diff --git a/SurfRoughing.cpp b/SurfRoughing.cpp
index 19a743a..3bdc578 100644
--- a/SurfRoughing.cpp
+++ b/SurfRoughing.cpp
@@ -1531,6 +1531,9 @@ SurfRoughing::AddPocket( const INTVECTOR& vPocket, const Vector3d& vtTool, const
       if ( ! CalcPocketing( pSfr, m_TParams.m_dDiam / 2, GetOffsR(), m_Params.m_dSideStep, m_Params.m_dSideAngle,
                             m_Params.m_nSubType, true, vpCrvs))
          return false ;
+     // sistemo gli archi per massimo angolo al centro
+      for ( int i = 0 ; i < int( vpCrvs.size()) ; ++ i)
+         VerifyArcs( vpCrvs[i]) ;
 
      // salvo i loop esterni della superficie corrente come Polylinee ( per LeadIn/LeadOut)
       ICURVEPOVECTOR vLoops ; vLoops.resize( pSfr->GetChunkCount()) ;
@@ -2046,10 +2049,6 @@ SurfRoughing::ChooseCloseOrOpenEdge( ISurfFlatRegion* pSfr, const ISurfTriMesh*
   // " IL LATO E' APERTO <=> TUTTI I PUNTI DI CONTROLLO DISTANO MENO DI 50 * EPS_SMALL DALLE FACCE ( bOnIsClosed = F)
 
    const int NUM_POINTS = 4 ;
-   PtrOwner<ISurfFlatRegion> pSfrWithTmpProps( CreateSurfFlatRegion()) ;
-   if ( IsNull( pSfrWithTmpProps))
-      return false ;
-
   // scorro tutti i loop
    for ( int c = 0 ; c < pSfr->GetChunkCount() ; ++ c) {
       for ( int l = 0 ; l < pSfr->GetLoopCount( c) ; ++ l) {
@@ -2080,27 +2079,13 @@ SurfRoughing::ChooseCloseOrOpenEdge( ISurfFlatRegion* pSfr, const ISurfTriMesh*
                double dDist = 0. ;
                bIsOn = distPtStm.GetDist( dDist)  &&  dDist < 50 * EPS_SMALL ;
             }
-            if (( bIsOn  &&  ! bOnIsClosed)  ||  ( ! bIsOn  &&  bOnIsClosed))
-               pCrvCompoLoop->SetCurveTempProp( u, 1, 0) ;
+            if ( ( bIsOn  &&  ! bOnIsClosed)  ||  ( ! bIsOn  &&  bOnIsClosed))
+               pSfr->SetCurveTempProp( c, l, u, 1, 0) ;
          }
-        // aggiungo il Loop con Flag di lato Aperto/Chiuso alla superficie
-         if ( l == 0) {
-            if ( ! pSfrWithTmpProps->AddExtLoop( *pCrvCompoLoop))
-               return false ;
-         }
-         else
-            if ( ! pSfrWithTmpProps->AddIntLoop( *pCrvCompoLoop))
-               return false ;
       }
    }
 
-  // sostituisco la superficie da restituire
-   if ( ! pSfrWithTmpProps->IsValid()  ||
-        ! pSfr->Clear()  ||
-        ! pSfr->CopyFrom( pSfrWithTmpProps))
-      return false ;
-
-  return ( pSfr->IsValid()  &&  pSfr->GetChunkCount() != 0) ;
+  return true ;
 }