diff --git a/EExExport3MF.h b/EExExport3MF.h
new file mode 100644
index 0000000..cf12762
--- /dev/null
+++ b/EExExport3MF.h
@@ -0,0 +1,40 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2014-2014
+//----------------------------------------------------------------------------
+// File : EExExport3MF.h          Data : 01.09.21         Versione : 2.3i1
+// Contenuto : Dichiarazione della interfaccia IExport3MF.
+//
+//
+//
+// Modifiche : 07.08.14 DS Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+#pragma once
+
+#include "/EgtDev/Include/EgkGeomDB.h"
+#include "/EgtDev/Include/EExExportConst.h"
+#include <string>
+
+//----------------------- Macro per import/export ----------------------------
+#undef EEK_EXPORT
+#if defined( I_AM_EEX)            // da definirsi solo nella DLL
+#define EEX_EXPORT __declspec( dllexport)
+#else
+#define EEX_EXPORT __declspec( dllimport)
+#endif
+
+//-----------------------------------------------------------------------------
+class __declspec( novtable) IExport3MF
+{
+public :
+   virtual ~IExport3MF( void) {}
+   virtual bool SetOptions( int nFilter) = 0 ;
+   virtual bool Export( IGeomDB* pGDB, int nId, const std::string& sFile) = 0 ;
+} ;
+
+//-----------------------------------------------------------------------------
+extern "C" {
+   EEX_EXPORT IExport3MF* CreateExport3MF(void) ;
+}
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