diff --git a/Milling.cpp b/Milling.cpp
index 866cac5..9ab179d 100644
--- a/Milling.cpp
+++ b/Milling.cpp
@@ -5017,7 +5017,8 @@ Milling::GetPointOutOfRaw( const Point3d& ptP, const Vector3d& vtTool, double dE
       double dTemp ;
       Vector3d vtMove = ( m_bAboveHead ? Z_AX : -Z_AX) ;
       Vector3d vtSafe = vtTool ; vtSafe.z = 0 ; vtSafe.Normalize() ;
-      Point3d ptQ = ptP - vtSafe * 0.5 * dSafeZ ;
+      const double MIN_SAFEDIST = 5.0 ;
+      Point3d ptQ = ptP - vtSafe * max( 0.2 * dSafeZ, MIN_SAFEDIST) ;
       if ( ! GetElevation( m_nPhase, ptQ, vtTool, 0.5 * m_TParams.m_dDiam, vtMove, dTemp)  ||  dTemp > 10 * EPS_SMALL)
          return false ;
       Point3d ptR = ptP + vtTool * m_TParams.m_dThick ;