diff --git a/EGkCurveAux.h b/EGkCurveAux.h
index d1136b5..6656e5e 100644
--- a/EGkCurveAux.h
+++ b/EGkCurveAux.h
@@ -152,6 +152,17 @@ EGK_EXPORT bool CalcCurveLimitOffset( const ICurve& crvC, double& dOffs) ;
 //! Calcola, se possibile, le curve di offset del valore richiesto come curve singole
 EGK_EXPORT bool CalcCurveSingleCurvesOffset( const ICurve& crvC, ICURVEPOVECTOR& vCrvs, double dOffs) ;
 
+//----------------------------------------------------------------------------
+//! Calcola, se possibile, le curve di offset dato un vettore di curve aperte/chiuse
+EGK_EXPORT bool CalcOffsetCurves( const ICURVEPVECTOR& vpCrvs, ICURVEPOVECTOR& vCrvs, double dOffs,
+                                  int nType = ICurve::OFF_FILLET) ;
+
+//----------------------------------------------------------------------------
+//! Calcola, se possibile, le fat curve di offset dato un vettore di curve aperte/chiuse
+EGK_EXPORT bool CalcFatOffsetCurves( const ICURVEPVECTOR& vpCrvs, ICURVEPOVECTOR& vCrvs, double dOffs,
+                                     bool bSquareEnds, bool bSquareMids,
+                                     bool bMergeOnlySameProps = true) ;
+
 //----------------------------------------------------------------------------
 //! Resetta l'oggetto voronoi associato alla curva liberandone la memoria
 EGK_EXPORT void ResetCurveVoronoi( const ICurve& crvC) ;
\ No newline at end of file
diff --git a/EMkMachiningConst.h b/EMkMachiningConst.h
index 8e4196f..6e484e5 100644
--- a/EMkMachiningConst.h
+++ b/EMkMachiningConst.h
@@ -397,7 +397,8 @@ enum { SURFFIN_SUB_ZIGZAG = 0,
        SURFFIN_SUB_SPIRALOUT = 3,
        SURFFIN_SUB_Z_CONST = 4,
        SURFFIN_SUB_OPTIMAL = 5,
-       SURFFIN_SUB_PROJECT = 6} ;
+       SURFFIN_SUB_PROJECT = 6,
+       SURFFIN_SUB_PENCIL = 7} ;
 // Tipo di attacco
 enum { SURFFIN_LI_NONE = 0,
        SURFFIN_LI_LINEAR = 1,