diff --git a/EgtGeomKernel.rc b/EgtGeomKernel.rc
index ef2331e..4e0b457 100644
Binary files a/EgtGeomKernel.rc and b/EgtGeomKernel.rc differ
diff --git a/OffsetCurve.cpp b/OffsetCurve.cpp
index 53f618c..470207f 100644
--- a/OffsetCurve.cpp
+++ b/OffsetCurve.cpp
@@ -68,6 +68,9 @@ OffsetCurve::Make( const ICurve* pCrv, double dDist, int nType)
    }
    else
       vtExtr = plPlane.vtN ;
+  // recupero spessore
+   double dThick ;
+   pCrv->GetThickness( dThick) ;
 
   // determino se necessario cambiare riferimento ( dal vettore estrusione)
    bool bNeedRef = ( ! vtExtr.IsZplus()) ;
@@ -440,6 +443,12 @@ OffsetCurve::Make( const ICurve* pCrv, double dDist, int nType)
          pCrv->ToGlob( frExtr) ;
    }
 
+  // assegno estrusione e spessore come curva originale
+   for ( auto pCrv : m_CrvLst) {
+      pCrv->SetExtrusion( vtExtr) ;
+      pCrv->SetThickness( dThick) ;
+   }
+
    return true ;
 }