diff --git a/API_GdbModifyCurve.cpp b/API_GdbModifyCurve.cpp
index 732df58..3c688d7 100644
--- a/API_GdbModifyCurve.cpp
+++ b/API_GdbModifyCurve.cpp
@@ -192,3 +192,10 @@ __stdcall EgtExplodeCurveCompo( int nId, int* pnCount)
 {
    return ExeExplodeCurveCompo( nId, pnCount) ;
 }
+
+//-------------------------------------------------------------------------------
+BOOL
+__stdcall EgtMergeCurvesInCurveCompo( int nId, double dLinTol)
+{
+   return ( ExeMergeCurvesInCurveCompo( nId, dLinTol) ? TRUE : FALSE) ;
+}
diff --git a/API_MachMgr.cpp b/API_MachMgr.cpp
index 8964625..f59bf7d 100644
--- a/API_MachMgr.cpp
+++ b/API_MachMgr.cpp
@@ -679,9 +679,27 @@ __stdcall EgtSimStop( void)
    return ( ExeSimStop() ? TRUE : FALSE) ;
 }
 
+//-----------------------------------------------------------------------------
+// Generation
 //-----------------------------------------------------------------------------
 BOOL
 __stdcall EgtGenerate( const wchar_t* wsCncFile, const wchar_t* wsInfo)
 {
    return ( ExeGenerate( wstrztoA( wsCncFile), wstrztoA( wsInfo)) ? TRUE : FALSE) ;
 }
+
+//-----------------------------------------------------------------------------
+// Machine Calc
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtGetCalcTipFromPositions( double dX, double dY, double dZ, double dAngA, double dAngB,
+                                      BOOL bBottom, double ptTip[3])
+{
+   Point3d ptTmp ;
+   if ( ! ExeGetCalcTipFromPositions( dX, dY, dZ, dAngA, dAngB, ( bBottom != FALSE), ptTmp))
+      return FALSE ;
+  // ritorno i dati
+   if ( ptTip != nullptr)
+      VEC_FROM_3D( ptTip, ptTmp) ;
+   return TRUE ;
+}
diff --git a/EgtInterface.rc b/EgtInterface.rc
index a8b50bb..6222adc 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ