diff --git a/EgtExchange.rc b/EgtExchange.rc
index 312c6f6..8e1f662 100644
Binary files a/EgtExchange.rc and b/EgtExchange.rc differ
diff --git a/Export3MF.cpp b/Export3MF.cpp
index cfa8705..9981db7 100644
--- a/Export3MF.cpp
+++ b/Export3MF.cpp
@@ -82,7 +82,6 @@ Export3MF::Export( IGeomDB* pGDB, int nId, const string& sFile)
       return false ;   
    }  
 
-
   // creo un iteratore
    PtrOwner<IGdbIterator> pIter( CreateGdbIterator( pGDB)) ;
    if ( IsNull( pIter))
@@ -119,7 +118,7 @@ Export3MF::ExportObject( const IGdbIterator& iIter)
          if ( pGeoObj == nullptr)
             return true ;
         // se non è una superficie esco
-         if ( pGeoObj->GetType() != SRF_TRIMESH && pGeoObj->GetType() != SRF_FLATRGN)
+         if ( pGeoObj->GetType() != SRF_TRIMESH  &&  pGeoObj->GetType() != SRF_FLATRGN)
             return true ;
         // recupero il riferimento globale dell'oggetto
          Frame3d frFrame ;
@@ -225,16 +224,17 @@ Export3MF::ExportSTM( const std::string& sName, const IGeoObj* pGeoObj, const Fr
    int k = 0 ;
    for ( int i = 0 ; i < pSTM->GetTriangleSize() ; i++) {
       int nIdVert[3] ;
+     // se il triangolo non è valido passo al successivo
       if ( ! pSTM->GetTriangle( i, nIdVert))    
-         continue ;   // se il triangolo non è valido passo al successivo
-
+         continue ;
+     // assegno gli indici dei vertici
       vTriangles[k].m_Indices[0] = nIdVert[0] ;
       vTriangles[k].m_Indices[1] = nIdVert[1] ;
       vTriangles[k].m_Indices[2] = nIdVert[2] ; 
       k ++ ;
    }
 
-   if ( vVertices.size() == 0 || vTriangles.size() == 0) {
+   if ( vVertices.size() == 0  ||  vTriangles.size() == 0) {
       LOG_ERROR( GetEExLogger(), ("Export3MF : surface \"" + sName + "\" is empty. Ignored.").c_str()) ;
       return true ; 
    }
diff --git a/Import3MF.cpp b/Import3MF.cpp
index 6bde460..246f39f 100644
--- a/Import3MF.cpp
+++ b/Import3MF.cpp
@@ -222,6 +222,86 @@ Import3MF::ReadObject( const PObject pObj, ATTRVECTOR& vAttr, sTransform& sTrans
 bool 
 Import3MF::ReadMesh( const Lib3MF_uint32& nId, ATTRVECTOR& vAttr, sTransform& sTransf)
 {
+  // Recupero puntatore alla mesh 3MF
+   PMeshObject pMesh = m_model->GetMeshObjectByID( nId) ;
+   if ( pMesh.get() == nullptr)
+      return false ;
+
+  // Creo e inizializzo trimesh
+   PtrOwner<ISurfTriMesh> pStm( CreateSurfTriMesh()) ;
+   if ( IsNull( pStm)  ||  ! pStm->Init( 3, 1)) {
+      LOG_ERROR( GetEExLogger(), "  Error reading 3MF mesh : ISurfTriMesh Create error") ;
+      return false ;
+   }
+   pStm->SetLinearTolerance( 10 * EPS_SMALL) ;
+
+  // Ciclo sui vertici della mesh 3MF
+   for ( Lib3MF_uint32 i = 0 ; i < pMesh->GetVertexCount() ; i ++) {
+     // recupero le coordinate del vertice
+      sPosition pVertex = pMesh->GetVertex( i) ;
+     // applico la trasformazione
+      double x = 0.0, y = 0.0, z = 0.0 ;
+      for ( int k = 0 ; k < 3 ; k ++) {
+         x += pVertex.m_Coordinates[k] * sTransf.m_Fields[k][0] ;
+         y += pVertex.m_Coordinates[k] * sTransf.m_Fields[k][1] ;
+         z += pVertex.m_Coordinates[k] * sTransf.m_Fields[k][2] ;      
+      }
+      x += sTransf.m_Fields[3][0] ;
+      y += sTransf.m_Fields[3][1] ;
+      z += sTransf.m_Fields[3][2] ;
+     // inserisco il vertice nella trimesh
+      if ( pStm->AddVertex( Point3d( x, y, z)) == SVT_NULL) {
+         LOG_ERROR( GetEExLogger(), "  Error reading 3MF mesh : ISurfTriMesh AddVertex error") ;
+         return false ;       
+      }
+   }
+
+  // Ciclo sui triangoli della mesh 3MF
+   for ( Lib3MF_uint32 i = 0 ; i < pMesh->GetTriangleCount() ; i ++) {
+     // recupero gli indici dei vertici del triangolo
+      sTriangle tTrg = pMesh->GetTriangle( i) ;
+      int nIdV[3] = { int( tTrg.m_Indices[0]), int( tTrg.m_Indices[1]), int( tTrg.m_Indices[2])} ;
+     // se i vertici sono tutti diversi tra loro, inserisco il triangolo
+      if ( nIdV[0] != nIdV[1]  &&  nIdV[0] != nIdV[2]  &&  nIdV[1] != nIdV[2]) {
+         if ( pStm->AddTriangle( nIdV) == SVT_NULL) {
+            LOG_ERROR( GetEExLogger(), "  Error reading 3MF mesh : ISurfTriMesh AddTriangle error") ;
+            return false ; 
+         }
+      }
+   }
+
+  // Aggiustamenti finali
+   if ( ! pStm->AdjustTopology()) {
+      LOG_ERROR( GetEExLogger(), "  Error reading 3MF mesh : ISurfTriMesh AdjustTopology error") ;
+      return false ;
+   }
+  
+  // Inserimento nel DB geometrico
+   int nGeoId = m_pGDB->AddGeoObj( GDB_ID_NULL, m_nIdGroup, Release( pStm)) ; 
+   if ( nGeoId == GDB_ID_NULL) {
+      LOG_ERROR( GetEExLogger(), "  Error reading 3MF mesh : error adding GeoObject") ;
+      return false ;
+   }
+  
+  // colore
+   Lib3MF_uint32 pid, pindex ;
+   if ( pMesh->GetObjectLevelProperty( pid, pindex)) {
+      Color cCol ;
+      if ( FindColor( pid, pindex, cCol))
+         m_pGDB->SetMaterial( nGeoId, cCol) ;  
+   }
+  
+  // attributes
+   for ( size_t i = 0 ; i < vAttr.size() ; i++) {
+      if ( vAttr[i].first == "name")     
+         m_pGDB->SetName( nGeoId, vAttr[i].second) ;
+      else
+         m_pGDB->SetInfo( nGeoId, vAttr[i].first, vAttr[i].second) ;    
+   }
+
+   return true ;
+
+#if 0
    PMeshObject pMesh = m_model->GetMeshObjectByID( nId) ;
    
    StmFromTriangleSoup Stm ;
@@ -292,6 +372,7 @@ Import3MF::ReadMesh( const Lib3MF_uint32& nId, ATTRVECTOR& vAttr, sTransform& sT
    }
 
    return true ;
+#endif
 }
 
 //-----------------------------------------------------------------------------------