diff --git a/AutoNester.cpp b/AutoNester.cpp
index dc03626..05f6a66 100644
--- a/AutoNester.cpp
+++ b/AutoNester.cpp
@@ -18,6 +18,7 @@
 #include "/EgtDev/Include/ENsDllMain.h"
 #include "/EgtDev/Include/EGkPolyArc.h"
 #include "/EgtDev/Extern/Optalog/Include/cns.h"
+#include "/EgtDev/Extern/Optalog/Include/cns_tooling.h"
 #include "/EgtDev/Extern/Optalog/Include/cns_egaltech.h"
 #include "/EgtDev/Include/SELkLockId.h"
 
@@ -34,6 +35,24 @@ CreateAutoNester( void)
    return static_cast<IAutoNester*> ( new(nothrow) AutoNester) ;
 }
 
+//----------------------------------------------------------------------------
+static void
+GetCNSPath( const PolyArc& Outline, vector<CNS_Element>& vElem)
+{
+  // converto nel formato Optalog
+   int nElem = Outline.GetPointNbr() ;
+   if ( Outline.IsClosed())
+      -- nElem ;
+   vElem.reserve( nElem) ;
+   Point3d ptIni, ptFin ; double dBulge ;
+   bool bNext = Outline.GetFirstArc( ptIni, ptFin, dBulge) ;
+   while ( bNext) {
+      double dLeftDeflection = - dBulge * DistXY( ptIni, ptFin) / 2 ;
+      vElem.push_back( { ptFin.x, ptFin.y, dLeftDeflection}) ;
+      bNext = Outline.GetNextArc( ptIni, ptFin, dBulge) ;
+   }
+}
+
 //----------------------------------------------------------------------------
 // AutoNester
 //----------------------------------------------------------------------------
@@ -76,55 +95,49 @@ AutoNester::Start( void)
 
 //----------------------------------------------------------------------------
 bool
-AutoNester::AddSheet( int nSheetId, const PolyArc& Outline, int nPriority, int nCount)
+AutoNester::AddSheet( int nSheetId, const PolyArc& Outline, double dKerf, int nPriority, int nCount)
 {
    if ( m_pOrder == nullptr)
       return false ;
    if ( ! Outline.IsClosed())
       return false ;
-  // contorno nel formato Optalog
-   const int nElem = Outline.GetPointNbr() - 1 ;
-   vector<CNS_Element> vElem ; vElem.reserve( nElem) ;
-   Point3d ptIni, ptFin ; double dBulge ;
-   bool bNext = Outline.GetFirstArc( ptIni, ptFin, dBulge) ;
-   while ( bNext) {
-      double dLeftDeflection = - dBulge * DistXY( ptIni, ptFin) / 2 ;
-      vElem.push_back( { ptFin.x, ptFin.y, dLeftDeflection}) ;
-      bNext = Outline.GetNextArc( ptIni, ptFin, dBulge) ;
-   }
-  // aggiungo
+  // aggiungo contorno
+   vector<CNS_Element> vElem ;
+   GetCNSPath( Outline, vElem) ;
    CNS_SheetPtr pSheet = CNS_AddNonRectangularSheet( m_pOrder, nCount, int( vElem.size()), vElem.data()) ;
    if ( pSheet == nullptr)
       return false ;
+  // imposto altri dati
    CNS_SetSheetUserString( pSheet, ToString( nSheetId).c_str()) ;
    CNS_SetSheetPriority( pSheet, nPriority) ;
+   CNS_SetNonRectangularSheetGaps( pSheet, dKerf, dKerf, dKerf, dKerf, dKerf) ;
    return true ;
 }
 
 //----------------------------------------------------------------------------
 bool
-AutoNester::AddPart( int nPartId, const PolyArc& Outline, bool bCanFlip, bool bCanRotate, int nPriority, int nCount)
+AutoNester::AddPart( int nPartId, const PolyArc& Outline, const PolyArc& ToolOutline,
+                     bool bCanFlip, bool bCanRotate, double dRotStep, int nPriority, int nCount)
 {
    if ( m_pOrder == nullptr)
       return false ;
-   if ( ! Outline.IsClosed())
+   if ( Outline.GetArcNbr() == 0  ||  ! Outline.IsClosed())
       return false ;
-  // contorno nel formato Optalog
-   const int nElem = Outline.GetPointNbr() - 1 ;
-   vector<CNS_Element> vElem ; vElem.reserve( nElem) ;
-   Point3d ptIni, ptFin ; double dBulge ;
-   bool bNext = Outline.GetFirstArc( ptIni, ptFin, dBulge) ;
-   while ( bNext) {
-      double dLeftDeflection = - dBulge * DistXY( ptIni, ptFin) / 2 ;
-      vElem.push_back( { ptFin.x, ptFin.y, dLeftDeflection}) ;
-      bNext = Outline.GetNextArc( ptIni, ptFin, dBulge) ;
-   }
-  // aggiungo
+  // aggiungo contorno
+   vector<CNS_Element> vElem ;
+   GetCNSPath( Outline, vElem) ;
    CNS_PartPtr pPart = CNS_AddPart( m_pOrder, nCount, int( vElem.size()), vElem.data()) ;
    if ( pPart == nullptr)
       return false ;
+  // eventuale contorno esterno del percorso utensili
+   if ( ToolOutline.GetArcNbr() > 0  &&  ToolOutline.IsClosed()) {
+      vector<CNS_Element> vTOl ;
+      GetCNSPath( ToolOutline, vTOl) ;
+      CNS_AddToolPathToPart( pPart, int( vTOl.size()), vTOl.data()) ;
+   }
+  // altri dati
    CNS_SetPartUserString( pPart, ToString( nPartId).c_str()) ;
-   CNS_SetPartAuthorizations( pPart, ( bCanFlip ? 1 : 0), ( bCanRotate ? 1 : 0), 0) ;
+   CNS_SetPartAuthorizations( pPart, ( bCanFlip ? 1 : 0), ( bCanRotate ? 1 : 0), dRotStep) ;
    CNS_SetPartPriority( pPart, nPriority) ;
    return true ;
 }
@@ -155,7 +168,7 @@ AutoNester::Compute( int nMaxTime)
   // passo i codici al nester
    CNS_UnLockLaunchingOrderOxy( m_pOrder, sKeyId.c_str(), sKeySign.c_str()) ;
   // lancio l'esecuzione
-   m_pComp = CNS_LaunchLocalComputation( m_pOrder, nMaxTime / 1000.) ;
+   m_pComp = CNS_LaunchLocalComputation( m_pOrder, nMaxTime) ;
    return ( m_pComp != nullptr) ;
 }
 
diff --git a/AutoNester.h b/AutoNester.h
index 55d7162..46589fa 100644
--- a/AutoNester.h
+++ b/AutoNester.h
@@ -24,8 +24,9 @@ class AutoNester : public IAutoNester
    public :
       ~AutoNester( void) override ;
       bool Start( void) override ;
-      bool AddSheet( int nSheetId, const PolyArc& Outline, int nPriority, int nCount) override ;
-      bool AddPart( int nPartId, const PolyArc& Outline, bool bCanFlip, bool bCanRotate, int nPriority, int nCount) override ;
+      bool AddSheet( int nSheetId, const PolyArc& Outline, double dKerf, int nPriority, int nCount) override ;
+      bool AddPart( int nPartId, const PolyArc& Outline, const PolyArc& ToolOutline,
+                    bool bCanFlip, bool bCanRotate, double dRotStep, int nPriority, int nCount) override ;
       bool SetInterpartGap( double dGap) override ;
       bool Compute( int nMaxTime) override ;
       bool CancelComputation( void) override ;