diff --git a/EgtMachKernel.rc b/EgtMachKernel.rc
index bb13488..690a2e1 100644
Binary files a/EgtMachKernel.rc and b/EgtMachKernel.rc differ
diff --git a/Pocketing.cpp b/Pocketing.cpp
index 0b416d7..c1aebc7 100644
--- a/Pocketing.cpp
+++ b/Pocketing.cpp
@@ -1621,7 +1621,7 @@ Pocketing::ProcessPath( int nPathId, int nPvId, int nClId)
             return false ;
          break ;
       case POCKET_SUB_SPIRALIN :
-         if ( ! AddSpiralIn( pCompo, vtTool, vtExtr, dDepth, dElev, dOkStep, bSplitArcs))
+         if ( ! AddSpiralIn( pCompo, vtTool, vtExtr, dDepth, dElev, dOkStep, bSplitArcs, bMidOpen, ptMidOpen))
             return false ;
          break ;
       case POCKET_SUB_SPIRALOUT :
@@ -2594,7 +2594,7 @@ Pocketing::AddOneWay( const ICurveComposite* pCompo, const Vector3d& vtTool, con
 //----------------------------------------------------------------------------
 bool
 Pocketing::AddSpiralIn( const ICurveComposite* pCompo, const Vector3d& vtTool, const Vector3d& vtExtr,
-                        double dDepth, double dElev, double dOkStep, bool bSplitArcs)
+                        double dDepth, double dElev, double dOkStep, bool bSplitArcs, bool bMidOpen, const Point3d& ptMidOpen)
 {
   // recupero distanze di sicurezza
    double dSafeZ = m_pMchMgr->GetCurrMachiningsMgr()->GetSafeZ() ;
@@ -2620,6 +2620,18 @@ Pocketing::AddSpiralIn( const ICurveComposite* pCompo, const Vector3d& vtTool, c
       if ( pMCrv->GetCurveCount() == 0)
          break ;
       ++ nReg ;
+
+     // se prima regione e gestione lato aperto
+      if ( nReg == 1  &&  bMidOpen) {
+        // premetto alla spirale la partenza da fuori
+         Point3d ptStart ; pMCrv->GetStartPoint( ptStart) ;
+         Vector3d vtMove = ptMidOpen - ptStart ; vtMove.Normalize() ;
+         Point3d ptOut = ptMidOpen + vtMove * ( 0.5 * m_TParams.m_dDiam + dSafeZ) ;
+         pMCrv->AddLine( ptOut, false) ;
+        // aggiungo al ritorno l'uscita
+         Point3d ptEnd ; pRCrv->GetEndPoint( ptEnd) ;
+         pRCrv->AddLine( ptOut, true) ;
+      }
    
      // determino numero e affondamento degli step
       int nStep = 1 ;
diff --git a/Pocketing.h b/Pocketing.h
index 868a831..e2e5061 100644
--- a/Pocketing.h
+++ b/Pocketing.h
@@ -80,7 +80,7 @@ class Pocketing : public Machining
       bool AddOneWay( const ICurveComposite* pCompo, const Vector3d& vtTool, const Vector3d& vtExtr,
                       double dDepth, double dElev, double dOkStep, bool bSplitArcs) ;
       bool AddSpiralIn( const ICurveComposite* pCompo, const Vector3d& vtTool, const Vector3d& vtExtr,
-                        double dDepth, double dElev, double dOkStep, bool bSplitArcs) ;
+                        double dDepth, double dElev, double dOkStep, bool bSplitArcs, bool bMidOpen, const Point3d& ptMidOpen) ;
       bool AddSpiralOut( const ICurveComposite* pCompo, const Vector3d& vtTool, const Vector3d& vtExtr,
                          double dDepth, double dElev, double dOkStep, bool bSplitArcs) ;
       bool CalcSpiral( const ICurveComposite* pCompo, int nReg, bool bSplitArcs,