diff --git a/EgtMachKernel.rc b/EgtMachKernel.rc
index f1fdc52..c1a6f4f 100644
Binary files a/EgtMachKernel.rc and b/EgtMachKernel.rc differ
diff --git a/MachMgr.h b/MachMgr.h
index 5d3a5bb..8e23dfb 100644
--- a/MachMgr.h
+++ b/MachMgr.h
@@ -342,6 +342,7 @@ class MachMgr : public IMachMgr
       bool SimGetMoveInfo( int& nGmove, double& dFeed) const override ;
       bool SimSetStep( double dStep) override ;
       bool SimSetUiStatus( int nUiStatus) override ;
+      bool SimShowVMill( bool bShow) override ;
       bool SimEnableToolTipTrace( bool bEnable) override ;
       bool SimGoHome( void) override ;
       bool SimExit( void) override ;
diff --git a/MachMgrSimulation.cpp b/MachMgrSimulation.cpp
index 35e1cef..abe9583 100644
--- a/MachMgrSimulation.cpp
+++ b/MachMgrSimulation.cpp
@@ -130,6 +130,17 @@ MachMgr::SimSetUiStatus( int nUiStatus)
    return m_pSimul->SetUiStatus( nUiStatus) ;
 }
 
+//----------------------------------------------------------------------------
+bool
+MachMgr::SimShowVMill( bool bShow)
+{
+  // verifico simulatore
+   if ( m_pSimul == nullptr)
+      return false ;
+  // imposto visualizzazione solidi Vmill
+   return m_pSimul->ShowVMill( bShow) ;
+}
+
 //----------------------------------------------------------------------------
 bool
 MachMgr::SimEnableToolTipTrace( bool bEnable)
diff --git a/Simulator.h b/Simulator.h
index 2ce446d..01ffea2 100644
--- a/Simulator.h
+++ b/Simulator.h
@@ -61,6 +61,7 @@ class __declspec( novtable) ISimulator
       virtual bool SetToolForVmill( const std::string& sTool, const std::string& sHead, int nExit, int nFlag,
                                     double dPar1, double dPar2, const INTVECTOR& vVmill, bool bFirst) = 0 ;
       virtual bool EnableToolsForVmill( bool bEnable) = 0 ;
+      virtual bool ShowVMill( bool bShow) = 0 ;
       virtual bool EnableToolTipTrace( bool bEnable) = 0 ;
       virtual int  MoveAxes( int nMoveType, const SAMVECTOR& vAxNaEpSt) = 0 ; 
       virtual bool SaveCmd( int nType, int nPar, const std::string& sPar, const std::string& sPar2) = 0 ;
diff --git a/SimulatorMP.h b/SimulatorMP.h
index 9060e32..8a3d7c9 100644
--- a/SimulatorMP.h
+++ b/SimulatorMP.h
@@ -48,6 +48,8 @@ class SimulatorMP : public ISimulator
       bool SetToolForVmill( const std::string& sTool, const std::string& sHead, int nExit, int nFlag,
                             double dPar1, double dPar2, const INTVECTOR& vVmill, bool bFirst) override ;
       bool EnableToolsForVmill( bool bEnable) override ;
+      bool ShowVMill( bool bShow) override
+               { return false ; }
       bool EnableToolTipTrace( bool bEnable) override
                { return false ; }
       int  MoveAxes( int nMoveType, const SAMVECTOR& vAxNaEpSt) override ;
diff --git a/SimulatorSP.cpp b/SimulatorSP.cpp
index 6d84a36..244c0d1 100644
--- a/SimulatorSP.cpp
+++ b/SimulatorSP.cpp
@@ -1681,6 +1681,44 @@ SimulatorSP::ResetCollisionMark( void)
    return true ;
 }
 
+//----------------------------------------------------------------------------
+bool
+SimulatorSP::ShowVMill( bool bShow)
+{
+  // recupero tutti i grezzi collegati agli assi macchina
+   INTVECTOR vRawId = m_pMachine->GetAllLinkedRawParts() ;
+  // recupero gli altri grezzi
+   int nRawId = m_pMchMgr->GetFirstRawPart() ;
+   while ( nRawId != GDB_ID_NULL) {
+      vRawId.push_back( nRawId) ;
+      nRawId = m_pMchMgr->GetNextRawPart( nRawId) ;
+   }
+  // recupero eventuale gruppo delle curve di traccia
+   if ( ! m_pMachine->LuaGetGlobVar( GLOB_VAR + GVAR_TOOLTRACE, m_nTraceGroup))
+      m_nTraceGroup = GDB_ID_NULL ;
+  // ciclo sui grezzi
+   for ( int nRawId : vRawId) {
+     // se grezzo attivo nella fase corrente
+      if ( m_pMchMgr->VerifyRawPartPhase( nRawId, m_pMchMgr->GetCurrPhase())) {
+        // ciclo sugli oggetti del grezzo
+         int nId = m_pGeomDB->GetFirstInGroup( nRawId) ;
+         while ( nId != GDB_ID_NULL) {
+           // se è il VMill
+            if ( find( m_VmId.begin(), m_VmId.end(), nId) != m_VmId.end())
+               m_pGeomDB->SetStatus( nId, ( bShow ? GDB_ST_ON : GDB_ST_OFF)) ;
+           // se altrimenti è il gruppo di tracciatura
+            else if ( nId == m_nTraceGroup)
+               m_pGeomDB->SetStatus( nId, GDB_ST_ON) ;
+           // altro
+            else
+               m_pGeomDB->SetStatus( nId, ( bShow ? GDB_ST_OFF : GDB_ST_ON)) ;
+            nId = m_pGeomDB->GetNext( nId) ;
+         }
+      }
+   } 
+   return true ;
+}
+
 //----------------------------------------------------------------------------
 bool
 SimulatorSP::EnableToolTipTrace( bool bEnable)
diff --git a/SimulatorSP.h b/SimulatorSP.h
index 115fe40..de49ca7 100644
--- a/SimulatorSP.h
+++ b/SimulatorSP.h
@@ -48,6 +48,7 @@ class SimulatorSP : public ISimulator
       bool SetToolForVmill( const std::string& sTool, const std::string& sHead, int nExit, int nFlag,
                             double dPar1, double dPar2, const INTVECTOR& vVmill, bool bFirst) override ;
       bool EnableToolsForVmill( bool bEnable) override ;
+      bool ShowVMill( bool bShow) override ;
       bool EnableToolTipTrace( bool bEnable) override ;
       int  MoveAxes( int nMoveType, const SAMVECTOR& vAxNaEpSt) override ; 
       bool SaveCmd( int nType, int nPar, const std::string& sPar, const std::string& sPar2) override