diff --git a/EgtMachKernel.rc b/EgtMachKernel.rc
index 4817995..2daa5cc 100644
Binary files a/EgtMachKernel.rc and b/EgtMachKernel.rc differ
diff --git a/Milling.cpp b/Milling.cpp
index 2b6c664..3429cb0 100644
--- a/Milling.cpp
+++ b/Milling.cpp
@@ -6533,13 +6533,11 @@ Milling::CalcAndSetCorrAuxDir( const ICurveComposite* pCompo, double dU, bool bI
          return true ;
       }
    }
-  // se impostato come parametro di lavorazione nelle UserNotes
+  // reset o assegnamento da parametro di lavorazione nelle UserNotes
    Vector3d vtAux ;
-   if ( GetValInNotes( m_Params.m_sUserNotes, UN_VTAUXDIR, vtAux)) {
+   if ( GetValInNotes( m_Params.m_sUserNotes, UN_VTAUXDIR, vtAux))
       vtAux.Normalize() ;
-      SetAuxDir( vtAux) ;
-      return true ;
-   }
+   SetAuxDir( vtAux) ;
 
    return true ;
 }
diff --git a/Operation.cpp b/Operation.cpp
index fa0e297..5ac8f51 100644
--- a/Operation.cpp
+++ b/Operation.cpp
@@ -2727,11 +2727,15 @@ Operation::CalculateClPathRobotAxesValues( int nClPathId, double dAngDeltaMinFor
       Vector3d vtDir = pCamData->GetToolDir() ;
       Vector3d vtAux ;
       if ( ! bUseRefAux) {
-         if ( nSolCh == MCH_SCC_ADIR_NEAR  ||  nSolCh == MCH_SCC_ADIR_FAR) {
+         if (( nSolCh == MCH_SCC_ADIR_NEAR  ||  nSolCh == MCH_SCC_STD)  &&  ! pCamData->GetAuxDir().IsSmall()) {
             vtAux = OrthoCompo( pCamData->GetAuxDir(), vtDir) ;
             vtAux.Normalize() ;
          }
-         else {
+         else if (( nSolCh == MCH_SCC_ADIR_FAR  ||  nSolCh == MCH_SCC_OPPOSITE)  &&  ! pCamData->GetAuxDir().IsSmall()) {
+            vtAux = - OrthoCompo( pCamData->GetAuxDir(), vtDir) ;
+            vtAux.Normalize() ;
+         }
+         else {           // MCH_SCC_NONE (o riconducibili a questo)
             Frame3d frTool ;
             frTool.Set( ORIG, vtDir) ;
             frTool.Rotate( frTool.Orig(), frTool.VersZ(), 0, 1) ;
diff --git a/Pocketing.cpp b/Pocketing.cpp
index 7d8e1f2..ecab9ae 100644
--- a/Pocketing.cpp
+++ b/Pocketing.cpp
@@ -5169,10 +5169,9 @@ Pocketing::AddApproach( const Point3d& ptP, const Vector3d& vtTool, double dSafe
    else {
      // se impostato come parametro di lavorazione nelle UserNotes
       Vector3d vtAux ;
-      if ( GetValInNotes( m_Params.m_sUserNotes, UN_VTAUXDIR, vtAux)) {
+      if ( GetValInNotes( m_Params.m_sUserNotes, UN_VTAUXDIR, vtAux))
          vtAux.Normalize() ;
-         SetAuxDir( vtAux) ;
-      }
+      SetAuxDir( vtAux) ;
    }
   // se sopra attacco c'è spazio per sicurezza o approccio
    double dSafeDist = ( m_bAggrBottom ? dSafeAggrBottZ : dSafeZ) ;
diff --git a/PocketingNT.cpp b/PocketingNT.cpp
index 2b7c3dd..2e2f491 100644
--- a/PocketingNT.cpp
+++ b/PocketingNT.cpp
@@ -5261,10 +5261,9 @@ PocketingNT::AddApproach( const Point3d& ptP, const Vector3d& vtTool, double dSa
    else {
      // se impostato come parametro di lavorazione nelle UserNotes
       Vector3d vtAux ;
-      if ( GetValInNotes( m_Params.m_sUserNotes, UN_VTAUXDIR, vtAux)) {
+      if ( GetValInNotes( m_Params.m_sUserNotes, UN_VTAUXDIR, vtAux))
          vtAux.Normalize() ;
-         SetAuxDir( vtAux) ;
-      }
+      SetAuxDir( vtAux) ;
    }
   // se sopra attacco c'è spazio per sicurezza o approccio
    double dSafeDist = ( m_bAggrBottom ? dSafeAggrBottZ : dSafeZ) ;
diff --git a/SurfFinishing.cpp b/SurfFinishing.cpp
index 11062b3..c12ff24 100644
--- a/SurfFinishing.cpp
+++ b/SurfFinishing.cpp
@@ -1797,6 +1797,11 @@ SurfFinishing::ProcessCrvCompo( int nPathId, int nPvId, int nClId)
      // Imposto dati comuni
       SetPathId( nPxId) ;
       SetToolDir( vtTool) ;
+      Vector3d vtAux ;
+      if ( GetValInNotes( m_Params.m_sUserNotes, UN_VTAUXDIR, vtAux))
+         vtAux.Normalize() ;
+      SetAuxDir( vtAux) ;
+
 
      // assegno il vettore estrusione al gruppo del percorso
       m_pGeomDB->SetInfo( nPxId, KEY_EXTR, vtTool) ;
@@ -2042,6 +2047,10 @@ SurfFinishing::ProcessSfr( int nPathId, int nPvId, int nClId)
      // Imposto dati comuni
       SetPathId( nPxId) ;
       SetToolDir( vtTool) ;
+      Vector3d vtAux ;
+      if ( GetValInNotes( m_Params.m_sUserNotes, UN_VTAUXDIR, vtAux))
+         vtAux.Normalize() ;
+      SetAuxDir( vtAux) ;
 
      // assegno il vettore estrusione al gruppo del percorso
       m_pGeomDB->SetInfo( nPxId, KEY_EXTR, vtTool) ;
diff --git a/SurfRoughing.cpp b/SurfRoughing.cpp
index d261184..2d7f712 100644
--- a/SurfRoughing.cpp
+++ b/SurfRoughing.cpp
@@ -2098,6 +2098,10 @@ SurfRoughing::ProcessPath( int nPathId, int nPvId, int nClId)
      // Imposto dati comuni
       SetPathId( nPxId) ;
       SetToolDir( vtTool) ;
+      Vector3d vtAux ;
+      if ( GetValInNotes( m_Params.m_sUserNotes, UN_VTAUXDIR, vtAux))
+         vtAux.Normalize() ;
+      SetAuxDir( vtAux) ;
 
      // se richiesto ordine per ZChunk, aggiusto le geometrie inserite nel gruppo
       if ( m_bOrderZ)