diff --git a/EXE_NstCreateFlatParts.cpp b/EXE_NstCreateFlatParts.cpp
index a903f6c..25e73c0 100644
--- a/EXE_NstCreateFlatParts.cpp
+++ b/EXE_NstCreateFlatParts.cpp
@@ -704,11 +704,12 @@ ExeAdjustFlatPartLayer( int nLayerId)
             continue ;
          }
         // Determino l'angolo tra le due direzioni
-         double dAngDeg = 0 ;
-         vtDir1.GetAngleXY( vtDir2, dAngDeg) ;
+         double dAngDeg1 = 0 ;
+         vtDir1.GetAngleXY( vtDir2, dAngDeg1) ;
+         double dAngDeg2 = dAngDeg1 ;
         // Se angolo piccolo (circa tangenti), verifico se uno dei due piega all'interno
          const double EPS_ANG_TG = 5.0 ;
-         if ( abs( dAngDeg) < EPS_ANG_TG) {
+         if ( abs( dAngDeg1) < EPS_ANG_TG) {
            // Punto di giunzione
             Point3d ptP ;
             pCrv1->GetEndPoint( ptP) ;
@@ -726,12 +727,22 @@ ExeAdjustFlatPartLayer( int nLayerId)
             Vector3d vtDiff2 = ptP2 - ptP ;
             double dTmpAngDeg ;
             vtDiff1.GetAngleXY( vtDiff2, dTmpAngDeg) ;
-            if ( dTmpAngDeg < - EPS_ANG_SMALL)
-               dAngDeg = - 1 ;
+            if ( dTmpAngDeg < - EPS_ANG_SMALL) {
+               bool bArc1 = ( GetCurveArc( pCrv1) != nullptr) ;
+               bool bArc2 = ( GetCurveArc( pCrv2) != nullptr) ;
+               if ( bArc1  &&  ! bArc2)
+                  dAngDeg2 = - 1 ;
+               else if ( bArc2  &&  ! bArc1)
+                  dAngDeg1 = - 1 ;
+               else {
+                  dAngDeg1 = - 1 ;
+                  dAngDeg2 = - 1 ;
+               }
+            }
          }
         // Scrivo l'angolo nelle info delle curve
-         pGeomDB->SetInfo( nId, MCH_PV_KEY_NEXTANG, dAngDeg) ;
-         pGeomDB->SetInfo( nCalcId, MCH_PV_KEY_PREVANG, dAngDeg) ;
+         pGeomDB->SetInfo( nId, MCH_PV_KEY_NEXTANG, dAngDeg1) ;
+         pGeomDB->SetInfo( nCalcId, MCH_PV_KEY_PREVANG, dAngDeg2) ;
       }
      // Passo all'entità successiva
       nId = nNextId ;
diff --git a/EgtExecutor.rc b/EgtExecutor.rc
index effc985..a438244 100644
Binary files a/EgtExecutor.rc and b/EgtExecutor.rc differ