diff --git a/MyVeinMatch/VeinMatchingWindow.xaml b/MyVeinMatch/VeinMatchingWindow.xaml
index b5e5c4f..8b444ec 100644
--- a/MyVeinMatch/VeinMatchingWindow.xaml
+++ b/MyVeinMatch/VeinMatchingWindow.xaml
@@ -61,7 +61,19 @@
                         </Expander>
                     </Border>-->
 
-               <Border Style="{StaticResource Border}" Margin="0,1,0,5">
+                    <Border Style="{StaticResource Border}" Margin="0,1,0,5">
+                        <Expander Foreground="{DynamicResource Omag_White}"
+                              HorizontalAlignment="Stretch" 
+                              Header="OPTION"
+                              ExpandDirection="Down" 
+                              IsExpanded="False">
+                            <ComboBox Name="OptionColor" 
+                              Style="{StaticResource Raw_ComboBox}"
+                              Margin="1,5,1,0"/>
+                        </Expander>
+                    </Border>
+
+                    <Border Style="{StaticResource Border}" Margin="0,1,0,5">
                   <Expander Foreground="{DynamicResource Omag_White}"
                               HorizontalAlignment="Stretch" 
                               Header="RESET"
@@ -88,24 +100,43 @@
                               Header="SOLID"
                               ExpandDirection="Down" 
                               IsExpanded="False">
-                     <UniformGrid Columns="3">
-                        <Button Name="Btn1"
+                            <Grid >
+                                <Grid.ColumnDefinitions>
+                                    <ColumnDefinition Width="1*"/>
+                                    <ColumnDefinition Width="1*"/>
+                                    <ColumnDefinition Width="1*"/>
+                                </Grid.ColumnDefinitions>
+                                <Grid.RowDefinitions>
+                                    <RowDefinition Height="1*"/>
+                                    <RowDefinition Height="1*"/>
+                                </Grid.RowDefinitions>
+                                <Button Name="Btn1" Grid.Row="0" Grid.Column="0"
                                 Style="{StaticResource VeinMatchWindow_Button}"
                         Margin="1,5,1,0"
                         Content="🤙"
                         ToolTip="Crea solido del part selezionato"/>
-                        <Button Name="Btn2"
+                                <Button Name="Btn2" Grid.Row="0" Grid.Column="1"
                                 Style="{StaticResource VeinMatchWindow_Button}"
                         Margin="1,5,1,0"
                         Content="🤞"
                         ToolTip="Crea tutti i solidi"/>
-                        <Button Name="Btn3"
+                                <Button Name="Btn3" Grid.Row="0" Grid.Column="2"
                                 Style="{StaticResource VeinMatchWindow_Button}"
                         Margin="1,5,1,0"
                         Content="🤟"
                         ToolTip="Resetta i solidi"/>
-                     </UniformGrid>
-                  </Expander>
+                                <Button Name="Btn21" Grid.Row="1" Grid.Column="0"
+                                Style="{StaticResource VeinMatchWindow_Button}"
+                        Margin="1,5,1,0"
+                        Content="💣"
+                        ToolTip="Esplodi assemblato"/>
+                                <Button Name="Btn22" Grid.Row="1" Grid.Column="1"
+                                Style="{StaticResource VeinMatchWindow_Button}"
+                        Margin="1,5,1,0"
+                        Content="🍯"
+                        ToolTip="Esplodi assemblato"/>
+                            </Grid>
+                        </Expander>
                </Border>
 
                <Border Style="{StaticResource Border}" Margin="0,1,0,5">
diff --git a/MyVeinMatch/VeinMatchingWindow.xaml.vb b/MyVeinMatch/VeinMatchingWindow.xaml.vb
index 267f14f..7a851a8 100644
--- a/MyVeinMatch/VeinMatchingWindow.xaml.vb
+++ b/MyVeinMatch/VeinMatchingWindow.xaml.vb
@@ -44,6 +44,9 @@ Public Class VeinMatchingWindow
    Private m_nId As Integer = GDB_ID.NULL
    Private m_PartSolidList As New ObservableCollection(Of PartSolid)
    Private m_dAngRot As Double = 0
+   ' Nero, Bianco, Fucsia, Rosso, Verde
+   Private m_ColorList As New List(Of Color3d)({New Color3d(0, 0, 0), New Color3d(255, 255, 255), New Color3d(247, 21, 237),
+                                               New Color3d(235, 12, 12), New Color3d(78, 249, 43)})
 #End Region
 
    Enum ALETTE
@@ -138,6 +141,9 @@ Public Class VeinMatchingWindow
          PairOption.SelectedIndex = 1
          MeasureOption.ItemsSource = New List(Of String)({"Lunghezza", "Direzione", "Inizio", "Fine"})
          MeasureOption.SelectedIndex = 0
+         OptionColor.ItemsSource = New List(Of String)({"Nero", "Bianco", "Fucsia", "Rosso", "Verde"})
+
+         OptionColor.SelectedIndex = 0
          ' ---------------------------------------- View 3d - fine
          m_bFirst = False
       End If
@@ -193,6 +199,8 @@ Public Class VeinMatchingWindow
       Return PartSolidId
    End Function
 
+#Region " GESTIONE SCENA"
+
    Private Sub OnMouseDownFor3D(sender As Object, e As Windows.Forms.MouseEventArgs)
       ' Per default no drag
       m_bDrag = False
@@ -715,6 +723,8 @@ Public Class VeinMatchingWindow
       EgtDraw()
    End Sub
 
+#End Region    ' Gestione Scena
+
    Private Sub ShowTextBtn_Click(sender As Object, e As RoutedEventArgs) Handles ShowTextBtn.Click
       VeinMatching.SetShowText(If(ShowTextBtn.IsChecked, False))
    End Sub
@@ -757,6 +767,8 @@ Public Class VeinMatchingWindow
       VeinMatching.AssemblyParts(ThicknessRaw)
    End Sub
 
+#Region " SOLIDO 3D"
+
    Private Sub CreatePartSolid()
       'inizializzo la lista dei PartSolid
       EgtSetCurrentContext(m_nVeinCtx)
@@ -1122,6 +1134,59 @@ Public Class VeinMatchingWindow
 
    End Sub
 
+   Private Sub ExplodeSolid_Click() Handles Btn21.Click
+      ' recupero l'elenco di tutti i SOLID del progetto
+      Dim CurrCentAssembly As New Point3d(0, 0, 0)
+      Dim nCount As Integer = 0
+      ' calcolo la media dei centri dei solidi
+      For Each Item In m_PartSolidList
+         CurrCentAssembly.x = (CurrCentAssembly.x + Item.Center().x)
+         CurrCentAssembly.y = (CurrCentAssembly.y + Item.Center().y)
+         CurrCentAssembly.z = (CurrCentAssembly.z + Item.Center().z)
+         nCount += 1
+      Next
+      ' se ho almeno due pezzi allora procedo
+      If nCount > 1 Then
+         CurrCentAssembly.x = CurrCentAssembly.x / nCount
+         CurrCentAssembly.y = CurrCentAssembly.y / nCount
+         CurrCentAssembly.z = CurrCentAssembly.z / nCount
+         ' calcolo il versore di esplosione
+         For Each Item In m_PartSolidList
+            Dim VtExplosion As Vector3d = Item.Center() - CurrCentAssembly
+            VtExplosion = VtExplosion / VtExplosion.Len()
+            Item.Move(VtExplosion * VtExplosion.Len() * 1000)
+         Next
+         EgtDraw()
+      End If
+   End Sub
+
+   Private Sub Collapse_Click() Handles Btn22.Click
+      For Each Item In m_PartSolidList
+         Item.Move(-Item.vtLastMove)
+      Next
+      EgtDraw()
+   End Sub
+
+   Private Sub OptionColor_IsChanged() Handles OptionColor.SelectionChanged
+      If m_nIdPart <> GDB_ID.NULL Then
+         Dim PartSolidSel As PartSolid = GetPartSolid(m_nIdPart)
+         ' recupero il Layer che contiene i contorni
+         Dim BoundaryLay As Integer = EgtGetFirstNameInGroup(PartSolidSel.PartSolidId, "Boundary")
+         If BoundaryLay <> GDB_ID.NULL Then
+            Dim Cl As Color3d = m_ColorList(OptionColor.SelectedIndex)
+            Dim nEntId As Integer = EgtGetFirstInGroup(BoundaryLay)
+            While nEntId <> GDB_ID.NULL
+               EgtSetColor(nEntId, Cl)
+               nEntId = EgtGetNext(nEntId)
+            End While
+            EgtDraw()
+         End If
+
+      End If
+   End Sub
+
+#End Region    ' Solid 3D
+
 End Class
 
 Friend Module VeinMatching
@@ -2790,6 +2855,7 @@ Public Class PartSolid
       EgtMove(m_PartId, vtMove)
       EgtMove(m_PartSolidId, vtMove)
       EgtMove(m_TernaId, vtMove)
+      m_vtLastMove = vtMove
    End Sub
 
    Public Sub Rotate(ptAx As Point3d, vtAx As Vector3d, dAng As Double)
diff --git a/SideEntityControl/SideEntityControlVM.vb b/SideEntityControl/SideEntityControlVM.vb
index 2aae857..61d734d 100644
--- a/SideEntityControl/SideEntityControlVM.vb
+++ b/SideEntityControl/SideEntityControlVM.vb
@@ -29,7 +29,7 @@ Public Class SideEntityControlVM
    ' Variabile che indica se sono in sideangle o drip
    Friend m_Mode As ModeOpt
 
-   Friend Shared m_SideAngleCheck As Boolean = False
+   Friend Shared m_SideAngleCheck As Boolean = True
 
    ' Lista di tutte le entità (inclinabili) presenti nel progetto
    Private m_SideEntityList As ObservableCollection(Of SideEntity)