diff --git a/EXE_NstAutoNesting.cpp b/EXE_NstAutoNesting.cpp
index 41ba106..3a9ab4c 100644
--- a/EXE_NstAutoNesting.cpp
+++ b/EXE_NstAutoNesting.cpp
@@ -18,6 +18,8 @@
 #include "EXE_Const.h"
 #include "DllNesting.h"
 #include "/EgtDev/Include/EGkCurve.h"
+#include "/EgtDev/Include/EGkCurveComposite.h"
+#include "/EgtDev/Include/EGkOffsetCurve.h"
 #include "/EgtDev/Include/EGkSurfFlatRegion.h"
 #include "/EgtDev/Include/ENsAutoNester.h"
 #include "/EgtDev/Include/EGnStringUtils.h"
@@ -48,7 +50,7 @@ ExeAutoNestStart( void)
 
 //-----------------------------------------------------------------------------
 bool
-ExeAutoNestAddSheet( int nSheetId, int nOutlineId, int nPriority, int nCount)
+ExeAutoNestAddSheet( int nSheetId, int nOutlineId, double dKerf, int nPriority, int nCount)
 {
    if ( IsNull( s_pAutoNester))
       return false ;
@@ -85,13 +87,32 @@ ExeAutoNestAddSheet( int nSheetId, int nOutlineId, int nPriority, int nCount)
       Outline.Mirror( ORIG, Z_AX) ;
    else
       return false ;
-  // aggiungo il pezzo
+  // se richiesto kerf ( sempre nullo o positivo)
+   if ( dKerf > 10 * EPS_SMALL) {
+     // curva di contorno
+      PtrOwner<ICurveComposite> pCompo( CreateCurveComposite()) ;
+      if ( IsNull( pCompo)  ||  ! pCompo->FromPolyArc( Outline))
+         return false ;
+     // verifico sia CCW
+      double dArea ; pCompo->GetAreaXY( dArea) ;
+      if ( dArea < 0)
+         pCompo->Invert() ;
+     // eseguo offset
+      OffsetCurve OffsCrv ;
+      if ( ! OffsCrv.Make( pCompo, - dKerf, ICurve::OFF_FILLET))
+         return false ;
+      PtrOwner<ICurve> pOffs( OffsCrv.GetLongerCurve()) ;
+     // riassegno a PolyArc
+      if ( IsNull( pOffs)  ||  ! pOffs->ApproxWithArcs( LIN_TOL_FINE, ANG_TOL_STD_DEG, Outline))
+         return false ;
+   }  
+  // aggiungo il pannello
    return s_pAutoNester->AddSheet( nSheetId, Outline, nPriority, nCount) ;
 }
 
 //-----------------------------------------------------------------------------
 bool
-ExeAutoNestAddPart( int nPartId, int nOutlineId, int nCount)
+ExeAutoNestAddPart( int nPartId, int nOutlineId, bool bCanFlip, bool bCanRotate, int nPriority, int nCount)
 {
    if ( IsNull( s_pAutoNester))
       return false ;
@@ -129,7 +150,7 @@ ExeAutoNestAddPart( int nPartId, int nOutlineId, int nCount)
    else
       return false ;
   // aggiungo il pezzo
-   if ( ! s_pAutoNester->AddPart( nPartId, Outline, nCount))
+   if ( ! s_pAutoNester->AddPart( nPartId, Outline, bCanFlip, bCanRotate, nPriority, nCount))
       return false ;
   // incremento contatore pezzi
    s_nTotParts += nCount ;
@@ -183,20 +204,20 @@ ExeAutoNestPrintResults( const string& sHtmlFile)
 
 //-----------------------------------------------------------------------------
 bool
-ExeAutoNestGetResults( int& nNestedParts, int& nTotParts, int& nTotSheets, int& nDiffSheets, double& dTotFillRatio)
+ExeAutoNestGetResults( int& nNestedParts, int& nParts, int& nSheets, int& nNestings, double& dTotFillRatio)
 {
    if ( IsNull( s_pAutoNester)  ||  ! s_pAutoNester->GetResults( s_dTotFillRatio, s_vANestInfo))
       return false ;
    nNestedParts = 0 ;
-   nTotParts = s_nTotParts ;
-   nTotSheets = 0 ;
-   nDiffSheets = 0 ;
+   nParts = s_nTotParts ;
+   nSheets = 0 ;
+   nNestings = 0 ;
    dTotFillRatio = s_dTotFillRatio ;
    for ( int i = 0 ; i < int( s_vANestInfo.size()) ; ++ i) {
      // se sheet 
       if ( s_vANestInfo[i].nType > 0) {
-         ++ nDiffSheets ;
-         nTotSheets += s_vANestInfo[i].nType ;
+         ++ nNestings ;
+         nSheets += s_vANestInfo[i].nType ;
          nNestedParts += s_vANestInfo[i].nFlag * s_vANestInfo[i].nType ;
       }
    }
diff --git a/EgtExecutor.rc b/EgtExecutor.rc
index d264ac8..2133dba 100644
Binary files a/EgtExecutor.rc and b/EgtExecutor.rc differ
diff --git a/LUA_Nesting.cpp b/LUA_Nesting.cpp
index 06749d6..5ec0647 100644
--- a/LUA_Nesting.cpp
+++ b/LUA_Nesting.cpp
@@ -108,18 +108,20 @@ LuaAutoNestStart( lua_State* L)
 static int
 LuaAutoNestAddSheet( lua_State* L)
 {
-  // 4 parametri : nSheetId, nOutlineId, nPriority, nCount
+  // 5 parametri : nSheetId, nOutlineId, dKerf, nPriority, nCount
    int nSheetId ;
    LuaCheckParam( L, 1, nSheetId)
    int nOutlineId ;
    LuaCheckParam( L, 2, nOutlineId)
+   double dKerf ;
+   LuaCheckParam( L, 3, dKerf)
    int nPriority ;
-   LuaCheckParam( L, 3, nPriority)
+   LuaCheckParam( L, 4, nPriority)
    int nCount ;
-   LuaCheckParam( L, 4, nCount)
+   LuaCheckParam( L, 5, nCount)
    LuaClearStack( L) ;
   // aggiungo un pannello al nesting corrente
-   bool bOk = ExeAutoNestAddSheet( nSheetId, nOutlineId, nPriority, nCount) ;
+   bool bOk = ExeAutoNestAddSheet( nSheetId, nOutlineId, dKerf, nPriority, nCount) ;
   // restituisco il risultato
    LuaSetParam( L, bOk) ;
    return 1 ;
@@ -129,16 +131,22 @@ LuaAutoNestAddSheet( lua_State* L)
 static int
 LuaAutoNestAddPart( lua_State* L)
 {
-  // 3 parametri : nPartId, nOutlineId, nCount
+  // 6 parametri : nPartId, nOutlineId, bCanFlip, bCanRotate, nPriority, nCount
    int nPartId ;
    LuaCheckParam( L, 1, nPartId)
    int nOutlineId ;
    LuaCheckParam( L, 2, nOutlineId)
+   bool bCanFlip ;
+   LuaCheckParam( L, 3, bCanFlip)
+   bool bCanRotate ;
+   LuaCheckParam( L, 4, bCanRotate)
+   int nPriority ;
+   LuaCheckParam( L, 5, nPriority)
    int nCount ;
-   LuaCheckParam( L, 3, nCount)
+   LuaCheckParam( L, 6, nCount)
    LuaClearStack( L) ;
   // aggiungo un pezzo al nesting corrente
-   bool bOk = ExeAutoNestAddPart( nPartId, nOutlineId, nCount) ;
+   bool bOk = ExeAutoNestAddPart( nPartId, nOutlineId, bCanFlip, bCanRotate, nPriority, nCount) ;
   // restituisco il risultato
    LuaSetParam( L, bOk) ;
    return 1 ;
@@ -193,7 +201,7 @@ LuaAutoNestGetComputationStatus( lua_State* L)
 {
   // nessun parametro
    LuaClearStack( L) ;
-  // lancio calcolo del nesting
+  // recupero lo stato di esecuzione del nesting
    int nStatus ;
    bool bOk = ExeAutoNestGetComputationStatus( nStatus) ;
   // restituisco il risultato
@@ -224,14 +232,14 @@ LuaAutoNestGetResults( lua_State* L)
   // nessun parametro
    LuaClearStack( L) ;
   // recupero il risultato della soluzione
-   int nNestedParts, nTotParts, nTotSheets, nDiffSheets ; double dTotFillRatio ;
-   bool bOk = ExeAutoNestGetResults( nNestedParts, nTotParts, nTotSheets, nDiffSheets, dTotFillRatio) ;
+   int nNestedParts, nParts, nSheets, nNestings ; double dTotFillRatio ;
+   bool bOk = ExeAutoNestGetResults( nNestedParts, nParts, nSheets, nNestings, dTotFillRatio) ;
   // restituisco il risultato
    if ( bOk) {
       LuaSetParam( L, nNestedParts) ;
-      LuaSetParam( L, nTotParts) ;
-      LuaSetParam( L, nTotSheets) ;
-      LuaSetParam( L, nDiffSheets) ;
+      LuaSetParam( L, nParts) ;
+      LuaSetParam( L, nSheets) ;
+      LuaSetParam( L, nNestings) ;
       LuaSetParam( L, dTotFillRatio) ;
       return 5 ;
    }