diff --git a/EMkMachiningConst.h b/EMkMachiningConst.h
index 3bcd68e..5d70b5b 100644
--- a/EMkMachiningConst.h
+++ b/EMkMachiningConst.h
@@ -352,6 +352,12 @@ enum { MORTISE_FU_NONE = 0,
        MORTISE_FU_PARAL_BACK = 4,
        MORTISE_FU_PARAL_LEFT = 5,
        MORTISE_FU_PARAL_RIGHT = 6} ;
+// Tipo di affondamento (plunge)
+enum { MORTISE_PLUNGE_STEP = 0,
+       MORTISE_PLUNGE_START = 1,
+       MORTISE_PLUNGE_END = 2,
+       MORTISE_PLUNGE_START_END = 3,
+       MORTISE_PLUNGE_START_TO_END = 4} ;
 
 //----------------------------------------------------------------------------
 // Parametri per finitura superfici
diff --git a/EgtNumUtils.h b/EgtNumUtils.h
index ab5ec75..7b229d5 100644
--- a/EgtNumUtils.h
+++ b/EgtNumUtils.h
@@ -17,14 +17,14 @@
 inline
 int Clamp( int nVal, int nMin, int nMax)
 {
-   return ( nVal <= nMin ? nMin : nVal >= nMax ? nMax : nVal) ;
+   return ( nVal < nMin ? nMin : nMax < nVal ? nMax : nVal) ;
 }
 
 //----------------------------------------------------------------------------
 inline
 double Clamp( double dVal, double dMin, double dMax)
 {
-   return ( dVal <= dMin ? dMin : dVal >= dMax ? dMax : dVal) ;
+   return ( dVal < dMin ? dMin : dMax < dVal ? dMax : dVal) ;
 }
 
 //----------------------------------------------------------------------------