/>
-        </Grid>
-    </StackPanel>
+      <Button Name="ApplyMachBtn" Height="30" Content="{Binding UpdateMachiningBtnMsg}"
+              Command="{Binding UpdateMachiningCommand}" Background="{Binding UpdateMachiningBtn_Background}"/>
+      <Grid>
+         <Grid.RowDefinitions>
+            <RowDefinition Height="1*"/>
+            <RowDefinition Height="Auto"/>
+         </Grid.RowDefinitions>
+         <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="2*"/>
+            <ColumnDefinition Width="1*"/>
+            <ColumnDefinition Width="1*"/>
+         </Grid.ColumnDefinitions>
+         <ToggleButton Name="ViewToolBtn" Grid.Column="0" Height="30" Content="{Binding ViewToolBtnMsg}"
+                       IsChecked="{Binding ViewTool}" />
+         <Button Name="PrevStepToolBtn" Grid.Column="1" Height="30" Content="{Binding PrevStepToolBtnMsg}"
+                 Command="{Binding PrevStepToolCommand}" IsEnabled="{Binding IsChecked, ElementName=ViewToolBtn}"/>
+         <Button Name="NextStepToolBtn" Grid.Column="2" Height="30" Content="{Binding NextStepToolBtnMsg}"
+                 Command="{Binding NextStepToolCommand}" IsEnabled="{Binding IsChecked, ElementName=ViewToolBtn}"/>
+
+         <Slider Grid.Row="1" 
+                 Grid.ColumnSpan="3"
+                 Value="{Binding SliderValue}"
+                 SmallChange="1"
+                 TickPlacement="TopLeft"
+                 TickFrequency="5"
+                 Minimum="0"
+                 Maximum="700"
+                 IsSnapToTickEnabled="False"
+                 Width="245"
+                 Margin="0,5,0,0"/>
+
+      </Grid>
+   </StackPanel>
 
 </UserControl>
diff --git a/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderVM.vb b/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderVM.vb
index 84b4946..056cf78 100644
--- a/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderVM.vb
+++ b/OptionPanel/MachiningOptionPanel/OperationExpander/MachiningParameterExpander/MachiningParameterExpanderVM.vb
@@ -69,6 +69,28 @@ Public Class MachiningParameterExpanderVM
       End Set
    End Property
 
+   ' Slider per muovere l'utensile in aggiunta ai pulsanti indietro e avanti
+   Private nId As Integer = 0
+   Private m_SliderValue As Integer
+   Public Property SliderValue As Integer
+      Get
+         Return m_SliderValue
+      End Get
+      Set(value As Integer)
+         If m_bPreviewTool Then
+            If value < m_SliderValue Then
+               nId = EgtPreviewMachiningTool(m_nPtEntId, MCH_PTM.BEFORE)
+            Else
+               nId = EgtPreviewMachiningTool(m_nPtEntId, MCH_PTM.AFTER) + (value - m_SliderValue)
+            End If
+            If nId <> GDB_ID.NULL Then m_nPtEntId = nId
+            EgtDraw()
+         End If
+         m_SliderValue = value
+         NotifyPropertyChanged(NameOf(SliderValue))
+      End Set
+   End Property
+
    Dim WoodDrillParamExpanderV As WoodDrillingParameterExpanderV
    Dim WoodSawParamExpanderV As WoodSawingParameterExpanderV
    Dim WoodMillParamExpanderV As WoodMillingParameterExpanderV
@@ -108,22 +130,6 @@ Public Class MachiningParameterExpanderVM
          EgtGetMachiningParam(MCH_MP.TYPE, nType)
          m_CurrOperation = New MachiningTreeViewItem(sName, DirectCast(nType, MCH_MY))
 
-         'WoodDrillParamExpanderV.DataContext = Nothing
-         'WoodSawParamExpanderV.DataContext = Nothing
-         'WoodMillParamExpanderV.DataContext = Nothing
-         'BeamMillParamExpanderV.DataContext = Nothing
-         'PocketParamExpanderV.DataContext = Nothing
-         'MortiseParamExpanderV.DataContext = Nothing
-         'GenMachinParamExpanderV.DataContext = Nothing
-         'ChiselParamExpanderV.DataContext = Nothing
-         'StoneSawParamExpanderV.DataContext = Nothing
-         'StoneSawFinishParamExpanderV.DataContext = Nothing
-         'StoneSawRoughParamExpanderV.DataContext = Nothing
-         'StoneMillParamExpanderV.DataContext = Nothing
-         'StoneDrillParamExpanderV.DataContext = Nothing
-         'SurfFinishParamExpanderV.DataContext = Nothing
-         'WjParamExpanderV.DataContext = Nothing
-
          m_CurrOperation.ReadOperationParam()
 
          IsModified(False)
@@ -267,23 +273,7 @@ Public Class MachiningParameterExpanderVM
 
    Sub New()
       EgtWPFLib5.MachiningDbWindowVM.m_sMachineIniPath = IniFile.m_sCurrMachIniFilePath
-
-      'WoodDrillParamExpanderV = New WoodDrillingParameterExpanderV
-      'WoodSawParamExpanderV = New WoodSawingParameterExpanderV
-      'WoodMillParamExpanderV = New WoodMillingParameterExpanderV
-      'BeamMillParamExpanderV = New BeamMillingParameterExpanderV
-      'PocketParamExpanderV = New PocketingParameterExpanderV
-      'MortiseParamExpanderV = New MortisingParameterExpanderV
-      'GenMachinParamExpanderV = New GenMachiningParameterExpanderV
-      'ChiselParamExpanderV = New ChiselingParameterExpanderV
-      'StoneSawParamExpanderV = New StoneSawingParameterExpanderV
-      'StoneSawFinishParamExpanderV = New StoneSawFinishingParameterExpanderV
-      'StoneSawRoughParamExpanderV = New StoneSawRoughingParameterExpanderV
-      'StoneMillParamExpanderV = New StoneMillingParameterExpanderV
-      'StoneDrillParamExpanderV = New StoneDrillingParameterExpanderV
-      'SurfFinishParamExpanderV = New SurfFinishingParameterExpanderV
-      'WjParamExpanderV = New WaterjettingParameterExpanderV
-
+      Map.SetRefMachiningParameterExpanderVM(Me)
       NotifyPropertyChanged("ParamExpanderPageV")
    End Sub
 
diff --git a/OptionPanel/MachiningOptionPanel/OperationsListExpander/OperationsListExpanderVM.vb b/OptionPanel/MachiningOptionPanel/OperationsListExpander/OperationsListExpanderVM.vb
index fdb7238..33a2544 100644
--- a/OptionPanel/MachiningOptionPanel/OperationsListExpander/OperationsListExpanderVM.vb
+++ b/OptionPanel/MachiningOptionPanel/OperationsListExpander/OperationsListExpanderVM.vb
@@ -433,6 +433,7 @@ Public Class OperationsListExpanderVM
 
       If EgtGetOperationMode(selOperation.Id) Then
          Map.refOperationParametersExpanderVM.ParametersIsExpanded = True
+         Map.refMachiningParameterExpanderVM.SliderValue = 0
       End If
    End Sub
 
diff --git a/Utility/Map.vb b/Utility/Map.vb
index c100b0e..76b6523 100644
--- a/Utility/Map.vb
+++ b/Utility/Map.vb
@@ -34,6 +34,7 @@ Module Map
    Private m_refWallPanelVM As WallPanelVM
    Private m_refBeamWallPanelVM As BeamWallPanelVM
    Private m_refGunStockPanelVM As GunStockPanelVM
+   Private m_refMachiningParameterExpanderVM As MachiningParameterExpanderVM
 
 #Region "Get"
 
@@ -187,6 +188,11 @@ Module Map
          Return m_refGunStockPanelVM
       End Get
    End Property
+   Public ReadOnly Property refMachiningParameterExpanderVM As MachiningParameterExpanderVM
+      Get
+         Return m_refMachiningParameterExpanderVM
+      End Get
+   End Property
 
 #End Region    ' Get
 
@@ -309,6 +315,10 @@ Module Map
       m_refGunStockPanelVM = GunStockPanelVM
       Return Not IsNothing(m_refGunStockPanelVM)
    End Function
+   Friend Function SetRefMachiningParameterExpanderVM(MachiningParameterExpanderVM As MachiningParameterExpanderVM) As Boolean
+      m_refMachiningParameterExpanderVM = MachiningParameterExpanderVM
+      Return Not IsNothing(m_refMachiningParameterExpanderVM)
+   End Function
 
 #End Region    ' Set
 
@@ -327,7 +337,8 @@ Module Map
              Not IsNothing(m_refOperationParametersExpanderVM) AndAlso Not IsNothing(m_refMachiningTreeExpanderVM) AndAlso
              Not IsNothing(LibMap.refMachGroupPanelVM) AndAlso Not IsNothing(m_refInstrumentPanelVM) AndAlso Not IsNothing(m_refManageLayerExpanderVM) AndAlso
              Not IsNothing(m_refInputExpanderVM) AndAlso Not IsNothing(m_refShowPanelVM) AndAlso Not IsNothing(m_refInfoExpanderVM) AndAlso
-             Not IsNothing(m_refDrawPanelVM) AndAlso Not IsNothing(m_refProjectV) AndAlso Not IsNothing(m_refDoorPanelVM) AndAlso Not IsNothing(m_refSpecialPanelVM)
+             Not IsNothing(m_refDrawPanelVM) AndAlso Not IsNothing(m_refProjectV) AndAlso Not IsNothing(m_refDoorPanelVM) AndAlso Not IsNothing(m_refSpecialPanelVM) AndAlso
+             Not IsNothing(m_refMachiningParameterExpanderVM)
    End Function
 
 #End Region    ' Init