diff --git a/DllExchange.cpp b/DllExchange.cpp
index 662cb30..e4ebf1f 100644
--- a/DllExchange.cpp
+++ b/DllExchange.cpp
@@ -52,6 +52,7 @@ static const char* EEX_CREATEIMPORT3MF = "CreateImport3MF" ;
 static const char* EEX_CREATEEXPORTDXF = "CreateExportDxf" ;
 static const char* EEX_CREATEEXPORTSTL = "CreateExportStl" ;
 static const char* EEX_CREATEEXPORT3MF = "CreateExport3MF" ;
+static const char* EEX_CREATEEXPORTTHREEJS = "CreateExportThreeJS" ;
 static const char* EEX_CREATEEXPORTSVG = "CreateExportSvg" ;
 static const char* EEX_CREATEEEXEXECUTOR = "CreateExcExecutor" ;
 
@@ -359,6 +360,21 @@ MyCreateExport3MF( void)
    return pFun() ;
 }
 
+//-----------------------------------------------------------------------------
+IExportThreeJS*
+MyCreateExportThreeJS( void)
+{
+   // verifico caricamento libreria EgtExchange
+   if ( s_hEEx == nullptr)
+      return nullptr ;
+   // recupero funzione creazione oggetto
+   typedef IExportThreeJS* (* PF_CreateExportThreeJS) ( void) ;
+   PF_CreateExportThreeJS pFun = (PF_CreateExportThreeJS)GetProcAddress( s_hEEx, EEX_CREATEEXPORTTHREEJS) ;
+   if ( pFun == nullptr)
+      return nullptr ;
+   return pFun() ;
+}
+
 //-----------------------------------------------------------------------------
 IExportSvg*
 MyCreateExportSvg( void)
diff --git a/DllExchange.h b/DllExchange.h
index 3c87070..aaf27ac 100644
--- a/DllExchange.h
+++ b/DllExchange.h
@@ -28,6 +28,7 @@ class IImport3MF ;
 class IExportDxf ;
 class IExportStl ;
 class IExport3MF ;
+class IExportThreeJS ;
 class IExportSvg ;
 class IExcExecutor ;
 
@@ -52,5 +53,6 @@ IImport3MF* MyCreateImport3MF( void) ;
 IExportDxf* MyCreateExportDxf( void) ;
 IExportStl* MyCreateExportStl( void) ;
 IExport3MF* MyCreateExport3MF( void) ;
+IExportThreeJS* MyCreateExportThreeJS( void) ;
 IExportSvg* MyCreateExportSvg( void) ;
 IExcExecutor* MyCreateExcExecutor(void) ;
diff --git a/EXE_Exchange.cpp b/EXE_Exchange.cpp
index 9332109..8a96040 100644
--- a/EXE_Exchange.cpp
+++ b/EXE_Exchange.cpp
@@ -23,6 +23,7 @@
 #include "/EgtDev/Include/EExImportDxf.h"
 #include "/EgtDev/Include/EExImportStl.h"
 #include "/EgtDev/Include/EExImport3MF.h"
+#include "/EgtDev/Include/EExExportThreeJS.h"
 #include "/EgtDev/Include/EExImportCnc.h"
 #include "/EgtDev/Include/EExImportCsf.h"
 #include "/EgtDev/Include/EExImportPnt.h"
@@ -38,6 +39,7 @@
 #include "/EgtDev/Include/EgtPointerOwner.h"
 #include "/EgtDev/Include/EgtKeyCodes.h"
 #include "/EgtDev/Include/SELkKeyProc.h"
+#include "/EgtDev/Include/EGrScene.h"
 
 using namespace std ;
 
@@ -554,3 +556,29 @@ ExeExportSvg( int nId, const string& sFilePath, int nFilter)
   // restituisco il risultato
    return bOk ;
 }
+
+//-----------------------------------------------------------------------------
+bool
+ExeExportThreeJS( int nId, const string& sFilePath, const string& sFilePathM)
+{
+   IEGrScene* pScene = GetCurrScene();
+   VERIFY_SCENE(pScene, false) ;
+   IGeomDB* pGeomDB = GetCurrGeomDB() ;
+   VERIFY_GEOMDB( pGeomDB, false)
+   bool bOk = true ;
+  // esporto il file per ThreeJS
+  // preparo l'esportatore
+   PtrOwner<IExportThreeJS> pExpThreeJS( MyCreateExportThreeJS()) ;
+   bOk = bOk && ! IsNull( pExpThreeJS) ;
+   // eseguo l'esportazione
+   bOk = bOk && pExpThreeJS->Export( pGeomDB, nId, sFilePath, sFilePathM, pScene) ;
+   // se richiesto, salvo il comando Lua equivalente
+   if ( IsCmdLog()) {
+      string sLua = "EgtExportThreeJS(" + ToString( nId) + ",'" +
+         StringToLuaString( sFilePath) + "')" +
+         " -- Ok=" + ToString( bOk) ;
+      LOG_INFO( GetCmdLogger(), sLua.c_str()) ;
+   }
+   // restituisco il risultato
+   return bOk ;
+}
diff --git a/LUA_Exchange.cpp b/LUA_Exchange.cpp
index 50d83a1..70498b1 100644
--- a/LUA_Exchange.cpp
+++ b/LUA_Exchange.cpp
@@ -224,6 +224,25 @@ LuaExport3MF( lua_State* L)
    return 1 ;
 }
 
+//-------------------------------------------------------------------------------
+static int
+LuaExportThreeJS( lua_State* L)
+{
+   // 2 parametri, GroupId e path del file da esportare
+   int nGroupId ;
+   LuaCheckParam( L, 1, nGroupId)
+   string sFilePath ;
+   LuaCheckParam( L, 2, sFilePath)
+   string sFilePathM;
+   LuaCheckParam(L, 3, sFilePathM)
+   LuaClearStack( L) ;
+   // creo il file
+   bool bOk = ExeExportThreeJS( nGroupId, sFilePath, sFilePathM) ;
+   // restituisco il risultato
+   LuaSetParam( L, bOk) ;
+   return 1 ;
+}
+
 //-------------------------------------------------------------------------------
 static int
 LuaExportSvg( lua_State* L)
@@ -260,6 +279,7 @@ LuaInstallExchange( LuaMgr& luaMgr)
    bOk = bOk && luaMgr.RegisterFunction( "EgtExportDxf", LuaExportDxf) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtExportStl", LuaExportStl) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtExport3MF", LuaExport3MF) ;
+   bOk = bOk && luaMgr.RegisterFunction( "EgtExportThreeJS", LuaExportThreeJS) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtExportSvg", LuaExportSvg) ;
    return bOk ;
 }