diff --git a/EgtBEAMWALL.ViewerOptimizer/AddSectionXMaterialWnd/AddSectionXMaterialWndVM.vb b/EgtBEAMWALL.ViewerOptimizer/AddSectionXMaterialWnd/AddSectionXMaterialWndVM.vb
index 3d19a6cb..11606395 100644
--- a/EgtBEAMWALL.ViewerOptimizer/AddSectionXMaterialWnd/AddSectionXMaterialWndVM.vb
+++ b/EgtBEAMWALL.ViewerOptimizer/AddSectionXMaterialWnd/AddSectionXMaterialWndVM.vb
@@ -142,7 +142,8 @@ Public Class AddSectionXMaterialWndVM
                If NewSectXMatItem.dW = SectionListItem.dW AndAlso NewSectXMatItem.dH = SectionListItem.dH Then
                   ' Se le sezioni sono uguali allora indago sui materiali
                   For Index As Integer = 0 To SectionListItem.sMaterial.Count - 1
-                     If Not NewSectXMatItem.MaterialForSameSection_List.Contains(SectionListItem.sMaterial(Index)) And Not NewSectXMatItem.sMaterial.Contains(SectionListItem.sMaterial(Index)) Then
+                     If Not NewSectXMatItem.MaterialForSameSection_List.Contains(SectionListItem.sMaterial(Index)) And
+                        Not NewSectXMatItem.sMaterial.Contains(SectionListItem.sMaterial(Index)) Then
                         NewSectXMatItem.MaterialForSameSection_List.Add(SectionListItem.sMaterial(Index))
                      End If
                      If NewSectXMatItem.MaterialForSameSection_List.Count > 0 Then
@@ -154,7 +155,8 @@ Public Class AddSectionXMaterialWndVM
                If NewSectXMatItem.dH = SectionListItem.dH Then
                   ' Se le sezioni sono uguali allora indago sui materiali
                   For Index As Integer = 0 To SectionListItem.sMaterial.Count - 1
-                     If Not NewSectXMatItem.MaterialForSameSection_List.Contains(SectionListItem.sMaterial(Index)) And Not NewSectXMatItem.sMaterial.Contains(SectionListItem.sMaterial(Index)) Then
+                     If Not NewSectXMatItem.MaterialForSameSection_List.Contains(SectionListItem.sMaterial(Index)) And
+                        Not NewSectXMatItem.sMaterial.Contains(SectionListItem.sMaterial(Index)) Then
                         NewSectXMatItem.MaterialForSameSection_List.Add(SectionListItem.sMaterial(Index))
                      End If
                      If NewSectXMatItem.MaterialForSameSection_List.Count > 0 Then
diff --git a/EgtBEAMWALL.ViewerOptimizer/NestingRunningWnd/NestingRunningWndV.xaml b/EgtBEAMWALL.ViewerOptimizer/NestingRunningWnd/NestingRunningWndV.xaml
index 24457672..4eddb30b 100644
--- a/EgtBEAMWALL.ViewerOptimizer/NestingRunningWnd/NestingRunningWndV.xaml
+++ b/EgtBEAMWALL.ViewerOptimizer/NestingRunningWnd/NestingRunningWndV.xaml
@@ -9,6 +9,11 @@
 
    <Grid>
       <Grid.RowDefinitions>
+         <RowDefinition Height="1*"/>
+         <RowDefinition Height="Auto"/>
+         <RowDefinition Height="Auto"/>
+         <RowDefinition Height="1*"/>
+         <RowDefinition Height="Auto"/>
          <RowDefinition Height="1*"/>
          <RowDefinition Height="Auto"/>
          <RowDefinition Height="1*"/>
@@ -18,15 +23,27 @@
          <RowDefinition Height="1*"/>
       </Grid.RowDefinitions>
       <TextBlock Grid.Row="1"
-                 Text="{Binding NestingRunning_Msg}"
+                 Text="{Binding Section_Msg}"
                  TextAlignment="Center"/>
-      <ProgressBar Grid.Row="3"
+      <TextBlock Grid.Row="2"
+                 Text="{Binding Nesting_Msg}"
+                 TextAlignment="Center"/>
+      <ProgressBar Grid.Row="4"
                    Minimum="0"
                    Maximum="100"
-                   Value="{Binding Progress_Value}"
+                   Value="{Binding CurrProgress_Value}"
                    Height="20"
                    Margin="40,0,40,0"/>
-      <Button Grid.Row="5" Content="Cancel"
+      <ProgressBar Grid.Row="6"
+                   Minimum="0"
+                   Maximum="100"
+                   Value="{Binding TotProgress_Value}"
+                   Height="20"
+                   Margin="40,0,40,0"/>
+      <TextBlock Grid.Row="8"
+                 Text="{Binding TotProgress_Msg}"
+                 TextAlignment="Center"/>
+      <Button Grid.Row="10" Content="Cancel"
               IsDefault="False"
               IsCancel="True"
               Width="70"
diff --git a/EgtBEAMWALL.ViewerOptimizer/NestingRunningWnd/NestingRunningWndVM.vb b/EgtBEAMWALL.ViewerOptimizer/NestingRunningWnd/NestingRunningWndVM.vb
index 230c3cb6..e722bd4c 100644
--- a/EgtBEAMWALL.ViewerOptimizer/NestingRunningWnd/NestingRunningWndVM.vb
+++ b/EgtBEAMWALL.ViewerOptimizer/NestingRunningWnd/NestingRunningWndVM.vb
@@ -12,23 +12,71 @@ Public Class NestingRunningWndVM
    Private m_Waiting_Timer As New DispatcherTimer
    Private m_TotIntervals As Integer = 0
    Private m_Step As Double = 1
-   Private m_Progress_Value As Double = 0
-   Private m_SectionList As List(Of SParam)
+   Private m_SectionIndex As Integer
 
-   Public Property Progress_Value As Double
+   Private m_SectionProgressList As New List(Of SectionProgress)
+   Friend ReadOnly Property SectionProgressList As List(Of SectionProgress)
       Get
-         Return m_Progress_Value
+         Return m_SectionProgressList
+      End Get
+   End Property
+
+   Public ReadOnly Property RunningSection As SectionProgress
+      Get
+         Dim CurrRunningSection As SectionProgress = m_SectionProgressList.FirstOrDefault(Function(x) x.nState <> SectionProgress.NestStates.DONE)
+         Return If(Not IsNothing(CurrRunningSection), CurrRunningSection, Nothing)
+      End Get
+   End Property
+
+   Private m_CurrProgress_Value As Double = 0
+   Public Property CurrProgress_Value As Double
+      Get
+         Return m_CurrProgress_Value
       End Get
       Set(value As Double)
-         m_Progress_Value = value
+         m_CurrProgress_Value = value
       End Set
    End Property
 
+   Private m_TotProgress_Value As Double = 0
+   Public Property TotProgress_Value As Double
+      Get
+         Return Math.Floor(m_TotProgress_Value)
+      End Get
+      Set(value As Double)
+         m_TotProgress_Value = value
+      End Set
+   End Property
+
+   ' tempo parziale e totale del segmento corrente
+   Friend Shared m_CurrState As SectionProgress.NestStates
+   Friend Shared m_CurrTime As Double
+   Friend Shared m_TotTime As Double
+
 #Region "Messages"
 
-   Public ReadOnly Property NestingRunning_Msg As String
+   Public ReadOnly Property Section_Msg As String
       Get
-         Return "Nesting running..."
+         Return "Section: " & m_SectionProgressList(m_SectionIndex).Section.sSectionXMaterial & "(" & m_SectionIndex + 1 & "/" & m_SectionProgressList.Count() & ")"
+      End Get
+   End Property
+
+   Public ReadOnly Property Nesting_Msg As String
+      Get
+         Select Case m_CurrState
+            Case SectionProgress.NestStates.ADDPART
+               Return "Calculating wall orientation..."
+            Case SectionProgress.NestStates.NEST
+               Return "Nesting walls in rawparts..."
+            Case SectionProgress.NestStates.CALCRAWPART
+               Return "Genereting rawparts with nested parts..."
+         End Select
+      End Get
+   End Property
+
+   Public ReadOnly Property TotProgress_Msg As String
+      Get
+         Return m_TotProgress_Value.ToString("0.#") & "%"
       End Get
    End Property
 
@@ -39,19 +87,58 @@ Public Class NestingRunningWndVM
 
 #End Region    ' FIELDS & PROPERTIES
 
-   Sub New(SectionList As List(Of SParam), TimeToWait As Double)
-      m_SectionList = SectionList
-      m_TotIntervals = Math.Ceiling(TimeToWait)
-      m_Step = 100 / m_TotIntervals
-      ' avvio contatore
-      m_Waiting_Timer.Interval = TimeSpan.FromMilliseconds(1000)
+   Sub New(SelPartType As Integer)
+      Dim sLogPath As String = Map.refMainWindowVM.MainWindowM.sTempDir & "\RawPartLog.txt"
+      Dim dSectionTime As Double = GetMainPrivateProfileDouble(S_NEST, K_SECTIONTIME, 1)
+      Dim dPartTime As Double = GetMainPrivateProfileDouble(S_NEST, K_PARTTIME, 1)
+      SectionProgress.SetPartSectionTimes(dPartTime, dSectionTime)
+      ' disabilito interfaccia
+      Map.refProjectVM.SetCalcRunning(True)
+      ' se ho selezionato nest per materiale e c'è una sezione selezionata diversa da sezione nulla
+      If SelPartType = OptimizePanelVM.PartType.MATERIAL AndAlso Not IsNothing(Map.refProjectVM.BTLStructureVM.SelSection) AndAlso Map.refProjectVM.BTLStructureVM.SelSection.dH <> -1 Then
+         m_SectionProgressList.Add(New SectionProgress(Map.refProjectVM.BTLStructureVM.SelSection))
+      Else
+         ' altrimenti prendo tutte le sezioni
+         For Each CurrSection In Map.refProjectVM.BTLStructureVM.SectionList
+            If CurrSection.dH = -1 Then Continue For
+            m_SectionProgressList.Add(New SectionProgress(CurrSection))
+         Next
+      End If
+      ' imposto contatore
+      m_Waiting_Timer.Interval = TimeSpan.FromMilliseconds(700)
       AddHandler m_Waiting_Timer.Tick, AddressOf WaitingTimer_Tick
-      m_Waiting_Timer.Start()
    End Sub
 
    Private Sub WaitingTimer_Tick()
-      m_Progress_Value += m_Step
-      NotifyPropertyChanged(NameOf(Progress_Value))
+      Dim CurrTime As Double = 0
+      Dim CurrTotTime As Double = 0
+      Dim TotalTime As Double = 0
+      For Index = 0 To m_SectionProgressList.Count - 1
+         Dim SectionProgress As SectionProgress = m_SectionProgressList(Index)
+         If Index < m_SectionIndex Then
+            CurrTime += SectionProgress.dTotSectionTime
+         ElseIf Index = m_SectionIndex Then
+            Select Case m_CurrState
+               Case SectionProgress.NestStates.ADDPART
+                  CurrTotTime = 100
+                  CurrTime += m_CurrTime * SectionProgress.dAddPartTime / 100
+               Case SectionProgress.NestStates.NEST
+                  CurrTotTime = 100
+                  CurrTime += SectionProgress.dAddPartTime + m_CurrTime * SectionProgress.dCalcNestTime / 100
+               Case SectionProgress.NestStates.CALCRAWPART
+                  CurrTotTime = 100
+                  CurrTime += SectionProgress.dAddPartTime + SectionProgress.dCalcNestTime + m_CurrTime * SectionProgress.dCalcRawPartTime / 100
+            End Select
+         End If
+         TotalTime += SectionProgress.dTotSectionTime
+      Next
+      m_TotProgress_Value = CurrTime / TotalTime * 100
+      m_CurrProgress_Value = m_CurrTime
+      NotifyPropertyChanged(NameOf(CurrProgress_Value))
+      NotifyPropertyChanged(NameOf(TotProgress_Value))
+      NotifyPropertyChanged(NameOf(Section_Msg))
+      NotifyPropertyChanged(NameOf(Nesting_Msg))
+      NotifyPropertyChanged(NameOf(TotProgress_Msg))
    End Sub
 
    Friend Sub DoNesting()
@@ -75,9 +162,8 @@ Public Class NestingRunningWndVM
                ' leggo start offset e quantity
                dStartOffset = WarehouseHelper.GetStartOffset()
                ' riporto la stessa lunghezza in tutte le sezioni
-               For Each Section In m_SectionList
-                  Section.dL = dRawL
-                  Section.nQuantity = nQuantity
+               For Each SectionProgress In m_SectionProgressList
+                  SectionProgress.SParamList.Add(New SParam(SectionProgress.Section, dRawL, nQuantity))
                Next
             ElseIf Map.refProjectVM.BTLStructureVM.nPROJTYPE = MachineType.WALL Then
                If Not WarehouseHelper.GetCurrentDimensions(Map.refProjectVM.BTLStructureVM.nPROJTYPE, dRawW, dRawL) Then
@@ -89,10 +175,8 @@ Public Class NestingRunningWndVM
                ' leggo kerf e quantity
                dKerf = WarehouseHelper.GetKerf()
                ' riporto le stesse dimensioni in tutte le sezioni
-               For Each Section In m_SectionList
-                  Section.dL = dRawL
-                  Section.dW = dRawW
-                  Section.nQuantity = nQuantity
+               For Each SectionProgress In m_SectionProgressList
+                  SectionProgress.SParamList.Add(New SParam(SectionProgress.Section, dRawW, dRawL, nQuantity))
                Next
             End If
          Case WarehouseType.MEDIUM
@@ -103,10 +187,10 @@ Public Class NestingRunningWndVM
                ' leggo start offset 
                dStartOffset = WarehouseHelper.GetStartOffset()
                ' leggo lunghezza barra e quantity
-               WarehouseHelper.GetDimensionsAndQuantityForList(Map.refProjectVM.BTLStructureVM.nPROJTYPE, m_SectionList)
+               WarehouseHelper.GetDimensionsAndQuantityForList(Map.refProjectVM.BTLStructureVM.nPROJTYPE, m_SectionProgressList)
             ElseIf Map.refProjectVM.BTLStructureVM.nPROJTYPE = MachineType.WALL Then
                dKerf = WarehouseHelper.GetKerf()
-               If Not WarehouseHelper.GetDimensionsAndQuantityForList(Map.refProjectVM.BTLStructureVM.nPROJTYPE, m_SectionList) Then
+               If Not WarehouseHelper.GetDimensionsAndQuantityForList(Map.refProjectVM.BTLStructureVM.nPROJTYPE, m_SectionProgressList) Then
                   ' riabilito interfaccia
                   Map.refProjectVM.SetCalcRunning(False)
                   CloseNesting()
@@ -114,34 +198,47 @@ Public Class NestingRunningWndVM
                End If
             End If
       End Select
-      ' attivo loading progress
-      Map.refMyStatusBarVM.StartLoading("Nesting started", True)
-      Dim DimensionsList As New List(Of List(Of SParam))
-      ' le raggruppo per sezione
-      For Each Section In m_SectionList
-         Dim Dimension As List(Of SParam) = DimensionsList.FirstOrDefault(Function(x) x(0).SectXMat = Section.SectXMat)
-         If Not IsNothing(Dimension) Then
-            Dimension.Add(Section)
-         Else
-            DimensionsList.Add(New List(Of SParam)({Section}))
-         End If
-      Next
+      '' attivo loading progress
+      'Map.refMyStatusBarVM.StartLoading("Nesting started", True)
+      'Dim DimensionsList As New List(Of List(Of SParam))
+      '' le raggruppo per sezione
+      'For Each Section In m_SectionProgressList
+      '   Dim Dimension As List(Of SParam) = DimensionsList.FirstOrDefault(Function(x) x(0).SectXMat = Section.SParam.SectXMat)
+      '   If Not IsNothing(Dimension) Then
+      '      Dimension.Add(Section)
+      '   Else
+      '      DimensionsList.Add(New List(Of SParam)({Section}))
+      '   End If
+      'Next
       ' per ogni gruppo di sezioni
-      For Each Dimension In DimensionsList
+      'For Each Dimension In DimensionsList
+      ' calcolo lista dei pezzi per ogni sezione
+      For Each SectionProgress In m_SectionProgressList
          'Dim SectionPartList As New List(Of BTLPartM)(Map.refProjectVM.BTLStructureVM.BTLPartVMList.Where(Function(x) x.Section = Section.SectXMat).ToList())
          Dim SectionPartList As List(Of BTLPartM) = (From x In Map.refProjectVM.BTLStructureVM.BTLPartVMList
-                                                     Where x.Section = Dimension(0).SectXMat AndAlso x.bDO
+                                                     Where x.Section = SectionProgress.Section AndAlso x.bDO
                                                      Select x.BTLPartM).ToList()
-         Dim nNestTime As Integer = Math.Max(5, dSectionTime) + (dPartTime * SectionPartList.Count)
+         SectionProgress.SetSectionPartList(SectionPartList)
+      Next
+      ' avvio timer avanzamento nesting
+      m_CurrState = SectionProgress.NestStates.NULL
+      m_TotTime = 0
+      m_CurrTime = 0
+      m_Waiting_Timer.Start()
+      ' calcolo nesting
+      For m_SectionIndex = 0 To m_SectionProgressList.Count - 1
+         Dim SectionProgress As SectionProgress = m_SectionProgressList(m_SectionIndex)
          ' passo a lua lista id pezzi da nestare
-         If Not ExecNesting(sLogPath, CurrentMachine.sMachineName, SectionPartList, Dimension, dStartOffset, dOffset, dKerf, nNestTime) Then
+         If SectionProgress.SectionPartList.Count > 0 AndAlso SectionProgress.SParamList.Count > 0 AndAlso
+            Not ExecNesting(sLogPath, CurrentMachine.sMachineName, SectionProgress.SectionPartList, SectionProgress.SParamList, dStartOffset, dOffset, dKerf, SectionProgress.dCalcNestTime) Then
             Exit For
          End If
       Next
+
       ' update liste grezzi e pezzi della grafica
       Map.refProjectVM.MachGroupPanelVM.RefreshMachGroupList()
-      ' disattivo loading progress
-      Map.refMyStatusBarVM.EndLoading("Nesting completed")
+      '' disattivo loading progress
+      'Map.refMyStatusBarVM.EndLoading("Nesting completed")
       ' seleziono ultimo gruppo
       Map.refProjectVM.MachGroupPanelVM.SelLastMachGroup()
       ' riabilito interfaccia
@@ -179,7 +276,7 @@ Public Class NestingRunningWndVM
       ' chiedo conferma
       If MessageBox.Show("Are you sure you want to stop the nesting?", "Warning", MessageBoxButton.YesNo, MessageBoxImage.Warning) = MessageBoxResult.No Then Return
       ' fermo il nesting
-      Map.refMyStatusBarVM.StopProgress()
+      Map.refOptimizePanelVM.m_StopNesting = True
       '' fermo timer e chiudo finestra
       'CloseNesting()
    End Sub
@@ -189,3 +286,89 @@ Public Class NestingRunningWndVM
 #End Region    ' COMMANDS
 
 End Class
+
+Public Class SectionProgress
+
+   Public Enum NestStates As Integer
+      NULL = 0
+      START = 1
+      ADDRAWPART = -1
+      ADDPART = -2
+      NEST = 4
+      CALCRAWPART = -3
+      DONE = -4
+   End Enum
+
+   Private Shared m_dSectionTime As Double
+   Private Shared m_dPartTime As Double
+
+   Private m_Section As SectionXMaterial
+   Public ReadOnly Property Section As SectionXMaterial
+      Get
+         Return m_Section
+      End Get
+   End Property
+
+   Private m_SParamList As New List(Of SParam)
+   Public ReadOnly Property SParamList As List(Of SParam)
+      Get
+         Return m_SParamList
+      End Get
+   End Property
+
+   Private m_SectionPartList As New List(Of BTLPartM)
+   Public ReadOnly Property SectionPartList As List(Of BTLPartM)
+      Get
+         Return m_SectionPartList
+      End Get
+   End Property
+
+   Private m_nState As NestStates = 0
+   Public ReadOnly Property nState As NestStates
+      Get
+         Return m_nState
+      End Get
+   End Property
+   Public Sub SetState(value As NestStates)
+      m_nState = value
+   End Sub
+
+   Public ReadOnly Property dTotSectionTime As Double
+      Get
+         Return If(SectionPartList.Count > 0 AndAlso SParamList.Count > 0, dAddPartTime + dCalcNestTime + dCalcRawPartTime, 0)
+      End Get
+   End Property
+
+   Public ReadOnly Property dAddPartTime As Double
+      Get
+         Return If(SectionPartList.Count > 0 AndAlso SParamList.Count > 0, Math.Max(SectionPartList.Count / 5, 2), 0)
+      End Get
+   End Property
+
+   Public ReadOnly Property dCalcNestTime As Double
+      Get
+         Return If(SectionPartList.Count > 0 AndAlso SParamList.Count > 0, Math.Max(5, m_dSectionTime) + (m_dPartTime * SectionPartList.Count), 0)
+
+      End Get
+   End Property
+
+   Public ReadOnly Property dCalcRawPartTime As Double
+      Get
+         Return If(SectionPartList.Count > 0 AndAlso SParamList.Count > 0, Math.Max(SectionPartList.Count / 20, 2), 0)
+      End Get
+   End Property
+
+   Sub New(Section As SectionXMaterial)
+      m_Section = Section
+   End Sub
+
+   Friend Shared Sub SetPartSectionTimes(PartTime As Double, SectionTime As Double)
+      m_dPartTime = PartTime
+      m_dSectionTime = SectionTime
+   End Sub
+
+   Friend Sub SetSectionPartList(SectionPartList As List(Of BTLPartM))
+      m_SectionPartList = SectionPartList
+   End Sub
+
+End Class
\ No newline at end of file
diff --git a/EgtBEAMWALL.ViewerOptimizer/OptimizePanel/OptimizePanelVM.vb b/EgtBEAMWALL.ViewerOptimizer/OptimizePanel/OptimizePanelVM.vb
index f2bcf52b..e0bdca1f 100644
--- a/EgtBEAMWALL.ViewerOptimizer/OptimizePanel/OptimizePanelVM.vb
+++ b/EgtBEAMWALL.ViewerOptimizer/OptimizePanel/OptimizePanelVM.vb
@@ -1,4 +1,5 @@
 Imports System.Collections.ObjectModel
+Imports System.Threading
 Imports EgtBEAMWALL.Core
 Imports EgtUILib
 Imports EgtWPFLib5
@@ -8,7 +9,10 @@ Public Class OptimizePanelVM
 
 #Region "FIELDS & PROPERTIES"
 
-   Friend Enum PartType As Integer
+   Friend m_bNestingRunning As Boolean = False
+   Friend m_StopNesting As Boolean = False
+
+   Public Enum PartType As Integer
       MATERIAL = 0
       ALL = 1
    End Enum
@@ -102,6 +106,30 @@ Public Class OptimizePanelVM
       NotifyPropertyChanged(NameOf(OptimizePanel_IsEnabled))
    End Sub
 
+   Friend Function ProcessEvents(ByVal nProg As Integer, ByVal nPause As Integer) As Integer
+      If nProg > 0 And nProg <= 100 Then
+         NestingRunningWndVM.m_CurrState = SectionProgress.NestStates.NEST
+         NestingRunningWndVM.m_CurrTime = nProg
+      ElseIf nProg > 100 And nProg <= 200 Then
+         NestingRunningWndVM.m_CurrState = SectionProgress.NestStates.ADDPART
+         NestingRunningWndVM.m_CurrTime = nProg - 100
+      ElseIf nProg > 200 And nProg <= 300 Then
+         NestingRunningWndVM.m_CurrState = SectionProgress.NestStates.CALCRAWPART
+         NestingRunningWndVM.m_CurrTime = nProg - 200
+      End If
+      ' Costringo ad aggiornare
+      UpdateUI()
+      ' Eventuale attesa
+      Thread.Sleep(nPause)
+      ' Ritorno eventuale stop
+      If m_StopNesting Then
+         m_StopNesting = False
+         Return 1
+      Else
+         Return 0
+      End If
+   End Function
+
 #End Region    ' METHODS
 
 #Region "COMMANDS"
@@ -126,118 +154,27 @@ Public Class OptimizePanelVM
    Friend Sub Optimize()
       If IsNothing(m_SelPartType) OrElse IsNothing(m_SelOriginType) Then Return
       If IsNothing(Map.refProjectVM.BTLStructureVM) OrElse IsNothing(Map.refProjectVM.BTLStructureVM.BTLPartVMList) OrElse Map.refProjectVM.BTLStructureVM.BTLPartVMList.Count = 0 Then Return
-      Dim sLogPath As String = Map.refMainWindowVM.MainWindowM.sTempDir & "\RawPartLog.txt"
-      Dim dSectionTime As Double = GetMainPrivateProfileDouble(S_NEST, K_SECTIONTIME, 1)
-      Dim dPartTime As Double = GetMainPrivateProfileDouble(S_NEST, K_PARTTIME, 1)
-      Dim dTotSectionTime As Double = 0
-      Dim dTotPartTime As Double = 0
-      Dim SectionList As New List(Of SParam)
-      ' disabilito interfaccia
-      Map.refProjectVM.SetCalcRunning(True)
-      ' se ho selezionato nest per materiale e c'è una sezione selezionata diversa da sezione nulla
-      If m_SelPartType.Id = PartType.MATERIAL AndAlso Not IsNothing(Map.refProjectVM.BTLStructureVM.SelSection) AndAlso Map.refProjectVM.BTLStructureVM.SelSection.dH <> -1 Then
-         SectionList.Add(New SParam(Map.refProjectVM.BTLStructureVM.SelSection, 0, 0))
-         dTotSectionTime = dSectionTime
-         dTotPartTime = dPartTime * Map.refProjectVM.BTLStructureVM.BTLPartVMList.Sum(Function(x) If(x.bDO AndAlso x.Section = SectionList(0).SectXMat, 1, 0))
-      Else
-         ' altrimenti prendo tutte le sezioni
-         For Each CurrSection In Map.refProjectVM.BTLStructureVM.SectionList
-            If CurrSection.dH = -1 Then Continue For
-            SectionList.Add(New SParam(CurrSection, 0, 0))
-            dTotSectionTime += dSectionTime
-         Next
-         dTotPartTime = dPartTime * Map.refProjectVM.BTLStructureVM.BTLPartVMList.Sum(Function(x) If(x.bDO AndAlso SectionList.Any(Function(y) y.SectXMat = x.Section), 1, 0))
-      End If
       ' apro finestra di attesa nesting
-      Dim NestingRunninWndVM As New NestingRunningWndVM(SectionList, dTotSectionTime + dTotPartTime)
-      Dim NestingRunningWnd As New NestingRunningWndV(Application.Current.MainWindow, NestingRunninWndVM)
+      m_bNestingRunning = True
+      Dim NestingRunningWndVM As New NestingRunningWndVM(m_SelPartType.Id)
+      Dim NestingRunningWnd As New NestingRunningWndV(Application.Current.MainWindow, NestingRunningWndVM)
       NestingRunningWnd.ShowDialog()
-      '' recupero parametri di calcolo
-      'Dim dRawL As Double = 0
-      'Dim dRawW As Double = 0
-      'Dim WhType = GetMainPrivateProfileInt(S_GENERAL, K_WAREHOUSE, 1)
-      'Dim sWarehouseIniPath As String = ""
-      'Dim dOffset As Double = WarehouseHelper.GetOffset(Map.refProjectVM.BTLStructureVM.nPROJTYPE)
-      'Dim dStartOffset As Double = 0
-      'Dim dKerf As Double = 0
-      'Select Case WhType
-      '   Case WarehouseType.BASIC
-      '      Dim nQuantity As Integer = WarehouseHelper.GetQuantity(Map.refProjectVM.BTLStructureVM.nPROJTYPE)
-      '      If Map.refProjectVM.BTLStructureVM.nPROJTYPE = MachineType.BEAM Then
-      '         ' leggo lunghezza barra
-      '         WarehouseHelper.GetCurrentDimensions(Map.refProjectVM.BTLStructureVM.nPROJTYPE, 0, dRawL)
-      '         ' leggo start offset e quantity
-      '         dStartOffset = WarehouseHelper.GetStartOffset()
-      '         ' riporto la stessa lunghezza in tutte le sezioni
-      '         For Each Section In SectionList
-      '            Section.dL = dRawL
-      '            Section.nQuantity = nQuantity
-      '         Next
-      '      ElseIf Map.refProjectVM.BTLStructureVM.nPROJTYPE = MachineType.WALL Then
-      '         If Not WarehouseHelper.GetCurrentDimensions(Map.refProjectVM.BTLStructureVM.nPROJTYPE, dRawW, dRawL) Then
-      '            ' riabilito interfaccia
-      '            Map.refProjectVM.SetCalcRunning(False)
-      '            Return
-      '         End If
-      '         ' leggo kerf e quantity
-      '         dKerf = WarehouseHelper.GetKerf()
-      '         ' riporto le stesse dimensioni in tutte le sezioni
-      '         For Each Section In SectionList
-      '            Section.dL = dRawL
-      '            Section.dW = dRawW
-      '            Section.nQuantity = nQuantity
-      '         Next
-      '      End If
-      '   Case WarehouseType.MEDIUM
-      '      Dim sCurrL As String
-      '      Dim nIndex As Integer = 1
-      '      ' aggiungo le sezioni con diverse lunghezze in base al warehouse
-      '      If Map.refProjectVM.BTLStructureVM.nPROJTYPE = MachineType.BEAM Then
-      '         ' leggo start offset 
-      '         dStartOffset = WarehouseHelper.GetStartOffset()
-      '         ' leggo lunghezza barra e quantity
-      '         WarehouseHelper.GetDimensionsAndQuantityForList(Map.refProjectVM.BTLStructureVM.nPROJTYPE, SectionList)
-      '      ElseIf Map.refProjectVM.BTLStructureVM.nPROJTYPE = MachineType.WALL Then
-      '         dKerf = WarehouseHelper.GetKerf()
-      '         If Not WarehouseHelper.GetDimensionsAndQuantityForList(Map.refProjectVM.BTLStructureVM.nPROJTYPE, SectionList) Then
-      '            ' riabilito interfaccia
-      '            Map.refProjectVM.SetCalcRunning(False)
-      '            Return
-      '         End If
-      '      End If
-      'End Select
-      '' attivo loading progress
-      'Map.refMyStatusBarVM.StartLoading("Nesting started", True)
-      'Dim DimensionsList As New List(Of List(Of SParam))
-      '' le raggruppo per sezione
-      'For Each Section In SectionList
-      '   Dim Dimension As List(Of SParam) = DimensionsList.FirstOrDefault(Function(x) x(0).SectXMat = Section.SectXMat)
-      '   If Not IsNothing(Dimension) Then
-      '      Dimension.Add(Section)
-      '   Else
-      '      DimensionsList.Add(New List(Of SParam)({Section}))
-      '   End If
-      'Next
-      '' per ogni gruppo di sezioni
-      'For Each Dimension In DimensionsList
-      '   'Dim SectionPartList As New List(Of BTLPartM)(Map.refProjectVM.BTLStructureVM.BTLPartVMList.Where(Function(x) x.Section = Section.SectXMat).ToList())
-      '   Dim SectionPartList As List(Of BTLPartM) = (From x In Map.refProjectVM.BTLStructureVM.BTLPartVMList
-      '                                               Where x.Section = Dimension(0).SectXMat AndAlso x.bDO
-      '                                               Select x.BTLPartM).ToList()
-      '   Dim nNestTime As Integer = Math.Max(5, dSectionTime) + (dPartTime * SectionPartList.Count)
-      '   ' passo a lua lista id pezzi da nestare
-      '   ExecNesting(sLogPath, CurrentMachine.sMachineName, SectionPartList, Dimension, dStartOffset, dOffset, dKerf, nNestTime)
-      'Next
-      '' update liste grezzi e pezzi della grafica
-      'Map.refProjectVM.MachGroupPanelVM.RefreshMachGroupList()
-      '' disattivo loading progress
-      'Map.refMyStatusBarVM.EndLoading("Nesting completed")
-      '' seleziono ultimo gruppo
-      'Map.refProjectVM.MachGroupPanelVM.SelLastMachGroup()
-      '' riabilito interfaccia
-      'Map.refProjectVM.SetCalcRunning(False)
-      '' chiudo finestra di attesa nesting
-      'NestingRunninWndVM.Cancel()
+      m_bNestingRunning = False
+      ' mostro risultati
+      Dim sResult As String = ""
+      For Each Section In NestingRunningWndVM.SectionProgressList
+         If Section.SParamList.Count = 0 Then
+            sResult &= Section.Section.sSectionXMaterial & ": no raw part found in the warehouse!" & Environment.NewLine
+         End If
+         For Each Part In Section.SectionPartList
+            If Part.nINPROD <> Part.nCNT + Part.nADDED Then
+               sResult &= Section.Section.sSectionXMaterial & " - " & Part.nPDN & ": partially nested!" & "(" & Part.nINPROD & "/" & Part.nCNT + Part.nADDED & ")" & Environment.NewLine
+            End If
+         Next
+      Next
+      If Not IsNothing(sResult) Then
+         MessageBox.Show(sResult, "", MessageBoxButton.OK, MessageBoxImage.Information)
+      End If
    End Sub
 
 #End Region ' Optimize
diff --git a/EgtBEAMWALL.ViewerOptimizer/StatusBar/MyStatusBarVM.vb b/EgtBEAMWALL.ViewerOptimizer/StatusBar/MyStatusBarVM.vb
index ba2970ba..7970c6d4 100644
--- a/EgtBEAMWALL.ViewerOptimizer/StatusBar/MyStatusBarVM.vb
+++ b/EgtBEAMWALL.ViewerOptimizer/StatusBar/MyStatusBarVM.vb
@@ -48,6 +48,11 @@ Public Class MyStatusBarVM
    End Function
 
    Private Function ProcessEvents(ByVal nProg As Integer, ByVal nPause As Integer) As Integer
+      ' se nesting in corso
+      If Map.refOptimizePanelVM.m_bNestingRunning Then
+         ' gestisco nel nesting
+         Return Map.refOptimizePanelVM.ProcessEvents(nProg, nPause)
+      End If
       ' Se previsto, imposto progress
       If nProg > 0 Then SetLoadingProgress(Math.Min(nProg, 100))
       ' Costringo ad aggiornare
diff --git a/EgtBEAMWALL.ViewerOptimizer/WarehouseWnd/WarehouseHelper.vb b/EgtBEAMWALL.ViewerOptimizer/WarehouseWnd/WarehouseHelper.vb
index 096ceeaf..a78494cd 100644
--- a/EgtBEAMWALL.ViewerOptimizer/WarehouseWnd/WarehouseHelper.vb
+++ b/EgtBEAMWALL.ViewerOptimizer/WarehouseWnd/WarehouseHelper.vb
@@ -111,43 +111,39 @@ Module WarehouseHelper
 
 
    ' funzione che restituisce la quantita' di grezzi per sezione
-   Public Function GetDimensionsAndQuantityForList(Type As BWType, ByRef SectionList As List(Of SParam)) As Boolean
+   Public Function GetDimensionsAndQuantityForList(Type As BWType, ByRef SectionList As List(Of SectionProgress)) As Boolean
       Dim nIndex As Integer = 1
       Dim sSection As String = ""
-      Dim CheckList As New List(Of Integer)
-      Dim NewSectionList As New List(Of SParam)
       While GenInterface.GetPrivateProfileString(If(Type = BWType.BEAM, WRH_BEAM, WRH_WALL), If(Type = BWType.BEAM, WRH_L, WRH_S) & nIndex, "", sSection, GetWarehouseIniPath()) > 0
-         If String.IsNullOrWhiteSpace(sSection) Then Return False
+         If String.IsNullOrWhiteSpace(sSection) Then Continue While
          Dim sSectionValues() As String = sSection.Split(","c)
+         Dim dW As Double = 0
+         Dim dL As Double = 0
+         Dim nQty As Integer = 0
          Select Case Type
             Case BWType.BEAM
-               For Each Section In SectionList
-                  If Section.SectXMat.dW = sSectionValues(0) AndAlso Section.SectXMat.dH = sSectionValues(1) AndAlso Section.SectXMat.MaterialForSameSection_List(0) = sSectionValues(2) Then
-                     If Not StringToDouble(sSectionValues(3), Section.dL) Then Return False
-                     If Not Integer.TryParse(sSectionValues(4), Section.nQuantity) Then Return False
-                     CheckList.Add(SectionList.IndexOf(Section))
+               For Each SectionProgress In SectionList
+                  If SectionProgress.Section.dW = sSectionValues(0) AndAlso SectionProgress.Section.dH = sSectionValues(1) AndAlso SectionProgress.Section.MaterialForSameSection_List(0) = sSectionValues(2) Then
+                     If Not StringToDouble(sSectionValues(3), dL) Then Continue While
+                     If Not Integer.TryParse(sSectionValues(4), nQty) Then Continue While
+                     SectionProgress.SParamList.Add(New SParam(SectionProgress.Section, dL, nQty))
                   End If
                Next
             Case BWType.WALL
-               For Each Section In SectionList
-                  Dim sSectionData As String = ""
-                  GetPrivateProfileString(If(Type = BWType.BEAM, S_BEAM_LIST, S_WALL_LIST), sSectionValues(0), "", sSectionData, GetWarehouseIniPath())
-                  Dim SectionData() As String = sSectionData.Split(","c)
-                  If Section.SectXMat.dH = SectionData(0) AndAlso Section.SectXMat.sMaterial.Contains(SectionData(1)) Then
-                     Dim dW As Double = 0
-                     Dim dL As Double = 0
-                     Dim nQty As Integer = 0
-                     If Not StringToDouble(sSectionValues(1), dW) Then Return False
-                     If Not StringToDouble(sSectionValues(2), dL) Then Return False
-                     If Not Integer.TryParse(sSectionValues(3), nQty) Then Return False
-                     NewSectionList.Add(New SParam(Section.SectXMat, dW, dL, nQty))
-                     CheckList.Add(SectionList.IndexOf(Section))
+               Dim sSectionData As String = ""
+               GetPrivateProfileString(If(Type = BWType.BEAM, S_BEAM_LIST, S_WALL_LIST), sSectionValues(0), "", sSectionData, GetWarehouseIniPath())
+               Dim SectionData() As String = sSectionData.Split(","c)
+               For Each SectionProgress In SectionList
+                  If SectionProgress.Section.dH = SectionData(0) AndAlso SectionProgress.Section.sMaterial.Contains(SectionData(1)) Then
+                     If Not StringToDouble(sSectionValues(1), dW) Then Continue While
+                     If Not StringToDouble(sSectionValues(2), dL) Then Continue While
+                     If Not Integer.TryParse(sSectionValues(3), nQty) Then Continue While
+                     SectionProgress.SParamList.Add(New SParam(SectionProgress.Section, dW, dL, nQty))
                   End If
                Next
          End Select
          nIndex += 1
       End While
-      SectionList = NewSectionList
       Return True
    End Function