diff --git a/Operation.cpp b/Operation.cpp
index 54b8513..02a2d2f 100644
--- a/Operation.cpp
+++ b/Operation.cpp
@@ -1290,6 +1290,10 @@ Operation::CalculateClPathAxesValues( int nClPathId, int nLinAxes, int nRotAxes,
          }
          string sInfo = "Outstroke : " + m_pMchMgr->GetOutstrokeInfo() ;
          LOG_INFO( GetEMkLogger(), sInfo.c_str())
+        // calcolo e salvo il valore dell'asse ausiliario di testa riportato sul grezzo
+         Vector3d vtBackAux ;
+         m_pMchMgr->GetCurrMachine()->GetBackAuxDirFromAngles( vAng1, vtBackAux)  ;
+         pCamData->SetBackAuxDir( vtBackAux) ;
         // imposto stato
          bFirst = false ;
         // memorizzo i valori degli assi lineari come nuovi precedenti