diff --git a/EXE_GdbCreateSurf.cpp b/EXE_GdbCreateSurf.cpp
index a8fc384..8993009 100644
--- a/EXE_GdbCreateSurf.cpp
+++ b/EXE_GdbCreateSurf.cpp
@@ -1288,6 +1288,43 @@ ExeCreateSurfTmSwept( int nParentId, int nSectId, int nGuideId, bool bCapEnds, d
    return nNewId ;
 }
 
+//-------------------------------------------------------------------------------
+int
+ExeCreateSurfTmTransSwept( int nParentId, int nSectId, int nGuideId, bool bCapEnds, double dLinTol)
+{
+   IGeomDB* pGeomDB = GetCurrGeomDB() ;
+   VERIFY_GEOMDB( pGeomDB, GDB_ID_NULL)
+   nParentId = AdjustId( nParentId) ;
+   bool bOk = true ;
+  // recupero il riferimento locale
+   Frame3d frLoc ;
+   bOk = bOk && pGeomDB->GetGroupGlobFrame( nParentId, frLoc) ;
+  // recupero la sezione in locale
+   CurveLocal CrvSect( pGeomDB, nSectId, frLoc) ;
+   bOk = bOk && ( CrvSect.Get() != nullptr) ;
+  // recupero la guida in locale
+   CurveLocal CrvGuide( pGeomDB, nGuideId, frLoc) ;
+   bOk = bOk && ( CrvGuide.Get() != nullptr) ;
+  // creo la superficie trimesh
+   ISurfTriMesh* pSTM = nullptr ;
+   pSTM = ( bOk ? GetSurfTriMeshTransSwept( CrvSect, CrvGuide, bCapEnds, dLinTol) : nullptr) ;
+  // inserisco la superficie trimesh nel DB
+   int nNewId = ( bOk ? pGeomDB->AddGeoObj( GDB_ID_NULL, nParentId, pSTM) : GDB_ID_NULL) ;
+   ExeSetModified() ;
+  // se richiesto, salvo il comando Lua equivalente
+   if ( IsCmdLog()) {
+      string sLua = "EgtSurfTmTransSwept(" + IdToString( nParentId) + "," +
+                                             ToString( nSectId) + "," +
+                                             ToString( nGuideId) + "," +
+                                             ( bCapEnds ? "true" : "false") + "," +
+                                             ToString( dLinTol) + ")" +
+                    " -- Id=" + ToString( nNewId) ;
+      LOG_INFO( GetCmdLogger(), sLua.c_str()) ;
+   }
+  // restituisco l'identificativo della nuova entità
+   return nNewId ;
+}
+
 //-------------------------------------------------------------------------------
 int
 ExeCreateSurfTmRuled( int nParentId, int nPtOrCrvId1, int nPtOrCrvId2, int nType, double dLinTol)
diff --git a/LUA_GdbCreateSurf.cpp b/LUA_GdbCreateSurf.cpp
index d703099..f0c8cbc 100644
--- a/LUA_GdbCreateSurf.cpp
+++ b/LUA_GdbCreateSurf.cpp
@@ -682,6 +682,32 @@ LuaCreateSurfTmSwept( lua_State* L)
    return 1 ;
 }
 
+//-------------------------------------------------------------------------------
+static int
+LuaCreateSurfTmTransSwept( lua_State* L)
+{
+  // 4 o 5 parametri : ParentId, SectId, GuideId, bCapEnds [, dTol]
+   int nParentId ;
+   LuaCheckParam( L, 1, nParentId)
+   int nSectId ;
+   LuaCheckParam( L, 2, nSectId)
+   int nGuideId ;
+   LuaCheckParam( L, 3, nGuideId)
+   bool bCapEnds ;
+   LuaCheckParam( L, 4, bCapEnds)
+   double dLinTol = LIN_TOL_SRF ;
+   LuaGetParam( L, 5, dLinTol) ;
+   LuaClearStack( L) ;
+  // creo STM swept di traslazione
+   int nId = ExeCreateSurfTmTransSwept( nParentId, nSectId, nGuideId, bCapEnds, dLinTol) ;
+  // restituisco il risultato
+   if ( nId != GDB_ID_NULL)
+      LuaSetParam( L, nId) ;
+   else
+      LuaSetParam( L) ;
+   return 1 ;
+}
+
 //-------------------------------------------------------------------------------
 static int
 LuaCreateSurfTmRuled( lua_State* L)
@@ -993,6 +1019,7 @@ LuaInstallGdbCreateSurf( LuaMgr& luaMgr)
    bOk = bOk && luaMgr.RegisterFunction( "EgtSurfTmByScrewing", LuaCreateSurfTmByScrewing) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtSurfTmRectSwept", LuaCreateSurfTmRectSwept) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtSurfTmSwept", LuaCreateSurfTmSwept) ;
+   bOk = bOk && luaMgr.RegisterFunction( "EgtSurfTmTransSwept", LuaCreateSurfTmTransSwept) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtSurfTmRuled", LuaCreateSurfTmRuled) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtSurfTmByTriangles", LuaCreateSurfTmByTriangles) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtSurfTmBySewing", LuaCreateSurfTmBySewing) ;