diff --git a/EgtMachKernel.rc b/EgtMachKernel.rc
index bce23c5..2743a0a 100644
Binary files a/EgtMachKernel.rc and b/EgtMachKernel.rc differ
diff --git a/MachineLua.cpp b/MachineLua.cpp
index d9dee90..6c2351f 100644
--- a/MachineLua.cpp
+++ b/MachineLua.cpp
@@ -589,7 +589,7 @@ Machine::LuaEmtStdHead( lua_State* L)
    double dRot1W = 1 ;
    LuaGetTabFieldParam( L, 1, FLD_ROT1W, dRot1W) ;
   // lettura eventuale campo 'Rot2Stroke' dalla tabella
-   STROKE Rot2Stroke = { -INFINITO, INFINITO} ;
+   STROKE Rot2Stroke{ -INFINITO, INFINITO} ;
    LuaGetTabFieldParam( L, 1, FLD_ROT2STROKE, Rot2Stroke.v) ;
   // lettura eventuale campo 'SolCh' dalla tabella
    int nSolCh = MCH_SCC_NONE ;
@@ -667,7 +667,7 @@ Machine::LuaEmtMultiHead( lua_State* L)
    double dRot1W = 1 ;
    LuaGetTabFieldParam( L, 1, FLD_ROT1W, dRot1W) ;
   // lettura eventuale campo 'Rot2Stroke' dalla tabella
-   STROKE Rot2Stroke = { -INFINITO, INFINITO} ;
+   STROKE Rot2Stroke{ -INFINITO, INFINITO} ;
    LuaGetTabFieldParam( L, 1, FLD_ROT2STROKE, Rot2Stroke.v) ;
   // lettura eventuale campo 'SolCh' dalla tabella
    int nSolCh = MCH_SCC_NONE ;
@@ -734,7 +734,7 @@ Machine::LuaEmtSpecialHead( lua_State* L)
    double dRot1W = 1 ;
    LuaGetTabFieldParam( L, 1, FLD_ROT1W, dRot1W) ;
   // lettura eventuale campo 'Rot2Stroke' dalla tabella
-   STROKE Rot2Stroke = { -INFINITO, INFINITO} ;
+   STROKE Rot2Stroke{ -INFINITO, INFINITO} ;
    LuaGetTabFieldParam( L, 1, FLD_ROT2STROKE, Rot2Stroke.v) ;
   // lettura eventuale campo 'SolCh' dalla tabella
    int nSolCh = MCH_SCC_NONE ;
diff --git a/Operation.cpp b/Operation.cpp
index 6909b38..aa0f140 100644
--- a/Operation.cpp
+++ b/Operation.cpp
@@ -754,11 +754,11 @@ Operation::AdjustCurveFromSurf( ICurveComposite* pCrvCompo, int nToolDir, int nF
          else
             break ;
       }
-     // elimino le curve estreme molto corte ( 0.1 mm)
+     // elimino le curve estreme molto corte ( 0.5 mm)
       const double REF_LEN = 10.0 ;
       double dLen ;
       if ( pCrvCompo->GetLength( dLen)  &&  dLen > REF_LEN) {
-         const double MIN_LEN = 0.1 ;
+         const double MIN_LEN = 0.5 ;
          double dCrvLen ;
          pCrv = pCrvCompo->GetFirstCurve() ;
          if ( pCrv != nullptr  &&  pCrv->GetLength( dCrvLen)  &&  dCrvLen < MIN_LEN)
diff --git a/SawRoughing.cpp b/SawRoughing.cpp
index a3f5d3c..8f16025 100644
--- a/SawRoughing.cpp
+++ b/SawRoughing.cpp
@@ -805,7 +805,7 @@ SawRoughing::VerifyGeometry( SelData Id, int& nSubs)
    const IGeoObj* pGObj = m_pGeomDB->GetGeoObj( Id.nId) ;
    // se direttamente la curva
    if ( Id.nSub == SEL_SUB_ALL) {
-      pCurve = ::GetCurve( m_pGeomDB->GetGeoObj( Id.nId)) ;
+      pCurve = ::GetCurve( pGObj) ;
       if ( pCurve != nullptr) {
          if ( pCurve->GetType() == CRV_COMPO)
             nSubs = ::GetCurveComposite( pCurve)->GetCurveCount() ;
@@ -815,7 +815,7 @@ SawRoughing::VerifyGeometry( SelData Id, int& nSubs)
    }
    // altrimenti sottocurva di composita
    else {
-      const ICurveComposite* pCompo = GetCurveComposite( m_pGeomDB->GetGeoObj( Id.nId)) ;
+      const ICurveComposite* pCompo = GetCurveComposite( pGObj) ;
       if ( pCompo != nullptr)
          pCurve = pCompo->GetCurve( Id.nSub) ;
       nSubs = 0 ;