diff --git a/EgtMachKernel.rc b/EgtMachKernel.rc
index 7084942..4b10af5 100644
Binary files a/EgtMachKernel.rc and b/EgtMachKernel.rc differ
diff --git a/MachiningConst.h b/MachiningConst.h
index 54f4d73..168d3ab 100644
--- a/MachiningConst.h
+++ b/MachiningConst.h
@@ -14,25 +14,4 @@
 #pragma once
 
 #include "/EgtDev/Include/EMkMachiningConst.h"
-
-//----------------------------------------------------------------------------
-// Chiave per elenco identificativi di selezione
-static std::string KEY_IDS = "IDS" ;
-// Sottogruppi delle lavorazioni
-static std::string MCH_AUX = "AUX" ;
-static std::string MCH_PV = "PV" ;
-static std::string MCH_CL = "CL" ;
-static std::string MCH_PATH = "P" ;
-// Nomi di entità speciali
-static std::string MCH_RISE = "RISE" ;
-// Nomi di entità di preview
-static std::string MCH_PV_CUT = "CUT" ;
-static std::string MCH_PV_RCUT = "RCUT" ;
-static std::string MCH_PV_PRE_CUT = "PRC" ;
-static std::string MCH_PV_POST_CUT = "POC" ;
-// Chiave info con DeltaT lama in Preview
-static std::string MCH_PV_KEY_DT = "DT" ;
-
-//----------------------------------------------------------------------------
-// Feed equivalente a massima
-const double MAX_FEED = 100000 ;
+#include "/EgtDev/Include/EMkMachiningGeoConst.h"
diff --git a/Sawing.cpp b/Sawing.cpp
index 373bd2b..f764e02 100644
--- a/Sawing.cpp
+++ b/Sawing.cpp
@@ -1069,10 +1069,6 @@ Sawing::GenerateEntityPv( const ICurveLine* pLine, const Vector3d& vtTool, const
    int nId = ExeCreateRectangle3P( nPxId, ptIni + vtDZ, ptCross + vtDZ, ptEnd + vtDZ, RTY_LOC) ;
    m_pGeomDB->SetName( nId, MCH_PV_CUT) ;
    m_pGeomDB->SetMaterial( nId, LIME) ;
-   int nRId = ExeCreateSurfFrRectangle3P( nPxId, ptIni + vtDZ, ptCross + vtDZ, ptEnd + vtDZ, RTY_LOC) ;
-   m_pGeomDB->SetName( nRId, MCH_PV_RCUT) ;
-   Color colR = LIME ; colR.SetAlpha( 0) ;  // completamente trasparente
-   m_pGeomDB->SetMaterial( nRId, colR) ;
 
   // distanza XY tra centro e bordo taglio
    double dDeltaT = (( dElev < 0.5 * m_TParams.m_dDiam) ? sqrt( dElev * m_TParams.m_dDiam - dElev * dElev) : 0) ;
@@ -1092,7 +1088,17 @@ Sawing::GenerateEntityPv( const ICurveLine* pLine, const Vector3d& vtTool, const
    m_pGeomDB->SetName( nId3, MCH_PV_POST_CUT) ;
    m_pGeomDB->SetMaterial( nId3, FUCHSIA) ;
 
-  // salvo in info del gruppo la distanza XY tra centro e bordo taglio
+  // regione di taglio ridotto per nesting (sono escluse le parti iniziale e finale)
+   int nRrId = ExeCreateSurfFrRectangle3P( nPxId, ptIni, ptCross, ptEnd, RTY_LOC) ;
+   m_pGeomDB->SetName( nRrId, MCH_PV_RRCUT) ;
+   m_pGeomDB->SetMaterial( nRrId, INVISIBLE) ;
+  // regione di taglio completo per nesting
+   int nRId = ExeCreateSurfFrRectangle3P( nPxId, ptIni - vtDir * dDeltaT, ptCross + vtDir * dDeltaT, ptEnd, RTY_LOC) ;
+   m_pGeomDB->SetName( nRId, MCH_PV_RCUT) ;
+   m_pGeomDB->SetMaterial( nRId, INVISIBLE) ;
+
+  // salvo in info del gruppo la larghezza XY del taglio e la distanza XY tra centro e bordo taglio
+   m_pGeomDB->SetInfo( nPxId, MCH_PV_KEY_WT, vtToolH.LenXY()) ;
    m_pGeomDB->SetInfo( nPxId, MCH_PV_KEY_DT, dDeltaT) ;
 
    return true ;